Subject Guide


SubjectCategorySearch


 
Elemental Data Index
physics.nist.gov/PhysRefData/Elements/cover.html [HTML/Javascript]
Description: The Elemental Data Index provides access to the holdings of NIST Physics Laboratory online data organized by element. It is intended to simplify the process of retrieving online scientific data for a specific element. Also you will find here the entry point to all NIST Physics Laboratory databases.
Author: Zucker, M.A.; Kishore, A.R.; Dragoset, R.A.
Publisher: National Institute of Standards and Technology
Classification: PACS2003 30. Atomic and Molecular Physics
PACS2003 20. Nuclear Physics
PACS2003 70. Condensed Matter Electronic Structure, Electrical, Magnetic, and Optical Properties
Category: Scientific and Technical Data
Language: English
Is Part Of: physics.nist.gov
Access Rights: free
Date: 2005-07-28



More Sources:

A Database for Atoms, Molecules, Gases and Plasmas
gaphyor.lpgp.u-psud.fr/gaphyor/index.html [HTML]
GAPHYOR (GAz-PHYsics-ORsay) Data Center, located in Orsay at the Laboratoire de Physique des Gaz et des Plasmas LPGP, produces a database on properties of atoms, molecules and neutral or ionized gases, including chemical reactions. Five domains of physics, chemical physics and plasma physics are dealt with: properties of isolated atoms and molecules, collisions with photons, collisions with electrons, collisions and reactions between atoms and molecules, and macroscopic properties of gases. The database is based on a large coverage of the specialized literature in the fields of atomic and molecular physics, chemical physics and plasma physics.Data include bibliographical, factual and numerical information. more info
ADAS : Atomic Data and Analysis Structure
www.adas.ac.uk [HTML, PDF, C-Source, Fortran]
The Atomic Data and Analysis Structure (ADAS) is an interconnected set of computer codes and data collections for modelling the radiating properties of ions and atoms in plasmas. It can address plasmas ranging from the interstellar medium through the solar atmosphere and laboratory thermonuclear fusion devices to technological plasmas. ADAS assists in the analysis and interpretation of spectral emission and supports detailed plasma models. ADAS data and ADAS-generated data are incorporated in many plasma modelling codes such as B2-IRENE, CHEAP, DIVIMP, EDGE2D, SANCO and STRAHL and analyses such as differential emission measure. more info
Aladdin
www-amdis.iaea.org/ALADDIN [HTML/Javascript, PDF]
The Aladdin site contains numerical databases of recommended and evaluated atomic, molecular and plasma-surface interaction data for fusion research with an interface for online interactive access. It allows calculation for specific problems and their display in various plot formats. It includes atomic and molecular data concerning particle collisions and photon interactions as well as databases dealing with particle surface interactions. ALADDIN, A Labelled Atomic Data Interface, is a data format developed in order to provide a standard and flexible method for the exchange and management of atomic, molecular, and plasma-surface interaction and material properties data of interest to fusion research. more info
American Mineralogist Crystal Structure Database
www.geo.arizona.edu/AMS [HTML/Javascript]
This site presents an search interface to the American Mineralogist Crystal Structure Database, a crystal structure database that includes every structure published in the American Mineralogist, The Canadian Mineralogist, and the European Journal of Mineralogy. more info
Atomic Reference Data for Electronic Structure Calculations
physics.nist.gov/PhysRefData/DFTdata/contents.html [HTML]
This database provided by the National Institute of Standards and Technology (NIST) contains total energies and orbital eigenvalues for the atoms hydrogen through uranium, as computed in several standard variants of density-functional theory. Data have been generated for atomic electronic structure calculations, to provide a standard reference for results of specified accuracy under commonly used approximations. more info
Atomic Weights and Isotopic Compositions
physics.nist.gov/PhysRefData/Compositions/index.html [HTML/Javascript]
This page provided by the National Institute of Standards and Technology (NIST) lists atomic weights and isotopic compositions with relative atomic masses. The atomic weights are available for elements 1 through 112, 114, and 116 and isotopic compositions or abundances are given when appropriate. more info
Bilbao Crystallographic Server
www.cryst.ehu.es [HTML]
