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Electric-octupole and pure-electric-quadrupole effects in soft-X-ray photoemission

被引：80
作者：
Derevianko, A
Hemmers, O
Oblad, S
Glans, P
Wang, H
Whitfield, SB
Wehlitz, R
Sellin, IA
Johnson, WR
Lindle, DW
机构：
[1] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
[2] Univ Nevada, Dept Chem, Las Vegas, NV 89154 USA
[3] Stockholm Univ, S-10405 Stockholm, Sweden
[4] Univ Uppsala, Dept Phys, S-75121 Uppsala, Sweden
[5] Univ Wisconsin, Dept Phys, Eau Claire, WI 54702 USA
[6] Univ Wisconsin, Ctr Synchrotron Radiat, Stoughton, WI 53589 USA
[7] Univ Tennessee, Dept Phys, Knoxville, TN 37996 USA
来源：
PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 10期
关键词：
D O I：
10.1103/PhysRevLett.84.2116
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Second-order [O(k(2)), k = omega/c] nondipole effects in soft-x-ray photoemission are demonstrated via an experimental and a theoretical study of angular distributions of neon valence photoelectrons in the 100-1200 eV photon-energy range. A newly derived theoretical expression for nondipolar angular distributions characterizes the second-order effects using four new parameters with primary contributions from pure-quadrupole and octupole-dipole interference terms;Independent-particle calculations of these parameters account for a significant portion of the existing discrepancy between experiment and theory for Ne 2p first-order nondipole parameters.
引用
收藏
页码：2116 / 2119
页数：4
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