Počet záznamů: 1
Scattering of 7.3 keV conversion electrons from a Co-57 source covered gradually by gold absorbers of various thicknesses
- 1.
SYSNO ASEP 0185724 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název Scattering of 7.3 keV conversion electrons from a Co-57 source covered gradually by gold absorbers of various thicknesses Tvůrce(i) Dragoun, Otokar (UJF-V) RID, SAI
Špalek, Antonín (UJF-V) RID
Kovalík, Alojz (UJF-V) RID, ORCID, SAI
Yakushev, E. A. (RU)
Ryšavý, Miloš (UJF-V) RID, ORCID, SAI
Frána, Jaroslav (UJF-V)
Brabec, Vlastislav (UJF-V)
Novgorodov, A. F. (RU)
Liljequist, D. (SE)Zdroj.dok. Nuclear Instruments & Methods in Physics Research Section B. - : Elsevier - ISSN 0168-583X
Roč. 194, č. 2 (2002), s. 112-122Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova electron scattering ; thin gold layers ; neutron activation analysis Vědní obor RIV BG - Jaderná, atomová a mol. fyzika, urychlovače CEP GA202/00/1625 GA ČR - Grantová agentura ČR KSK1048102 GA AV ČR - Akademie věd CEZ AV0Z1048901 - UJF-V Anotace The conversion electrons emitted with initial energy of 7.3 keV from the K-shell of 57 Fe atoms were measured with an electrostatic spectrometer set to the instrumental resolution of 7 eV. The source - Co-57 on an Al backing - was covered in successive steps by six evaporated Au layers and changes of the line shapes were recorded. The thicknesses of the Au absorbers determined by neutron activation analysis varied from 2.7 to 21 nm, i.e. up to about three times the inelastic mean free path of the 7.3 keV electrons. The individual elastic and inelastic scattering events in the A1 backing, Au absorbers and carbonaceous contamination overlayer were simulated by the Monte Carlo method. When the Au energy loss function derived by Yoshikawa et al. was applied in MC simulations, a reasonable agreement with measured line shapes was reached even for the thickest Au absorbers. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2004
Počet záznamů: 1