Research data from NIST ...

The values of the fundamental physical constants provided at this site are recommended for international use by CODATA and are the latest available.

JPL Molecular Spectroscopy Molecular spectroscopy is the study of absorption of light by molecules. In the gas phase at low pressures, molecules exhibit absorption in narrow lines which are very characteristic of the molecule as well as the temperature and pressure of its environment. In the microwave and long-wavelength infrared regions of the spectrum, these lines are due to quantized ...

Welcome to the NDRL Radiation Chemistry Data Center! The Radiation Chemistry Data Center of the Notre Dame Radiation Laboratory is an information resource dedicated to the collection, evaluation, and dissemination of data characterizing the reactions of transient intermediates produced by radiation chemical and photochemical methods. The Center makes the result of its data projects available in ...

Access to the Electronic Structures Database Thanks for your interest in our Electronic Structures Database. Please enter your name, affiliation, and email address in the form below. Your data will be kept confidential. We only ask you to provide this information in order to determine who is using our database. After entering the data you will be taken to the homepage of the Electronic ...

Welcome to Quest Consultants Inc.'s Thermodynamic Properties Page Now with more chemicals! Component data by Bill Terrell Go to the Quest Consultants Inc. Home Page NEW! Try our two newest thermo pages. Bubble Points and Dew Points Enthalpy-Pressure Diagram Page This page allows users to select a pure component or a mixture of components and determine the vapor-liquid split (if two-phase), the ...

Ideal gas thermochemistry. Comparisons between theory and experiment.

REACTION MECHANISMS The present reaction table contains reactions of GRI-Mech 2.11. The reactions comprising GRI-Mech were first assembled from current literature and their rate coefficients evaluated considering experimental spread and theoretical consistency as some of the criteria. 53 rate coefficients were selected for further numerical optimization against chosen experimental targets, based ...