caa a22 4500 467915296 CHVBK 20180406152900.0 cr unu---uuuuu 170328e20060101xx s 000 0 eng 10.1134/S0020441206010039 doi (NATIONALLICENCE)springer-10.1134/S0020441206010039 Coincidence summing in γ-ray spectra and determination of the intensity of weak crossover γ transitions [Elektronische Daten] [S. Vasil'ev, K. Gromov, A. Klimenko, Zh. Samatov, A. Smol'nikov, V. Fominykh, V. Chumin] The intensities of peaks formed in γ-ray spectra by summing the pulses due to coincident cascade γ transitions in radioactive nuclides are used to determine the intensities of weak crossover γ-radiative transitions. A procedure for measuring γ-ray spectra and calculating the intensities of crossover γ transitions is proposed. The dead time of the measuring facility and a decrease in the intensity of cascade γ-ray peaks, caused by their coincidence with the photopeak and the Compton distribution due to the γ-transition-partner in the cascade, are taken into account. This procedure has been tested by measuring γ spectra of 209Tl, 208Tl, 207Bi, and 44Sc decays. It is shown that the proposed technique can be used to observe crossover γ transitions with an intensity as high as ∼5×10−5 per decay. The upper limits on the intensities of crossover γ transitions in decays of 208Tl and 207Bi nuclei have been determined for the first time. Pleiades Publishing, Inc., 2006 29.30.Kv nationallicence Vasil'ev S. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut Gromov K. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut Klimenko A. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut Samatov Zh Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut Smol'nikov A. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut Fominykh V. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut Chumin V. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut Instruments and Experimental Techniques Nauka/Interperiodica 49/1(2006-01-01), 34-40 0020-4412 49:1<34 2006 49 10786 https://doi.org/10.1134/S0020441206010039 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S0020441206010039 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Vasil'ev S. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut NATIONALLICENCE 700 1- Gromov K. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut NATIONALLICENCE 700 1- Klimenko A. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut NATIONALLICENCE 700 1- Samatov Zh Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut NATIONALLICENCE 700 1- Smol'nikov A. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut NATIONALLICENCE 700 1- Fominykh V. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut NATIONALLICENCE 700 1- Chumin V. Dzhelepov Laboratory for Nuclear Problems, Joint Institute for Nuclear Research, ul. Joliot-Curie 6, 141980, Dubna, Moscow oblast, Russia aut NATIONALLICENCE 773 0- Instruments and Experimental Techniques Nauka/Interperiodica 49/1(2006-01-01), 34-40 0020-4412 49:1<34 2006 49 10786 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer