U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Publications

NIST Authors in Bold

Displaying 51 - 75 of 570

Modeling of Combustion of Fluorine-Containing Refrigerants

November 17, 2021
Author(s)
Valeri I. Babushok, Donald R. Burgess Jr., Dennis Kim, Michael Hegetschweiler, Gregory T. Linteris
… The model has been developed for the refrigerants: R-32, R-125, R-134a, R-152a, R-143, R-143a, R-1234yf, … R-1234yf, R-1234ze(E), R-1243yf, R-134a, R-152a, R-125, R-32, R-143, R-143a, fluoropropenes. …

Coherent Raman and Infrared Studies of Sulfur Trioxide

December 1, 2001
Author(s)
E T. Chrysostom, N Vulpanovici, Tony Masiello, J Barber, J W. Niblez, A Weber, A G. Maki, Thomas A. Blake
… of the IR-inactive Ņ 1 symmetric stretching mode of 32 S 16 0 3 and its various 18 O isotopomers. The Ņ 1 spectrum of 32 S 16 0 3 reveals two intense Q-branches In the 1065-1067 … this with a simple Fermi-resonance model involving Ņ 1 and 2 Ņ 4 states do not reproduce the spectral detail nor do they …

Isoplethic Method to Estimate Critical Lines for Binary Fluid Mixtures From Subcritical Vapor-Liquid Equilibrium: Application to the Azeotropic Mixtures R32 + C3 H8 and R125 + C3H8

October 1, 2001
Author(s)
L S. Van Poolen, C D. Holcomb, James C. Rainwater
A new, isoplethic method is used to determine critical lines of azeotropic binary fluid mixtures using vapor-liquid equilibrium data including saturated vapor and liquid densities below the lowest critical temperature of the pure components. Thermodynamic

A kilopixel array of superconducting nanowire single-photon detectors

November 18, 2019
Author(s)
Varun Verma, Adriana Lita, Sae Woo Nam, R P. Mirin, Emma Wollman, William Farr, Matthew Shaw
We present a 1024-element imaging array of superconducting nanowire single photon detectors (SNSPDs) using a 32x32 row-column multiplexing architecture. Large arrays are desirable for applications such as imaging, spectroscopy, or particle detection.

Absolute Frequency Atlas of Molecular I 2 Lines at 532 NM

April 1, 1999
Author(s)
Jun Ye, Lennart Robertsson, S Picard, L -. Ma, John L. Hall
… the measurement of the hyperfine splittings of the P(54) 32-0 and R(57)32-0 transitions near 532 nm. Within the tuning range of the … relatively strong ro-vibrational transitions of 127 I 2 molecules with excellent SNR. These transitions are now … Absolute Frequency Atlas of Molecular I 2 Lines at 532 NM …

A Study of a Water-to-Water Heat Pump Using Flammable Refrigerants

June 1, 1998
Author(s)
William V. Payne, Piotr A. Domanski, J Muller
This investigation compared the performance of R22 to the performance of R290 and that of flammable zeotropic mixtures, R32/290 and R32/152a. The tests were conducted in a test apparatus specially designed to simulate a residential water-to-water heat pump
Displaying 51 - 75 of 570
Was this page helpful?