Details

Autor(en) / Beteiligte

• Rakopoulos, V.
• Lantz, M.
• Pomp, S.
• Solders, A.
• Al-Adili, A.
• Canete, L.
• Eronen, T.
• Jokinen, A.
• Kankainen, A.
• Mattera, A.
• Moore, I. D.
• Nesterenko, D. A.
• Reponen, M.
• Rinta-Antila, S.
• de Roubin, A.
• Vilén, M.
• Österlund, M.
• Penttilä, H.

Titel

Isomeric fission yield ratios for odd-mass Cd and In isotopes using the phase-imaging ion-cyclotron-resonance technique

Ist Teil von

• Physical review. C, 2019, Vol.99 (1), Article 014617

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Isomeric yield ratios for the odd-A isotopes of Cd119-127 and In119-127 from 25-MeV proton-induced fission on natural uranium have been measured at the JYFLTRAP double Penning trap, by employing the phase-imaging ion-cyclotron-resonance technique. With the significantly improved mass resolution of this novel method isomeric states separated by 140 keV from the ground state, and with half-lives of the order of 500 ms, could be resolved. This opens the door for obtaining new information on low-lying isomers, which are important for nuclear structure, fission, and astrophysics. In the present work the experimental isomeric yield ratios are used for the estimation of the root-mean-square angular momentum J(rms) of the primary fragments. The results show a dependency on the number of unpaired protons and neutrons, where the odd-Z In isotopes carry larger angular momenta. The deduced values of J(rms) display a linear relationship when compared with the electric quadrupole moments of the fission products.