The Bilbao Crystallographic Server provides crystallographic programs and databases accessible via Internet, which are created at the University of Basque Country, Spain. An extensive collection of programs, calculators and databases on different subfields of crystallography is here to be found, such as solid state applications, space group representations, group-subgroup relations, or incommensurate structures. The programs available on the server do not need a local installation and can be used free of charge. more info
Cambridge Crystallographic Data Centre : CCDC
www.ccdc.cam.ac.uk [HTML/Javascript]
The CCDC is producer of the Cambridge Structural Database (CSD) which records bibliographic, chemical and crystallographic information for organic molecules and metal-organic compounds whose 3D structures have been determined using X-ray diffraction and neutron diffraction. The Cambridge Structural Database (CSD) is distributed as part of the CSD System. Access has to be licensed. The CCDC site provides some free services such as enCIFer, a CIF checking, editing and visualisation software or CSDSymmetry, a collation of observed molecular and crystallographic symmetry properties. Free CIFs from the CCDC Supplementary Data Archive may be requested. more info
Chart of Nuclides
www.nndc.bnl.gov/chart [HTML/Javascript]
This interactive chart of nuclides provided by the National Nuclear Data Center NNDC allows to search and plot nuclear structure and nuclear decay data. Data include nuclear level properties (energy, half-life, spin-parity), gamma-ray information (energy, intensity, multipolarity, coincidences), radiation information following nuclear decay (energy, intensity, dose), and neutron-induced reaction data from the BNL-325 book (thermal cross section and resonance integral). The information provided by the Chart of Nuclides can be seen in tables, level schemes and an interactive chart of nuclides. more info
CNS Data Analysis Center
gwdac.phys.gwu.edu [HTML/Javascript]
This site introduces to SAID, a partial-wave analysis facility. more info
Computer Index of Nuclear Reaction Data : CINDA
www.nndc.bnl.gov/exfor1/cinda.htm [HTML/Javascript]
CINDA, the Computer Index of Nuclear Reaction Data, contains bibliographic references to measurements, calculations, reviews, and evaluations of neutron cross-sections and other microscopic neutron data; it also includes index references to computer libraries of numerical neutron data available from four regional neutron data centers:The USA National Nuclear Data Center at Brookhaven National Laboratory; the Russian Nuclear Data Center at the Fiziko-Energeticheskij Institut, Obninsk, Russia; the NEA Data Bank at Paris, France; the IAEA Nuclear Data Section at Vienna, Austria.Since 2005, database is extended by photonuclear and charged particle reaction data. more info
Crystal Lattice Structures
cst-www.nrl.navy.mil/lattice/index.html [HTML]
This web page offers a concise index of common crystal lattice structures. Graphical representations as well as useful information about the lattices are provided. It aims at visualizing the crystal lattice structures. The structures are described by prototype, Pearson symbol, Strukturbericht designation, and space group. more info
Crystallography Open Database : COD
www.crystallography.net [HTML/Javascript]
The Crystallography Open Database aims at providing an open access to crystallographic data both already published and still unpublished.Thus, it presents a keyword-searchable database of structure data such as atomic coordinates and includes bibliographic references. more info
Electron-Impact Cross Sections for Ionization and Excitation Database
physics.nist.gov/PhysRefData/Ionization/Xsection.html [HTML, HTML/Javascript, GIF]
The Electron-Impact Cross Sections for Ionization and Excitation database provided by the National Institute of Standards and Technology (NIST) is a database primarily of total ionization cross sections of molecules by electron impact. The database also includes cross sections for some atoms and energy distributions of ejected electrons for H, He, and H2. The cross sections were calculated using the Binary-Encounter-Bethe (BEB) model, which combines the Mott cross section with the high-incident energy behavior of the Bethe cross section. Selected experimental data are included. Electron-impact excitation cross sections are also included for some selected atoms. more info
Evaluated Nuclear Data File ENDF
www.nndc.bnl.gov/exfor1/endf00.htm [HTML/Javascript]
This page enables users to search a core nuclear reaction database containing evaluated (recommended) cross sections, spectra, angular distributions, fission product yields, photo-atomic and thermal scattering law data, with emphasis on neutron induced reactions. The data were analyzed by experienced nuclear physicists to produce recommended libraries for one of the national (USA, European, Japanese, Russian and Chinese) nuclear data projects. All data are stored in the internationally adopted format (ENDF-6) maintained by CSEWG. more info
