ABSOLUTE CROSS-SECTIONS FOR THE PHOTOIONIZATION OF THE 6S6P P-1 EXCITED-STATE OF BARIUM

被引：72

作者：

HE, LW ^{[1
]}

BURKHARDT, CE ^{[1
]}

CIOCCA, M ^{[1
]}

LEVENTHAL, JJ ^{[1
]}

MANSON, ST ^{[1
]}

机构：

[1] GEORGIA STATE UNIV,DEPT PHYS & ASTRON,ATLANTA,GA 30303

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.67.2131

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Absolute photoionization cross sections for the 6s6p 1P excited state of Ba have been measured in the threshold region and found to agree substantially with theory, thus resolving previous discrepancies. Use was made of the "magic" angle applied to the relative orientation of the linear polarizations of the exciting and ionizing lasers; at this orientation angle the measured cross section is the same as if the excited state were populated isotropically. This phenomenon, which has general application to electric dipole photoabsorption processes, allowed us to make the measurements in two different ways, with excellent agreement between them.

引用

页码：2131 / 2134

页数：4

共 17 条

[1]

ANDERSEN LH, 1990, J PHYS B-AT MOL OPT, V23, P3167, DOI 10.1088/0953-4075/23/18/019

[2] PHOTOIONIZATION AND EXCITATION OF ATOMIC BARIUM FROM THE (6S6P)1P10 STATE [J].