PHOTOION SPECTRA IN COINCIDENCE WITH THRESHOLD ELECTRONS NEAR THE KR 3D IONIZATION LIMITS

被引：20

作者：

HAYAISHI, T

YAGISHITA, A

MURAKAMI, E

SHIGEMASA, E

MORIOKA, Y

SASAKI, T

机构：

[1] UNIV TSUKUBA,INST PHYS,TSUKUBA,IBARAKI 305,JAPAN

[2] CHIBA INST TECHNOL,NARASHINO,CHIBA 275,JAPAN

[3] TOHOKU UNIV,SCI MEASUREMENTS RES INST,SENDAI,MIYAGI 980,JAPAN

[4] NATL LAB HIGH ENERGY PHYS,PHOTON FACTORY,TSUKUBA,IBARAKI 305,JAPAN

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1990年 / 23卷 / 10期

关键词：

D O I：

10.1088/0953-4075/23/10/007

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Photoion spectra of Kr near the 3d ionisation limits have been measured using a threshold electron-photoion coincidence technique. The spectra of Kr2+ and Kr3+ ions show structures corresponding to the 3d-1np Rydberg states below the ionisation limits and to 3d 5/2 and 3d3/2 ionisation above the ionisation limits. It is proposed that the lower Rydberg states can decay by emitting threshold electrons through two-step autoionisation, such as Kr 3d-15p to Kr+ 4p-2(1S)6p to Kr2+ 4p -2(3P) and Kr 3d-15p to Kr2+ 4s -14p-2np (n>or=5) to Kr3+ 4p-3. The structures due to 3d threshold ionisation show the effect of post-collision interaction, namely peak shifts and asymmetric profiles. The shifts are almost the same in the Kr2+ and Kr3+ spectra.

引用

页码：1633 / 1639

页数：7

共 19 条

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