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

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F11%3A00365548" target="_blank" >RIV/61389005:_____/11:00365548 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1140/epja/i2011-11064-9" target="_blank" >http://dx.doi.org/10.1140/epja/i2011-11064-9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1140/epja/i2011-11064-9" target="_blank" >10.1140/epja/i2011-11064-9</a>

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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Type
J<sub>x</sub> - 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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Project
<a href="/en/project/LC07050" target="_blank" >LC07050: Center of experimental nuclear astrophysics and nuclear physics</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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