ISSN:
1434-601X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract. The very neutron-deficient nuclide 129Pm was produced via the 92Mo(40Ca, p2n) reaction and identified for the first time by using the X- $\gamma $ coincidence in combination with a He jet tape transport system. According to the decay curve of a 99 keV $\gamma $ -ray which corresponds to the known $5/2^{-} \rightarrow 1/2^{-}$ transition in the daughter nucleus 129Nd of the 129Pm decay, the half-life of 129Pm was determined to be 2.4(9) s. Based on the nuclear potential energy surface (PES) calculations, the ground-state spin-parity of 129Pm was predicted as 5/2- which is favorable to feed a 5/2- low-lying state in the daughter nucleus 129Nd via the (EC $ + \beta^{ + }$ ) decay.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1140/epja/i2003-10190-3
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