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.
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页码：L727 / L733
页数：7
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