https://doi.org/10.1140/epja/i2016-16133-y
Regular Article - Experimental Physics
Improved energy of the 21.5 keV M1 + E2 nuclear transition in 151Eu
1
Laboratory of Nuclear Problems, JINR, Dubna, Moscow Region, Russian Federation
2
Institute of Applied Physics, National University, Tashkent, Republic of Uzbekistan
3
Nuclear Physics Institute of the ASCR, CZ-25068, Řež near Prague, Czech Republic
4
Institute of Nuclear Physics, Ibragimov St. 1, 050032, Almaty, Kazakhstan
* e-mail: inoyatov@jinr.ru
Received:
30
November
2015
Revised:
1
April
2016
Accepted:
5
April
2016
Published online:
17
May
2016
Using internal conversion electron spectroscopy, improved energy 21 541.5±0.5 eV was determined for the 21.5keV M1 + E2 nuclear transition in 151Eu populated in the electron capture decay of 151Gd . This value was found to agree well with the present adopted value but is much more accurate. A value of 0.0305±0.0011 derived for the E2 admixture parameter from the measured conversion electron line intensities corresponds to the present adopted value. A possible effect of nuclear structure on the multipolarity of the 21.5 keV transition was also investigated.
© SIF, Springer-Verlag Berlin Heidelberg, 2016