Evaluated Nuclear Structure Data File ENSDF and Experimental Unevaluated Nuclear Data List XUNDL
www.nndc.bnl.gov/ensdf [HTML]
This website created and maintained by the National Nuclear Data Center offers access to the ENSDF and XUNDL databases. ENSDF contains evaluated nuclear structure and decay information for nuclides, while XUNDL provides experimental data compiled from recent nuclear structure papers. Searching within the databases can be done by nuclide, reaction, or decay. Datasets also can be browsed by element and mass. more info
FFAST : X-Ray Form Factor, Attenuation, and Scattering Tables
physics.nist.gov/PhysRefData/FFast/Text/cover.html [HTML, GIF]
This datbase provided by the National Institute of Standards and Technology (NIST) includes detailed tabulation of atomic form factors, photoelectric absorption and scattering cross section, and mass attenuation coefficients for Z = 1-92 from E = 1-10 eV to E = 0.4-1.0 MeV. more info
GENIE : A General Internet Search Engine for Atomic Data
www-amdis.iaea.org/GENIE [HTML/Javascript]
GENIE allows a multiple search on different databases on the web for spectral and collisional atomic data for fusion and atomic physics research. more info
HEPDATA : Reaction Data Database
www-spires.dur.ac.uk/hepdata/reac.html [HTML]
The HEPDATA Reaction Data Database is containing numerical values of HEP reaction data such as total and differential cross sections, fragmentation functions, structure functions, and polarisation measurements, from a wide range of experiments. It is compiled by the Durham Database Group (UK) with help from the COMPAS group (Russia), and is updated at regular intervals. more info
IAEA Nuclear Data Services
www-nds.iaea.org [HTML/Javascript]
The Nuclear Data Services site organised by IAEA`s Nuclear Data Section provides collections of atomic and nuclear data for nuclear applications. This site brings together databases from the US National Nuclear Data Center NNDC as well as databases from IAEA. more info
MAID
www.kph.uni-mainz.de/MAID [HTML]
This site provides a set of calculators for photo- and electroproduction of pions, etas and kaons on the nucleon. more info
Martindale´s Calculators On-Line Center : Physics Center
www.martindalecenter.com/Calculators3A.html [HTML]
This complex site contains a very extensive collection of physics resources covering a broad spectrum of physics topics with a special focus on resources providing scientific and technical data or educational material. more info
Material Data Network : matdata.net
www.matdata.net [HTML]
The material search engine provided by matdata.net focuses on information relating to the professional application of materials and processes. Highest quality information sources are included, such as ASM International, and National Physical Laboratory (UK). For some sources users need subscriptions to access data that have been found by the search engine. more info
MatWeb : Material Property Data
www.matweb.com [HTML/Javascript]
MatWeb provides a searchable database of material data sheets. The database includes property information on thermoplastic and thermoset polymers such as ABS, nylon, polycarbonate, polyester, polyethylene and polypropylene; metals such as aluminum, cobalt, copper, lead, magnesium, nickel, steel, superalloys, titanium and zinc alloys; ceramics; plus semiconductors, fibers, and other engineering materials. more info
Mineralogy Database
www.webmineral.com [HTML/Javascript, Java-Applet]
Mineral data included in the Mineralogy Database may be accessed by several aspects such as crystallography, X-Ray powder diffraction, chemical composition, or properties. more info
Molecular Microwave Spectral Databases
www.nist.gov/pml/data/molspec.cfm [HTML/Javascript]
These three databases of diatomic, triatomic, and hydrocarbon molecules provided by the National Institute of Standards and Technology (NIST) were originally published as spectral tables in the Journal of Physical and Chemical Reference Data. Each of the databases covers primarily the microwave region with some data available for the radio frequency region. Rotational spectral lines have been tabulated. The isotopic molecular species, assigned quantum numbers, observed frequency, estimated measurement uncertainty, and reference are given for each transition reported. The derived molecular properties, such as rotational and centrifugal distortion constants, hyperfine structure constants, electric dipole moments, rotational g-factors and internuclear distances (for diatomic molecules) are listed with one standard deviation uncertainties for all species. In addition to the interface for each molecule, this online version of these three databases contains a multiple-molecule, frequency-searchable interface for the diatomic, triatomic, and hydrocarbon molecules and an updated, searchable reference database. more info
