Datasets
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NIST Energy Levels of Hydrogen and Deuterium dATABASE- SRD 142
This database provides theoretical values of energy levels of hydrogen and deuterium for principle quantum numbers n = 1 to 200 and all allowed orbital angular momenta l and... -
NIST Human Mitochondrial Protein Database
The Human Mitochondrial Protein Database (HMPDb) provides comprehensive data on mitochondrial and human nuclear encoded proteins involved in mitochondrial biogenesis and... -
NIST Tables of X-Ray Mass Energy-Absorption Coefficients and Mass Attenuation Coefficients - SRD 126
Tables of X-Ray Mass Attenuation Coefficients and Mass Energy - Absorption Coefficients from 1 keV to 20 MeV for Elements Z = 1 to 92 and 48 Additional Substances of Dosimetric... -
NIST Bibliography of Photon Total Cross Section (Attenuation Coefficient) Measurements
A bibliography is presented of papers reporting absolute measurements of photon (XUV, x-ray, gamma-ray, bremsstrahlung) total interaction cross sections or attenuation... -
NIST Stopping-Power & Range Tables for Electrons, Protons, and Helium Ions - SRD 124
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... -
NIST-CODATA Internationally Recommended 2014 Values of the Fundamental Physical Constants - SRD 121
This site, developed in the Physics Laboratory at NIST, addresses three topics: fundamental physical constants, the International System of Units (SI), which is the modern... -
NIST Radionuclide Half-Life Measurements - SRD 120 - SUPERSEDED
The data that formerly appeared here have been superseded by the data that now appear at the Decay Data Evaluation Project http://www.lnhb.fr/nuclear-data/nuclear-data-table/. -
NIST Photoionization of CO2 (ARPES) Database - SRD 119
CO2 is studied using dispersed synchrotron radiation in the 650 Å and 840 Å spectral region. The vibrationally resolved photoelectron spectra are analyzed to generate relative... -
NIST Wavenumbers for Calibration of IR Spectrometers - SRD 118
Wavenumber Calibration Tables from Heterodyne Frequency Measurements contains tables of gas-phase infrared transition wavenumbers and their spectroscopic assignments that are... -
NIST Triatomic Spectral Database - SRD 117
This data base contains the rotational spectral lines observed and reported in the open literature for 55 triatomic molecules through June 1976. The isotopic molecular species,... -
NIST Observed Interstellar Molecular Microwave Transitions Database - SRD 116
This database contains critically evaluated transition frequencies for the molecular transitions detected in interstellar and circumstellar clouds reported in the literature... -
NIST Hydrocarbon Spectral Database - SRD 115
This database contains the rotational spectral lines observed and reported in the open literature for 91 hydrocarbon molecules through September 1987. The isotopic molecular... -
NIST Diatomic Spectral Database - SRD 114
This database contains the rotational spectral lines observed and reported in the open literature for 121 diatomic molecules through July 2002. The isotopic molecular species,... -
NIST Ultraviolet Spectrum of Platinum Lamp - SRD 112
The Atlas provides lists of spectral lines with wavelengths, intensities, and energy level classifications, as well as graphical tracings of the observed spectrum of a platinum... -
NIST Ground Levels and Ionization Energies for the Neutral Atoms - SRD 111
Data for ground state electron configurations and ionization energies for the neutral atoms (Z = 1-104) including references. Version 2.0. -
NIST Atomic Transition Probability Bibliographic Database
This interactive database, maintained by the NIST Atomic Spectroscopy Data Center, contains more than 8000 references, dating from 1914 through current year and is updated... -
NIST Atomic Spectral Line Broadening Bibliographic Database
This interactive database, maintained by the NIST Atomic Spectroscopy Data Center, contains more than 6000 references, dating from 1889 through current year and is updated... -
NIST Handbook of Basic Atomic Spectroscopic Data - SRD 108
This handbook provides a selection of the most important and frequently used atomic spectroscopic data in an easily accessible format. The compilation includes energy levels,... -
NIST Electron-Impact Ionization Cross Section Database - SRD 107
This is a database of total ionization cross sections of atoms and molecules by electron impact. The cross sections were calculated using the Binary-Encounter-Bethe (BEB) model,... -
IUPAC/NIST Solubility Database - SRD 106
The IUPAC Solubility Data Series Volumes 1-103 (1979 to 2014) are made available online. Volumes 1-19 and 39-65 are available as scanned and OCR'd single PDF files. Volumes...