Beta decay of 94Pd and of the 71 s isomer of 94Rh |
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| Authors: | L Batist A Blazhev J Döring H Grawe M Kavatsyuk O Kavatsyuk R Kirchner M La Commara C Mazzocchi I Mukha C Plettner E Roeckl M Romoli |
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| Institution: | (1) St. Petersburg Nuclear Physics Institute, RU-188350 Gatchina, Russia;(2) Department of Physics of the University “Federico II”, I-80126 Napoli, Italy;(3) Gesellschaft für Schwerionenforschung, D-64291 Darmstadt, Germany;(4) University of Sofia, BG-1164 Sofia, Bulgaria;(5) National Taras Shevchenko University of Kyiv, 01033 Kyiv, Ukraine;(6) University of Seville, E-41012 Sevilla, Spain |
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| Abstract: | The β decay of 94Pd and of the 71s isomer of 94Rh was investigated by using total γ-ray absorption techniques. Several levels in 94Rh are established, including a new low-lying isomer characterized by a half-life of 0.48(3)μs and a de-exciting transition
of 55keV. E2 multipolarity is determined for this transition by measuring the intensities of its γ-rays and the characteristic X-rays
from its electron conversion. On the basis of the measured reduced β-decay transition rates to known 94Ru levels and shell model considerations, the spin-parity of the 71s and the 0.48μs isomers of 94Rh is assigned to be (4+) and (2+), respectively. The β-decay strength distributions measured for 94Pd and the 71s isomer of 94Rh yield Q
EC values of 6700(320) and 9750(320)keV for these decays and give evidence for the population of those states below and above
the magic N = 50 gap that belong to both components of the 0g spin-orbit doublet. |
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| Keywords: | 27 60 +j 90≤ A≤ 140 21 10 Hw Spin parity and isobaric spin 21 10 Tg Lifetimes 23 40 -s Beta decay double beta decay electron and muon capture |
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