Nanoparticle Information Library : NIL
nanoparticlelibrary.net/index.asp [HTML/Javascript]
The National Institute for Occupational Safety and Health NIOSH is working with its national and international partners to develop a web-based Nanoparticle Information Library (NIL). The goal of the NIL is to help occupational health professionals, industrial users, worker groups, and researchers organize and share information on nanomaterials, including their health and safety-associated properties. The Nanoparticle Information Library provides an online database including information on nanomaterial composition, method of production, particle size, surface area, and morphology, applications, and availability of the nanomaterial as well as relevant publications. Database entries include safety and health information. more info
National Nuclear Data Center
www.nndc.bnl.gov [HTML/Javascript]
The National Nuclear Data Center NNDC collects, evaluates, and dissiminates nuclear physics data for basic nuclear research and applied nuclear technologies. The NNDC is a worldwide resource for nuclear data and includes nuclear structure, decay and reaction data, as well as literature information. more info
National Physical Laboratory : Publications
www.npl.co.uk/publications [HTML/Javascript]
The National Physical Laboratory is the UK`s national standards laboratory. The main focus of the work in the NPL Materials Centre is associated with developing test methods and materials measurement. NPL produces a range of publications for every technical level, and across a wide range of technical and sectoral topics. Some of our most popular publications types are highlighted on this page, but users are free to search the full publications database. more info
NIST Atomic Spectra Database
physics.nist.gov/PhysRefData/ASD/index.html [HTML/Javascript, PDF, Java-Applet]
This database provides access and search capability for NIST critically evaluated data on atomic energy levels, wavelengths, and transition probabilities that are reasonably up-to-date. A table of ground levels and ionization energies for the neutral atoms is given. You can also find here links to related databases of NIST. more info
NIST Chemistry WebBook
webbook.nist.gov [HTML]
This website provides access to data compiled and distributed by NIST (National Institute of Standards and Technology). You can find here thermochemical data for organic and small inorganic compounds, reaction thermochemistry data, IR spectra, mass spectra, electronic and vibrational spectra, constants of diatomic molecules, ion energetics data, thermophysical property data for fluids. You can search for data on specific compounds in the Chemistry WebBook based on name, chemical formula, CAS registry number, molecular weight, chemical structure, or selected ion energetics and spectral properties. more info
NIST Handbook of Basic Atomic Spectroscopic Data
physics.nist.gov/PhysRefData/Handbook/index.html [HTML]
The Handbook of Basic Atomic Spectroscopic Data is designed to provide a selection of the most important and frequently used atomic spectroscopic data in an easily accessible format. The compilation includes data for the neutral and singly-ionized atoms of all elements hydrogen through einsteinium (Z = 1-99). The wavelengths, intensities, and spectrum assignments are given in a table for each element, and the data for the approximately 12,000 lines of all elements are also collected into a single table, sorted by wavelength (a finding list). more info
NIST Property Data Summaries for Advanced Materials
www.ceramics.nist.gov/srd/summary/advmatdb.htm [HTML]
This web page contains the NIST Property Data Summaries for Advanced Materials, which are collections of property values derived from surveys of published data. These collections typically focus on either one material or one particular property. more info
NIST Property Data Summaries for Oxide Glasses
www.ceramics.nist.gov/srd/summary/glsmain.htm [HTML]
This web page contains the NIST Property Data Summaries for Oxide Glasses. The NIST Property Data Summaries are collections of property values derived from surveys of published data. These collections typically focus on either one material or one particular property. more info
NIST Scientific and Technical Databases : Atomic and Molecular Physics
www.nist.gov/srd/atomic.cfm [HTML]
