Počet záznamů: 1
Effects of the atomic environment on the electron binding energies in samarium
- 1.
SYSNO ASEP 0458650 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Effects of the atomic environment on the electron binding energies in samarium Tvůrce(i) Inoyatov, A. K. (RU)
Kovalík, Alojz (UJF-V) RID, ORCID, SAI
Filosofov, D. V. (RU)
Ryšavý, Miloš (UJF-V) RID, ORCID, SAI
Vénos, Drahoslav (UJF-V) RID, SAI, ORCID
Yushkevich, Y. V. (RU)
Perevoshchikov, L. L. (RU)
Zhdanov, V. S. (KZ)Celkový počet autorů 8 Zdroj.dok. Journal of Electron Spectroscopy and Related Phenomena. - : Elsevier - ISSN 0368-2048
Roč. 207, FEB (2016), s. 38-49Poč.str. 12 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Sm-149 ; atomic environment ; electron ginding energy ; intermediate-valence state ; chemical shift ; natural atomic level width Vědní obor RIV BG - Jaderná, atomová a mol. fyzika, urychlovače CEP GAP203/12/1896 GA ČR - Grantová agentura ČR LG14004 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UJF-V - RVO:61389005 UT WOS 000371940400008 EID SCOPUS 84955464329 DOI 10.1016/j.elspec.2015.12.009 Anotace Effects of the atomic environment on the L-1, L-2, L-3, M-1, M-2, M-3, and N-1 electron binding energies in samarium generated in the electron capture decay of radioactive Eu-149 were investigated by means of the internal conversion electron spectroscopy using the conversion electron spectrum of the 22.5 keV M1 + E2 nuclear transition in the daughter 149Sm. In this investigation, four pairs of Eu-149 sources prepared by vacuum evaporation deposition and by ion implantation at 30 keV with the use of four different source backing materials, namely polycrystalline carbon, aluminium, gadolinium and platinum foils, were employed. The greatest average difference of (3.1 +/- 0.1) eV in the L-1, L-2, L-3, and M-1 subshell electron binding energies was observed between the Eu-149 sources prepared by ion implantation into the aluminium and platinum substrates. On the other hand, minimal differences in the electron binding energies were generally found between samarium generated in the evaporated layer and in the bulk for the individual investigated source backings with the exception of the gadolinium foil. A doublet structure of all investigated conversion electron lines with the average values of 8.1 +/- 0.2 eV and 1.5 +/- 0.1 for the separation energy and the intensity ratio of the low-energy to high-energy components, respectively, was observed for the Eu-149 sources prepared by ion implantation into the aluminium and carbon foils. This structure was presumably caused by the presence of both the trivalent and divalent Sm ions in the sources. No significant differences in natural widths of the L-1, L-2, L-3, M-1, M-2, and M-3 samarium atomic levels among the investigated matrices were observed with the exception of the source prepared by the implantation of the Eu-149 ions into the platinum foil for which the determined values for all investigated subshells were apparently higher. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2017
Počet záznamů: 1