K-edge x-ray-absorption spectroscopy of laser-generated Kr+ and Kr2+

被引：25

作者：

Southworth, S. H. ^{[1
]}

Arms, D. A. ^{[1
]}

Dufresne, E. M. ^{[1
]}

Dunford, R. W. ^{[1
]}

Ederer, D. L. ^{[1
]}

Hoehr, C. ^{[1
]}

Kanter, E. P. ^{[1
]}

Kraessig, B. ^{[1
]}

Landahl, E. C. ^{[1
]}

Peterson, E. R. ^{[1
]}

Rudati, J. ^{[1
]}

Santra, R. ^{[1
]}

Walko, D. A. ^{[1
]}

Young, L. ^{[1
]}

机构：

[1] Argonne Natl Lab, Argonne, IL 60439 USA

来源：

PHYSICAL REVIEW A | 2007年 / 76卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.76.043421

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Tunable, polarized, microfocused x-ray pulses were used to record x-ray absorption spectra across the K edges of Kr+ and Kr2+ produced by laser ionization of Kr. Prominent 1s -> 4p and 5p excitations are observed below the 1s ionization thresholds in accord with calculated transition energies and probabilities. Due to alignment of 4p hole states in the laser-ionization process, the Kr+ 1s -> 4p cross section varies with respect to the angle between the laser and x-ray polarization vectors. This effect is used to determine the Kr+ 4p(3/2) and 4p(1/2) quantum state populations, and these are compared with results of an adiabatic strong-field ionization theory that includes spin-orbit coupling.

引用

页数：9

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