The NIST collection of atomic energy levels, transition probabilities, and collision data is widely used by groups for characterizing and modelling all types of gaseous systems, including plasmas, planetary atmospheres, and astrophysical media, and for health physics applications. Databases and publications make these data easy to find and easy to use.This page provides a topically ordered list of links to relevant NIST databases. more info
NIST Scientific and Technical Databases : Chemical and Crystal Structure
www.nist.gov/srd/chemandcryst.cfm [HTML]
The Chemical and Crystal Structure category of the NIST Scientific and Technical Databases site describes databases that are valuable tools for today`s chemists, physicists, and materials scientists. These databases identify compounds or look for insights into material structures. A list of links to NIST databases dealing with aspects of chemical and crystal structure is provided by this page. more info
NIST Scientific and Technical Databases : Materials Properties
www.nist.gov/srd/materials.cfm [HTML/Javascript]
The NIST Materials Data Program provides evaluated data on phase equilibria, structure and characterization, and performance properties. Several materials performance property databases are now available, including the online NIST Ceramics WebBook which provides numeric data for physical and structural characteristics, mechanical and thermal properties, and properties of advanced ceramic materialsThis page provides a list of links to relevant NIST databases relating to materials properties. more info
NIST WebHTS Database (Expertise)
www.ceramics.nist.gov/srd/hts/htsquery.htm [HTML]
The NIST WWW High Temperature Superconductors database (WebHTS) provides evaluated thermal, mechanical, and superconducting property data for oxide superconductors. The range of materials covers the major series of compounds derived from the Y-Ba-Cu-O, Bi-Sr-Ca-Cu-O, Tl-Sr-Ca-Cu-O, and La-Cu-O chemical families, along with numerous other variants of the cuprate and bismuthate materials that are known to have superconducting phases. The materials are described by specification and characterization information that includes processing details and chemical compositions. Physical characteristics such as density and crystal structure are given in numeric tables. All measured values are evaluated and supported by descriptions of the measurement methods, procedures, and conditions. In all cases, the sources of the data are fully documented in a comprehensive bibliography. more info
NIST WebSCD Database
www.ceramics.nist.gov/srd/scd/scdquery.htm [HTML]
This web page contains the NIST Structural Ceramics Database (SCD), which provides a comprehensive collection of materials property data for advanced ceramics. The SCD covers the physical, mechanical, and thermal properties of oxide, boride, carbide, nitride, and oxynitride ceramic materials. In addition to the numeric data, the SCD provides full bibliographic references to the sources of the data, along with descriptions of the materials and the measurement methods. more info
NIST X-ray Photoelectron Spectroscopy Database
srdata.nist.gov/xps [HTML]
The NIST X-ray Photoelectron Spectroscopy (XPS) Database gives easy access to the energies of many photoelectron and Auger-electron spectral lines. Resulting from a critical evaluation of the published literature, the database contains line positions, chemical shifts, doublet splittings, and energy separations of photoelectron and Auger-electron lines. A highly interactive program allows the user to search by element, line type, line energy, and many other variables. Users can easily identify unknown measured lines by matching to previous measurements. more info
NN-Online
nn-online.org [HTML]
NN-OnLine allows you to instantaneously calculate and plot phaseshifts, scattering amplitudes and observables for several models of the NN interaction. Moreover you can browse the complete world database of low and intermediate energy nucleon-nucleon scattering data and compare the data with model predictions. It especially concerns the work on the baryon-baryon interaction: the nucleon-nucleon interaction, hyperon-nucleon interaction, antinucleon-nucleon interaction, and pion-nucleon interaction.The service is optimised to W3C standards that are accepted by browsers like Mozilla/Firefox or Opera, it does not work properly with Microsoft Internet Explorer. more info
Nuclear Wallet Cards : Current Version
www.nndc.bnl.gov/wallet/wccurrent.html [HTML/Javascript, PDF]
This version of nuclear wallet cards is periodically updated and contains the latest nuclear physics data. Users may get data via a periodic table or using a search function. Nuclear properties may also be explored with an interactive chart of nuclei. Nuclear Wallet Cards present properties for ground and isomeric states of all known nuclides. Properties given are spin and parity assignments, nuclear mass excesses, half-life, isotopic abundances, as well as decay modes. more info
