Naslov
Calculations of Effective Atomic Number

Autori
Kaliman, Zoran ; Orlić, Nada ; Jelovica, Ivana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
ISRP-10 (10th International Symposium on Radiation Physics), Book of Abstracts / - , 2006, A-18

Skup
ISRP-10 (10th International Symposium on Radiation Physics)

Mjesto i datum
Coimbra, Portugal, 17.09.2006. - 22.09.2006

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Effective atomic number; effective charge number; variational method; Compton scattering; positron-electron annihilation

Sažetak
We will present and discuss effective atomic number (Zeff) obtained by different methods of calculations. There is no unique relation between computed values. This observation led us to the conclusion that any Zeff is valid only for given process. We will compare Zeff obtained by following methods: 1. Variational method (Slater), 2. Relativistic expression for bound energy of electron. 3. Differential cross section for Compton scattering and total cross section for nuclear excitation by positron annihilation (NEPEA). We illustrate calculations for different subshells of atom Z=72 and for L3 subshell of several other atoms. In contrast to variational method, other calculations show that electrons from outer shells also contribute in screening of nuclei.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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