High resolution (He-3,t) experiment on the double-beta decaying nuclei Te-128 and Te-130

Date
2012
Author
Ejiri, H.
Yosoi, M.
Puppe, P.
Lennarz, A.
Adachi, T.
Akimune, H.
Frekers, D.
Fujita, H.
Fujita, Y.
Fujiwara, M.
Grewe, E. -W.
Hatanaka, K.
Hodak, R.
Iwamoto, C.
Khai, N. T.
Okamoto, A.
Okamura, H.
Povinec, P. P.
Suzuki, T.
Tamii, A.
Thies, J. H.
Ganioglu, Ela
Susoy, G.
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Abstract
Gamow-Teller (GT) strength distributions have been investigated in a high-resolution (He-3,t) charge-exchange experiment on the double-beta (beta beta ) decaying nuclei Te-128 and Te-130. The experiment was carried out at the Research Center for Nuclear Physics, Osaka, with a 420-MeV incident He-3 beam and the Grand Raiden magnetic spectrometer. A final-state energy resolution of 35 keV was achieved. The extracted GT strength distributions at low excitation energies in the final nuclei I-128 and I-130 are presented and discussed in the context of the beta beta decay matrix elements for the two tellurium nuclei. The additional neutron pair in Te-130 seems to produce a moderate increase in the fragmentation of the low-energy GT distribution.
URI
http://hdl.handle.net/20.500.12627/72035
https://doi.org/10.1103/physrevc.86.044603
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