nuclearmasses.org
www.nuclearmasses.org [HTML]
nuclearmasses.org was founded to improve the dissemination of nuclear mass information to the nuclear science community. The nuclearmasses.org team has written a suite of client-server applications that enable you to visualize and analyze models of nuclear masses, compare mass models to evaluated masses, upload your own mass values, and store and share your results with colleagues. Thus, the site can be used to inform the community of your latest mass models, measurements, and software tools. more info
NUCLEUS Catalogue of Nuclear Information Resources
nucleus.iaea.org/Home/index.html [HTML/Javascript]
This NUCLEUS site provides an information resource catalogue of IAEA`s nuclear information resources. You can browse by single or multiple subject area(s), organizational source(s), which are the departments and/or divisions of the IAEA or by data type(s). Alternatively, you may just click the browse button without selecting any specific option which will display a list of all resources that can currently be found on NUCLEUS. NUCLEUS is the common access point to the IAEA`s scientific, technical and regulatory information resources. It incorporates, and facilitates access to IAEA databases, scientific and technical publications as well as safety standards. more info
Open-ADAS
open.adas.ac.uk [HTML, TAR, GZIP]
The extensive high quality fundamental and derived atomic data for fusion generated in association with the ADAS Project and in the ADAS databases are a major resource. It is beneficial for this to be in the public domain, freed from the restriction of ADAS membership, as a guided provision. This provision is the core thrust of OPEN-ADAS. OPEN-ADAS allows for the download of a selected set of ADAS data and associated reading routines for them. OPEN-ADAS is a joint development between the ADAS Project and the IAEA. Registration is required but all downloads are free. more info
Plasma Gate : Databases for Atomic and Plasma Physics
plasma-gate.weizmann.ac.il/directories/databases [HTML/Javascript]
This service provides a list of links to databases relevant to atomic and plasma physics. more info
Reciprocal Net
www.reciprocalnet.org [HTML/Javascript, Java-Applet, JPEG, GIF]
The Reciprocal Net project will construct and deploy a distributed, open, extensible digital collection of molecular structures. Associated with the collection will be software tools for visualizing, interacting with, and rendering printable images of the contents; software for the automated conversion of local database representations into standard formats which can be globally shared; tools and components for constructing educational modules based on the collection; and examples of such modules as the beginning of a public repository for educational materials based on the collection. The contents of this collection will come principally from structures contributed by participating crystallography laboratories. The project is funded by the National Science Foundation (NSF) and is part of the National Science Digital Library. more info
Reference and Database of Optical Constants
www.astro.spbu.ru/JPDOC/f-dbase.html [HTML]
This database contains references to papers, data files and links to Internet resources related to measurements and calculations of optical constants in the wavelength interval from X-rays to radio domain. The materials considered are amorphous and crystalline silicates of different kinds, various ices, oxides, sulfides, carbides, carbonaceous species from amorphous carbon to graphite and diamonds and some other materials of astrophysical and terrestrial atmosphere interests. more info
Semiconductors on NSM
www.ioffe.rssi.ru/SVA/NSM/Semicond/index.html [HTML/Javascript, GIF]
This website is intended to systemize parameters of semiconductor compounds and heterostructures based on them. It enables physicists, both theoreticians and experimentalists, to rapidly retrieve the semiconducting material parameters they are interested in. In addition, physical parameters - optical, electrical, mechanical, etc. - are presented for both the known and new semiconducting compounds. more info
Stopping-Power and Range Tables for Electrons, Protons, and He : estar, astar and pstar
physics.nist.gov/PhysRefData/Star/Text/contents.html [HTML/Javascript, GIF]
This web page of the National Insitute of Standards and Technology (NIST) contains three databases. The databases ESTAR, PSTAR, and ASTAR calculate stopping-power and range tables for electrons, protons, or helium ions. Stopping-power and range tables can be calculated for electrons in any user-specified material and for protons and helium ions in several materials. more info
Table of Nuclides
atom.kaeri.re.kr [HTML/Javascript]
This chart of nuclides with an user-friendly graphic interface offers direct informations about the mass, half life, decay scheme, and cross section of the nuclides. You can find here an online plotter for MCNP and ENDF cross section data. As well you can get a table of gamma rays. Online services provide the electron and photon attenuation coefficients with user specified composition of materials. more info
Tables of Acoustic Properties of Materials
www.ondacorp.com/tecref_acoustictable.shtml [HTML/Javascript, PDF]
This page provided by Onda Corporation offers tables of acoustic properties of materials. more info
Tables of X-Ray Mass Attenuation Coefficients and Mass Energy-Absorption Coefficients
physics.nist.gov/PhysRefData/XrayMassCoef/cover.html [HTML, GIF]
This page provided by the National Institute of Standards and Technology (NIST) presents tables and graphs of the photon mass attenuation coefficient and the mass energy-absorption coefficient for all of the elements Z = 1 to 92, and for 48 compounds and mixtures of radiological interest. The tables cover energies of the photon (x-ray, gamma ray, bremsstrahlung) from 1 keV to 20 MeV. The compilation is intended to be used as reference data in radiation shielding and dosimetry computations. more info
The PGM Database
www.pgmdatabase.com/jmpgm/index.jsp [HTML/Javascript]
The PGM Database is a free database of properties on the six platinum group metals, their alloy systems and phase diagrams. It contains published data and internal Johnson Matthey data. Contributions of new data are welcome. Data sets include references. Graphics are provided in png format. more info
Wavenumber Calibration Tables
physics.nist.gov/PhysRefData/wavenum/html/contents.html [HTML, GIF]
These wavenumber tables for calibration of infrared spectrometers are provided by the National Institute of Standards and Technology (NIST). The database is set up to allow the user to look at a portion of the spectrum and corresponding calibration line list for a selected molecule. Molecules used are CO, OCS, N2O, NO, and CS2. more info
WebElements Periodic Table : NMR Properties
www.webelements.com/nmr.html [HTML/Javascript, GIF]
This website provides a database of Nuclear Magnetic Resonance data organised as a periodic table of elements. Definitions of NMR related terms are included as well. more info
WebElements Periodic Table : Physical Properties
www.webelements.com/physics.html [HTML/Javascript, GIF]
This part of the WebElements Periodic Table provides physical properties data of each element displayed in the periodic table. more info
WebElements Periodic Table : Thermochemistry and Thermodynamics
www.webelements.com/thermochemistry.html [HTML/Javascript, GIF]
This part of the WebElements Periodic Table provides thermochemical and thermodynamic data on each element displayed in the periodic table. more info
X-Ray Transition Energies
physics.nist.gov/PhysRefData/XrayTrans/index.html [HTML/Javascript]
This x-ray transition table offered by the National Institute of Standards and Technology (NIST) provides the energies for K transitions connecting the K shell (n = 1) to the shells with principal quantum numbers n = 2 to 4 and L transitions connecting the L1, L2, and L3 shells (n = 2) to the shells with principal quantum numbers n = 3 and 4. The elements covered include Z = 10, neon to Z = 100, fermium. There are two unique features of this database: (1) all experimental values are on a scale consistent with the International System of measurement (the SI) and the numerical values are determined using constants from the Recommended Values of the Fundamental Physical Constants: 1998 and (2) accurate theoretical estimates are included for all transitions. more info
XCOM : Photon Cross Sections Database
physics.nist.gov/PhysRefData/Xcom/Text/XCOM.html [HTML, Fortran, GIF]
The XCOM database provided by the National Institute of Standards and Technology (NIST) can be used to calculate photon cross sections for scattering, photoelectric absorption and pair production, as well as total attenuation coefficients, for any element to Z = 100, compound or mixture, at energies from 1 keV to 100 GeV. The XCOM program can generate cross sections on a standard energy grid (spaced approximately logarithmically), or on a grid selected by the user, or for a mix of both grids. Cross sections at energies immediately above and below all absorption edges are automatically included. XCOM provides two forms of output: (a) tables which correspond closely in format to existing tables in the literature; (b) graphical display of the tabular data. more info

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