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

R. Trainham, G. D. Fletcher, Daniel John Larson

Research output: Contribution to journalArticle

104 Citations (Scopus)

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 languageEnglish (US)
Article number002
JournalJournal of Physics B: Atomic and Molecular Physics
Volume20
Issue number23
DOIs
StatePublished - Dec 1 1987

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detachment
chlorine
photons
ions
photodetachment
electron affinity
negative ions
nonlinearity
anomalies
cross sections

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

Cite this

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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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One- and two-photon detachment of the negative chlorine ion. / Trainham, R.; Fletcher, G. D.; Larson, Daniel John.

In: Journal of Physics B: Atomic and Molecular Physics, Vol. 20, No. 23, 002, 01.12.1987.

Research output: Contribution to journalArticle

TY - JOUR

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

AU - Trainham, R.

AU - Fletcher, G. D.

AU - Larson, Daniel John

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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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