https://doi.org/10.1140/epja/i2019-12812-5
Regular Article - Experimental Physics
An experimental investigation of the 15.1 keV M1 + E2 nuclear transition in 227Th from the 
decay of 227Ac
1
Dzhelepov Laboratory of Nuclear Problems, JINR, 141980, Dubna, Moscow Region, Russia
2
Nuclear Physics Institute of the ASCR, CZ-25068, Řež near Prague, Czech Republic
3
Institute of Applied Physics, National University, University Str. 4, 100174, Tashkent, Uzbekistan
* e-mail: inoyatov@jinr.ru
Received:
11
March
2019
Accepted:
21
June
2019
Published online:
22
August
2019
Using the internal conversion electron spectroscopy, the energy of the 15.1 keV 
nuclear transition in 227Th populated in the 
decay of 227Ac was determined to be 
eV. This value is more accurate than the present accepted one by a factor of 200. The present uncertainty in the transition multipolarity was removed and it was found to be with the admixture 
.
© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature, 2019
