Pressure broadening and shift of the cesium D{sub 2} 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 with comparison to the D{sub 1} transition

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.042502· OSTI ID:21450762

Pitz, Greg A; Fox, Charles D; 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 2} (6 {sup 2}P{sub 3/2} (<-) 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 a temperature of 40 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 20.59, 9.81, 16.47, 15.54, 18.41, 19.18, 27.13, 28.24, 22.84, 25.84, 26.14, 17.81, and 22.35 MHz/Torr, respectively. The uncertainty in the broadening rates is typically less than 0.3%. The corresponding pressure-induced shift rates {delta} are 0.69, -2.58, -6.18, -6.09, -6.75, -6.20, -4.83, -4.49, -4.54, -8.86, -9.38, -6.47, and 0.60 MHz/Torr with an uncertainty of less than 0.04 MHz/Torr. With the exception of diatomic collision partners, the broadening rates for Cs D{sub 2} are 5%-15% less than the rates for Cs D{sub 1}. For light collision partners with a blue shift, the D{sub 1} is shifted more than the D{sub 2} line. The broadening cross sections for Cs and Rb are similar. However, the cross sections for K are about 70% larger and for Na, about 30% less.

• OSTI ID: 21450762
• Journal Information: Physical Review. A, Vol. 82, Issue 4; Other Information: DOI: 10.1103/PhysRevA.82.042502; (c) 2010 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION SPECTROSCOPY
ATOM COLLISIONS
CARBON TETRAFLUORIDE
CESIUM
COMPARATIVE EVALUATIONS
CROSS SECTIONS
DIMETHYL SULFIDE
ENERGY-LEVEL TRANSITIONS
ETHANE
HELIUM 3
HYDROGEN
LINE BROADENING
METHANE
MHZ RANGE
RARE GASES
VISIBLE RADIATION
ALKALI METALS
ALKANES
CHALCOGENIDES
COLLISIONS
ELECTROMAGNETIC RADIATION
ELEMENTS
EVALUATION
EVEN-ODD NUCLEI
FLUIDS
FLUORINATED ALIPHATIC HYDROCARBONS
FREQUENCY RANGE
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HELIUM ISOTOPES
HYDROCARBONS
ISOTOPES
LIGHT NUCLEI
METALS
NONMETALS
NUCLEI
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
RADIATIONS
SPECTROSCOPY
STABLE ISOTOPES
SULFIDES
SULFUR COMPOUNDS