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Improved characteristics of the 22.5 keV (M1+E2) nuclear transition in (149)Sm

SYSNO ASEP	0365548
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Improved characteristics of the 22.5 keV (M1+E2) nuclear transition in (149)Sm
Author(s)	Inoyatov, A. K. (RU) Filosofov, D. V. (RU) Gorozhankin, VM. (RU) Kovalík, Alojz (UJF-V)_{RID, ORCID, SAI} Adam, Jiří (UJF-V)_{RID, ORCID, SAI} Perevoshchikov, L. L. (RU) Ryšavý, Miloš (UJF-V)_{RID, ORCID, SAI}
Source Title	European Physical Journal A. - : Springer - ISSN 1434-6001 Roč. 47, č. 5 (2011), 64/1-64/5
Number of pages	6 s.
Language	eng - English
Country	DE - Germany
Keywords	INTERNAL-CONVERSION COEFFICIENTS ; DECAY
Subject RIV	BF - Elementary Particles and High Energy Physics
R&D Projects	LC07050 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z10480505 - UJF-V (2005-2011)
UT WOS	000291659900006
DOI	10.1140/epja/i2011-11064-9
Annotation	The gamma ray and conversion electron spectra of the 22.5 keV M1 + E2 nuclear transition depopulating the first excited level 5/2(-) in (149)Sm were investigated in detail. A substantially improved value of 22500.2 +/- 0.8 eV for the transition energy was determined that opens a possibility to establish an electron energy standard for the keV region based on the conversion electron lines of this transition. The E2 admixture parameter vertical bar delta(E2/M1)vertical bar = 0.0784 +/- 0.0009 and the nuclear structure parameter lambda = -2 +/- 10 were derived. The vertical bar delta(E2/M1)vertical bar and lambda parameters were also obtained for all available experimental data and their mutual combination.
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2012

Number of the records: 1