EXTENSIVE DOUBLE-EXCITATION STATES IN ATOMIC HELIUM

被引：195

作者：

DOMKE, M

XUE, C

PUSCHMANN, A

MANDEL, T

HUDSON, E

SHIRLEY, DA

KAINDL, G

GREENE, CH

SADEGHPOUR, HR

PETERSEN, H

机构：

[1] UNIV COLORADO,JOINT INST LAB ASTROPHYS,BOULDER,CO 80309

[2] UNIV COLORADO,DEPT PHYS,BOULDER,CO 80309

[3] BERLINER ELECTRONENSPEICHERRING GESSELL SYNCHROTRONSTRAHLUNG,W-1000 BERLIN 33,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.66.1306

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

High-resolution photoionization studies of He have revealed more than 50 states below the N = 2-7 thresholds of He+, including sixteen (sp,2n+) and five (sp,2n-) states in the N = 2 series. With a resolving power of E/DELTA-E congruent-to 10 000, states as narrow as 0.1 meV could be observed and linewidths were determined with an accuracy up to +/- 0.5 meV. Interchannel interferences, evident through effects on positions, shapes, and intensities of Rydberg lines, were interpreted within the framework of the multichannel quantum-defect theory.

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页码：1306 / 1309

页数：4

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