Two- and three-photon ionisation transitions in caesium vapour

被引：2

作者：

Houston, C. M. ^{[2
]}

Drysdale, S. L. T. ^{[1
]}

Jennings, R. ^{[1
]}

Land, A. P. ^{[1
]}

Ledingham, K. W. D. ^{[1
]}

Singhal, R. P. ^{[1
]}

Smyth, M. H. C. ^{[1
]}

Stewart, D. T. ^{[1
]}

Towrie, M. ^{[1
]}

机构：

[1] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[2] Univ Glasgow, Dept Chem, Glasgow G12 8QQ, Lanark, Scotland

来源：

JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1988年 / 21卷 / 10期

关键词：

D O I：

10.1088/0022-3727/21/10S/017

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Resonant ionisation mass spectroscopy is rapidly becoming a popular ultrasensitive analytic technique. The elemental selectivity of this technique depends on multiphonon absorption by gas phase atoms. In an attempt to determine the efficiency of the resonant and ionisation steps, two-and three-photon ionisation transitions in caesium vapour were studied. Two-photon ionisation (one-photon excitation, one-photon ionisation) spectra of CS were obtained for the 6s-7p, 6s-8p, etc as well as the 6s-p Rydberg states. Three-photon ionisation (two-photon excitation, one-photon ionisation) spectra were also obtained in the region 660-620 nm. The three-photon ionisation transitions 6s-nd and 6s-ns were observed, with the s-s transitions being more prominent than theory predicts.

引用

页码：S59 / S62

页数：4

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