BEYOND THE DIPOLE APPROXIMATION - ANGULAR-DISTRIBUTION EFFECTS IN VALENCE PHOTOEMISSION

Authors
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
Citation
O. Hemmers et al., BEYOND THE DIPOLE APPROXIMATION - ANGULAR-DISTRIBUTION EFFECTS IN VALENCE PHOTOEMISSION, Journal of physics. B, Atomic molecular and optical physics, 30(21), 1997, pp. 727-733
Citations number
25
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Optics
Journal title
Journal of physics. B, Atomic molecular and optical physics → ACNP
ISSN journal
09534075
Volume
30
Issue
21
Year of publication
1997
Pages
727 - 733
Database
ISI
SICI code
0953-4075(1997)30:21<727:BTDA-A>2.0.ZU;2-P
Abstract
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 gene ral need for caution in interpreting angle-resolved-photoemission meas urements.