Photoelectron spectroscopy on atomic Pr and Nd in the 4d giant resonance region

被引：4

作者：

Gottwald, A ^{[1
]}

Gerth, C ^{[1
]}

Groen, M ^{[1
]}

Richter, M ^{[1
]}

Zimmermann, P ^{[1
]}

机构：

[1] Tech Univ Berlin, Inst Atomare & Analyt Phys, D-10623 Berlin, Germany

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1998年 / 31卷 / 17期

关键词：

D O I：

10.1088/0953-4075/31/17/012

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The photoionization of atomic Pr and Nd in the region of the 4d(-1)(4, epsilon)f giant resonances has been investigated with the use of monochromatized synchrotron radiation. The kinetic energy of the photoelectrons has been analysed, in part, with a high-resolution electron spectrometer to resolve the complex multiplet splitting. The partial cross sections for photoionization in the different electronic subshells 6s, 5p, 5s, 4f, and 4d have been determined. The character of the resonances is found to be of highly intermediate 4d(-1)(4, epsilon)f-type, i.e. discrete and continuum transitions are almost in equilibrium. The direct 4d(-1) photoionization is discussed in terms of a tunnel model for atomic shape resonances.

引用

页码：3875 / 3884

页数：10

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