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Phys Rev Lett
; 84(10): 2116-9, 2000 Mar 06.
Artigo
em Inglês
| MEDLINE
| ID: mdl-11017222
RESUMO
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.
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Angular momentum distributions of autoionizing states produced by 1.5-5-MeV C+ ions in carbon foils.
Phys Rev Lett
; 61(26): 2913-2916, 1988 Dec 26.
Artigo
em Inglês
| MEDLINE
| ID: mdl-10039263
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