Improved characteristics of the 22.5 keV (M1+E2) nuclear transition in (149)Sm
Result description
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.
Keywords
The result's identifiers
Result code in IS VaVaI
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Improved characteristics of the 22.5 keV (M1+E2) nuclear transition in (149)Sm
Original language description
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.
Czech name
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Czech description
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Classification
Type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BF - Elementary particle theory and high energy physics
OECD FORD branch
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Result continuities
Project
LC07050: Center of experimental nuclear astrophysics and nuclear physics
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
European Physical Journal A
ISSN
1434-6001
e-ISSN
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Volume of the periodical
47
Issue of the periodical within the volume
5
Country of publishing house
DE - GERMANY
Number of pages
6
Pages from-to
"64/1"-"64/5"
UT code for WoS article
000291659900006
EID of the result in the Scopus database
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Basic information
Result type
Jx - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP
BF - Elementary particle theory and high energy physics
Year of implementation
2011