Absolute photoionization cross sections for Kr(5s) and Kr2 5s 3Σu+(1u, 0u -) excited states at 248 nm

D. B. Geohegan; A. W. McCown; J. G. Eden

doi:10.1063/1.452310

Absolute photoionization cross sections for Kr(5s) and Kr₂ 5s ³Σ_u⁺(1_u, 0_u ^-) excited states at 248 nm

D. B. Geohegan, A. W. McCown, J. G. Eden

Electrical and Computer Engineering

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Abstract

Absolute cross sections for the photoionization of Kr (5s) and Kr ₂ 5s ³Σ_u⁺ (1_u, 0_u^-) at 248 nm have been measured to be (5.7±1.1)×10^-19 and (1.4±0.3)×10 ^-18 cm², respectively. In these experiments, absolute photoelectron densities were measured in real time with a microwave absorption apparatus, and the excited atomic and molecular species were produced and subsequently photoionized by excimer lasers. The measured Kr (5s) cross section is consistent with the upper limit experimentally determined by Dunning and Stebbings [Phys. Rev. A 9, 2378 (1974)] and is close to the theoretical value calculated by Hartquist [J. Phys. B 11, 2101 (1978)]. For Kr₂ 5s ³Σ_u⁺ (1_u, 0_u ^-), the cross section reported here is intermediate to those measured previously for the lowest ³Σ_u⁺ states of Ar₂ and Xe₂.

Original language	English (US)
Pages (from-to)	577-587
Number of pages	11
Journal	The Journal of Chemical Physics
Volume	86
Issue number	2
DOIs	https://doi.org/10.1063/1.452310
State	Published - 1986

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1063/1.452310

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@article{58a2fe2b5b234e1aaa39bac3a7c0195a,

title = "Absolute photoionization cross sections for Kr(5s) and Kr2 5s 3Σu+(1u, 0u -) excited states at 248 nm",

abstract = "Absolute cross sections for the photoionization of Kr (5s) and Kr 2 5s 3Σu+ (1u, 0u-) at 248 nm have been measured to be (5.7±1.1)×10-19 and (1.4±0.3)×10 -18 cm2, respectively. In these experiments, absolute photoelectron densities were measured in real time with a microwave absorption apparatus, and the excited atomic and molecular species were produced and subsequently photoionized by excimer lasers. The measured Kr (5s) cross section is consistent with the upper limit experimentally determined by Dunning and Stebbings [Phys. Rev. A 9, 2378 (1974)] and is close to the theoretical value calculated by Hartquist [J. Phys. B 11, 2101 (1978)]. For Kr2 5s 3Σu+ (1u, 0u -), the cross section reported here is intermediate to those measured previously for the lowest 3Σu+ states of Ar2 and Xe2.",

author = "Geohegan, {D. B.} and McCown, {A. W.} and Eden, {J. G.}",

year = "1986",

doi = "10.1063/1.452310",

language = "English (US)",

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pages = "577--587",

journal = "The Journal of Chemical Physics",

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publisher = "American Institute of Physics Publising LLC",

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T1 - Absolute photoionization cross sections for Kr(5s) and Kr2 5s 3Σu+(1u, 0u -) excited states at 248 nm

AU - Geohegan, D. B.

AU - McCown, A. W.

AU - Eden, J. G.

PY - 1986

Y1 - 1986

N2 - Absolute cross sections for the photoionization of Kr (5s) and Kr 2 5s 3Σu+ (1u, 0u-) at 248 nm have been measured to be (5.7±1.1)×10-19 and (1.4±0.3)×10 -18 cm2, respectively. In these experiments, absolute photoelectron densities were measured in real time with a microwave absorption apparatus, and the excited atomic and molecular species were produced and subsequently photoionized by excimer lasers. The measured Kr (5s) cross section is consistent with the upper limit experimentally determined by Dunning and Stebbings [Phys. Rev. A 9, 2378 (1974)] and is close to the theoretical value calculated by Hartquist [J. Phys. B 11, 2101 (1978)]. For Kr2 5s 3Σu+ (1u, 0u -), the cross section reported here is intermediate to those measured previously for the lowest 3Σu+ states of Ar2 and Xe2.

AB - Absolute cross sections for the photoionization of Kr (5s) and Kr 2 5s 3Σu+ (1u, 0u-) at 248 nm have been measured to be (5.7±1.1)×10-19 and (1.4±0.3)×10 -18 cm2, respectively. In these experiments, absolute photoelectron densities were measured in real time with a microwave absorption apparatus, and the excited atomic and molecular species were produced and subsequently photoionized by excimer lasers. The measured Kr (5s) cross section is consistent with the upper limit experimentally determined by Dunning and Stebbings [Phys. Rev. A 9, 2378 (1974)] and is close to the theoretical value calculated by Hartquist [J. Phys. B 11, 2101 (1978)]. For Kr2 5s 3Σu+ (1u, 0u -), the cross section reported here is intermediate to those measured previously for the lowest 3Σu+ states of Ar2 and Xe2.

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