1978
DOI: 10.1103/physreva.17.201
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Alkali negative ions. III. Multichannel photodetachment study ofCsandK

Abstract: A crossed ion-laser beam apparatus has been used to obtain Cs and K cross sections for photodetachment into the ground ($') and first excited state ('P) of the neutral atom in the photon energy range near the threshold for production of 'P neutrals. A total cross section is determined from the cross section for production of neutral atoms and the partial cross sections are obtained from the cross section for production of photoelectrons transmitted through a low-pass kinetic-energy filter. The filter character… Show more

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Cited by 77 publications
(22 citation statements)
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“…4 are a combination of data obtained with different bandwidths: a broadband scan over the full range of almost 500 cm-1 with A ~=5 cm -1, and narrowband scans around the two thresholds with bandwidths of 0.6 cm-1 and 0.1 cm -1. Our data can be compared with independent studies of Jones et al [16], who used a combination of neutral atom and threshold electron detection [7]. These authors have kindly provided their data for ~tot and ~rSp in a plot similar to the one in Fig.…”
Section: Measurements and Resultsmentioning
confidence: 81%
See 1 more Smart Citation
“…4 are a combination of data obtained with different bandwidths: a broadband scan over the full range of almost 500 cm-1 with A ~=5 cm -1, and narrowband scans around the two thresholds with bandwidths of 0.6 cm-1 and 0.1 cm -1. Our data can be compared with independent studies of Jones et al [16], who used a combination of neutral atom and threshold electron detection [7]. These authors have kindly provided their data for ~tot and ~rSp in a plot similar to the one in Fig.…”
Section: Measurements and Resultsmentioning
confidence: 81%
“…The goal of the present paper has been to measure and to analyse such data for Rb--photodetachment in the regions of the Rb(5p 2P1/2, 3/2) AV e-fine-structure thresholds. Accurate partial cross sections have been measured with a method complementary to approaches applied previously for K- [7,8] and Cs- [7] photo-detachment. Both the high resolution as well as the large amount of experimental data proved essential for a detailed theoretical analysis.…”
Section: Introductionmentioning
confidence: 99%
“…All ion beam studies to date (8,14,15) have also incorporated mass analysis in the ion transport from the source to the photon interaction region. While beam methods are essential for photoelectron studies, they have also been used extensively in threshold photodetachment measurements (15)(16)(17). In order to obtain adequate beam intensities, it has been necessary to use very poorly characterized negative ion sources.…”
Section: Ion Transportmentioning
confidence: 99%
“…Both pulsed (17,25) and continuous (14,17) tunable laser sources have been used for negative ion photodetachment studies. The first tunable laser measurements of S -photodetachment (26) were made with a flashlamp pumped pulsed tunable dye laser.…”
Section: Tunable Laser Sourcesmentioning
confidence: 99%
“…In some experiments, the threshold law only manifests itself well below 1 meV, 24 so we may be measuring a dependence, but we have not yet reached the energy region which demonstrates the threshold law.…”
Section: Discussionmentioning
confidence: 79%