Beyond the dipole approximation: angular-distribution effects in valence photoemission

被引：96

作者：

Hemmers, O

Fisher, G

Glans, P

Hansen, DL

Wang, H

Whitfield, SB

Wehlitz, R

Levin, JC

Sellin, IA

Perera, RCC

Dias, EWB

Chakraborty, HS

Deshmukh, PC

Manson, ST

Lindle, DW

机构：

[1] UNIV TENNESSEE,DEPT PHYS & ASTRON,KNOXVILLE,TN 37996

[2] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

[3] INDIAN INST TECHNOL,DEPT PHYS,MADRAS 600036,TAMIL NADU,INDIA

[4] GEORGIA STATE UNIV,DEPT PHYS,ATLANTA,GA 30303

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1997年 / 30卷 / 21期

关键词：

D O I：

10.1088/0953-4075/30/21/003

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Angular distributions of valence photoelectrons showing effects due to higher-multipole photon interactions have been measured for the first time. Neon 2s and 2p photoemission exhibits effects beyond the dipole approximation throughout the 250-1200 eV photon-energy range studied. The results suggest that any photoemission experiment, on any sample, can be affected at relatively low photon energies, pointing to a general need for caution in interpreting angle-resolved-photoemission measurements.

引用

页码：L727 / L733

页数：7

共 25 条

[21] LIMITATIONS ON VALIDITY OF NONRELATIVISTIC DIPOLE APPROXIMATION FOR PHOTOELECTRON ANGULAR-DISTRIBUTIONS [J].