One- and two-photon detachment of the negative chlorine ion

R. Trainham; G. D. Fletcher; D. J. Larson

doi:10.1088/0022-3700/20/23/002

One- and two-photon detachment of the negative chlorine ion

R. Trainham, G. D. Fletcher, D. J. Larson

Physics

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112 Scopus citations

Abstract

The authors report the first observation of tunable non-resonant two-photon photodetachment of an atomic negative ion and compare the two-photon detachment cross section of Cl^- to the single-photon detachment one. In each case, Wigner law behaviour is observed, with s-wave detachment for the single-photon process and p-wave detachment for the two-photon process. The measured electron affinity of chlorine is 29 138.3 (5) cm^-1, improving the precision of that number by more than an order of magnitude over previous measurements. The order of non-linearity of the two-photon detachment process appears to be less than two. Possible explanations for this anomaly are discussed.

Original language	English (US)
Article number	002
Pages (from-to)	L777-L784
Journal	Journal of Physics B: Atomic and Molecular Physics
Volume	20
Issue number	23
DOIs	https://doi.org/10.1088/0022-3700/20/23/002
State	Published - Dec 1 1987

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1088/0022-3700/20/23/002

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abstract = "The authors report the first observation of tunable non-resonant two-photon photodetachment of an atomic negative ion and compare the two-photon detachment cross section of Cl- to the single-photon detachment one. In each case, Wigner law behaviour is observed, with s-wave detachment for the single-photon process and p-wave detachment for the two-photon process. The measured electron affinity of chlorine is 29 138.3 (5) cm-1, improving the precision of that number by more than an order of magnitude over previous measurements. The order of non-linearity of the two-photon detachment process appears to be less than two. Possible explanations for this anomaly are discussed.",

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T1 - One- and two-photon detachment of the negative chlorine ion

AU - Trainham, R.

AU - Fletcher, G. D.

AU - Larson, D. J.

PY - 1987/12/1

Y1 - 1987/12/1

N2 - The authors report the first observation of tunable non-resonant two-photon photodetachment of an atomic negative ion and compare the two-photon detachment cross section of Cl- to the single-photon detachment one. In each case, Wigner law behaviour is observed, with s-wave detachment for the single-photon process and p-wave detachment for the two-photon process. The measured electron affinity of chlorine is 29 138.3 (5) cm-1, improving the precision of that number by more than an order of magnitude over previous measurements. The order of non-linearity of the two-photon detachment process appears to be less than two. Possible explanations for this anomaly are discussed.

AB - The authors report the first observation of tunable non-resonant two-photon photodetachment of an atomic negative ion and compare the two-photon detachment cross section of Cl- to the single-photon detachment one. In each case, Wigner law behaviour is observed, with s-wave detachment for the single-photon process and p-wave detachment for the two-photon process. The measured electron affinity of chlorine is 29 138.3 (5) cm-1, improving the precision of that number by more than an order of magnitude over previous measurements. The order of non-linearity of the two-photon detachment process appears to be less than two. Possible explanations for this anomaly are discussed.

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One- and two-photon detachment of the negative chlorine ion

Abstract

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