Pressure broadening and shift of the cesium D{sub 1} transition by the noble gases and N{sub 2}, H{sub 2}, HD, D{sub 2}, CH{sub 4}, C{sub 2}H{sub 6}, CF{sub 4}, and {sup 3}He

Journal Article · Tue Dec 15 04:00:00 EST 2009 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.80.062718· OSTI ID:21352362

Pitz, Greg A; Wertepny, Douglas E; Perram, Glen P ^[1]

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1. Department of Engineering Physics, Air Force Institute of Technology, 2950 Hobson Way, Wright-Patterson Air Force Base, Ohio 45433-7765 (United States)

The pressure broadening and shift rates for the cesium D{sub 1} (6 {sup 2}P{sub 1/2}<-6 {sup 2}S{sub 1/2}) transition with the noble gases and N{sub 2}, H{sub 2}, HD, D{sub 2}, CH{sub 4}, C{sub 2}H{sub 6}, CF{sub 4}, and {sup 3}He were obtained for pressures less than 300 torr at temperatures under 65 deg. C by means of laser absorption spectroscopy. The collisional broadening rate, gamma{sub L}, for He, Ne, Ar, Kr, Xe, N{sub 2}, H{sub 2}, HD, D{sub 2}, CH{sub 4}, C{sub 2}H{sub 6}, CF{sub 4}, and {sup 3}He 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, delta, 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.

• OSTI ID: 21352362
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 80; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTROSCOPY
ALKALI METALS
ALKANES
ATOM COLLISIONS
ATOM-MOLECULE COLLISIONS
CARBON TETRAFLUORIDE
CESIUM
CHALCOGENIDES
COLLISIONS
CROSS SECTIONS
DEUTERIUM
DIMETHYL SULFIDE
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY
ETHANE
EVEN-ODD NUCLEI
FLUIDS
FLUORINATED ALIPHATIC HYDROCARBONS
FREQUENCY RANGE
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HELIUM 3
HELIUM ISOTOPES
HYDROCARBONS
HYDROGEN
HYDROGEN ISOTOPES
ISOTOPES
LENNARD-JONES POTENTIAL
LIGHT NUCLEI
LINE BROADENING
METALS
METHANE
MHZ RANGE
MOLECULE COLLISIONS
NITROGEN
NONMETALS
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
PHYSICAL PROPERTIES
POLARIZABILITY
POTENTIAL ENERGY
POTENTIALS
RARE GASES
SPECTRAL SHIFT
SPECTROSCOPY
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS