The predicted 10.6 keV transition in Fr-221 from the alpha-decay of Ac-225 revealed

0185673 - UJF-V 20020167 RIV GB eng J - Článek v odborném periodiku
Yakushev, E. A. - Chumin, V. G. - Gorozhankin, VM. - Gromov, KY. - Kovalík, Alojz - Filosofov, D. V. - Norseev, YV. - Yurkova, LV.
The predicted 10.6 keV transition in Fr-221 from the alpha-decay of Ac-225 revealed.
Journal of Physics G-Nuclear and Particle Physics. Roč. 28, č. 3 (2002), s. 463-467. ISSN 0954-3899. E-ISSN 1361-6471
Grant CEP: GA ČR GA202/02/0157
Výzkumný záměr: CEZ:AV0Z1048901
Klíčová slova: electromagnetic transition * electron conversion * alpha-decay
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 1.399, rok: 2002

The low energy electron spectrum from the alpha-decay of Ac-225 has been measured with 20 eV instrumental resolution using an electrostatic spectrometer and radioactive sources prepared by vacuum evaporation. The predicted 10.642(5) keV M1 + < 0.05% E2 nuclear transition in Fr-221 have been revealed. Energies of 26.015(5), 36.660(5), 38.543(3) and 108.37(1) keV nuclear transition in Fr-221 have been essentially improved. Relative intensities of the measured conversion electron lines of these transitions have also been determined.
Trvalý link: http://hdl.handle.net/11104/0082060