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

Puppe, P.; Lennarz, A.; Adachi, T.; Akimune, H.; Ejiri, H.; Frekers, D.; Fujita, H.; Fujita, Y.; Fujiwara, M.; Ganioglu, Ela; Grewe, E.; Hatanaka, K.; Hodak, R.; Iwamoto, C.; Khai, N.; Okamoto, A.; Okamura, H.; Povinec, P.; Susoy, Gülfem; Suzuki, T.; Tamii, A.; Thies, J.; Yosoi, M.

doi:10.1103/physrevc.86.044603

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

Puppe P., Lennarz A., Adachi T., Akimune H., Ejiri H., Frekers D., ...More

PHYSICAL REVIEW C, vol.86, no.4, 2012 (SCI-Expanded)

Publication Type: Article / Article
Volume: 86 Issue: 4
Publication Date: 2012
Doi Number: 10.1103/physrevc.86.044603
Journal Name: PHYSICAL REVIEW C
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Istanbul University Affiliated: Yes

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.