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Titolo:
Nondipole parameters in angular distributions of electrons in photoionization of noble-gas atoms - art. no. 052506
Autore:
Amusia, MY; Baltenkov, AS; Chernysheva, LV; Felfli, Z; Msezane, AZ;
Indirizzi:
Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel Hebrew Univ Jerusalem Jerusalem Israel IL-91904 -91904 Jerusalem, Israel AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia AF Ioffe Phys Tech Inst St Petersburg Russia 194021 sburg 194021, Russia Arifov Inst Elect, Tashkent 700143, Uzbekistan Arifov Inst Elect Tashkent Uzbekistan 700143 Tashkent 700143, Uzbekistan Clark Atlanta Univ, Ctr Theoret Studies Phys Syst, Atlanta, GA 30314 USA Clark Atlanta Univ Atlanta GA USA 30314 Phys Syst, Atlanta, GA 30314 USA
Titolo Testata:
PHYSICAL REVIEW A
fascicolo: 5, volume: 6305, anno: 2001,
pagine: 2506 -
SICI:
1050-2947(200105)6305:5<2506:NPIADO>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
ENERGY PHOTOIONIZATION; MULTIPOLE CORRECTIONS; PHOTOELECTRONS; APPROXIMATION; RETARDATION; ASYMMETRIES;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
50
Recensione:
Indirizzi per estratti:
Indirizzo: Amusia, MY Hebrew Univ Jerusalem, Racah Inst Phys, IL-91904 Jerusalem, Israel Hebrew Univ Jerusalem Jerusalem Israel IL-91904 salem, Israel
Citazione:
M.Y. Amusia et al., "Nondipole parameters in angular distributions of electrons in photoionization of noble-gas atoms - art. no. 052506", PHYS REV A, 6305(5), 2001, pp. 2506

Abstract

The parameters that determine the nondipole (E1-E2) corrections to the photoelectron angular distribution have been investigated for the s- and p-subshells of the noble-gas atoms through comparing results calculated in the Hartree-Fock (HF) approximation and taking into account multielectron correlations, using the random-phase approximation with exchange. Our results cover the photoelectron energy range epsilon from the photoionization thresholds to 1.6 keV. We find the interesting result that near the photoionizationthresholds these parameters are generally characterized by an oscillatory behavior as a function of epsilon, exclusive of the parameter for the He 1ssubshell. These oscillations are sensitive to multielectron correlations, except those of the Ar 3p subshell. This finding supports once more that the photoprocesses in these atomic subshells are of a collective character. We conclude that their correct description cannot be achieved within the framework of a one-electron approximation such as the HF approximation. Results are presented and discussed.

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Documento generato il 28/01/20 alle ore 02:47:20