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Erratum: Elastic Rate Coefficients of Li + H_2 collisions in the calibration of a Cold Atom Vacuum Standard

Published

Author(s)

Constantinos Makrides, Daniel Barker, James A. Fedchak, Julia Scherschligt, Stephen Eckel, Eite Tiesinga

Abstract

We found an error in our computation of the thermally averaged total rate coefficients for the collision of a room-temperature hydrogen dimer H$_2$ with an ultra-cold lithium sensor atom. We incorrectly accounted for the nuclear spin degeneracy and omitted the factor $1/\sqrt\pi}$ in the normalization over the Boltzmann distribution. Our corrected predictions for the thermally-averaged rate coefficient for a 300K H$_2$ gas and a 1$\mu$K Li gas are $3.13(6) \times 10^-9}$ cm$^3}$/s and $3.18(6) \times 10^-9}$ cm$^3}$/s for H$_2$+$^6$Li and H$_2$+$^7$Li, respectively, where the number in parenthesis is the one-standard-deviation uncertainty in the last significant digit. Moreover, the temperature dependence of the corrected rate coefficients near 300K is significantly smaller than in our original article.
Citation
Physical Review A
Volume
105

Citation

Makrides, C. , Barker, D. , Fedchak, J. , Scherschligt, J. , Eckel, S. and Tiesinga, E. (2022), Erratum: Elastic Rate Coefficients of Li + H_2 collisions in the calibration of a Cold Atom Vacuum Standard, Physical Review A, [online], https://doi.org/10.1103/PhysRevA.105.039903, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=934440 (Accessed December 9, 2022)
Created March 24, 2022, Updated November 29, 2022