Pressure broadening and shift of the cesium D1 transition by the noble gases and N2, H2, HD, D2, CH4, C2 H6, CF4, and H3 e

Greg A. Pitz, Douglas E. Wertepny, Glen P. Perram

Research output: Contribution to journalArticlepeer-review

92 Scopus citations

Abstract

The pressure broadening and shift rates for the cesium D1 (6 P2 1/2 ←6 S2 1/2) transition with the noble gases and N2, H2, HD, D2, CH4, C2 H6, CF4, and H3 e were obtained for pressures less than 300 torr at temperatures under 65°C by means of laser absorption spectroscopy. The collisional broadening rate, γL, for He, Ne, Ar, Kr, Xe, N2, H2, HD, D2, CH4, C2 H6, CF4, and H3 e are 24.13, 10.85, 18.31, 17.82, 19.74, 16.64, 20.81, 20.06, 18.04, 29.00, 26.70, 18.84, and 26.00 MHz/torr, respectively. The corresponding pressure-induced shift rates, δ, are 4.24, -1.60, -6.47, -5.46, -6.43, -7.76, 1.11, 0.47, 0.00, -9.28, -8.54, -6.06, and 6.01 MHz/torr. These rates have then been utilized to calculate Lennard-Jones potential coefficients to quantify the interatomic potential surfaces. The broadening cross section has also been shown to correlate with the polarizability of the collision partner.

Original languageEnglish
Article number062718
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Volume80
Issue number6
DOIs
StatePublished - 21 Dec 2009
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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