Isomeric fission yield ratios for odd-mass Cd and In isotopes using the phase-imaging ion-cyclotron-resonance technique
Rakopoulos, V., Lantz, M., Pomp, S., Solders, A., Al-Adili, A., Canete, L., Eronen, T., Jokinen, A., Kankainen, A., Mattera, A., Moore, I., Nesterenko, D., Reponen, M., Rinta-Antila, S., de Roubin, A., Vilén, M., Österlund, M., & Penttilä, H. (2019). Isomeric fission yield ratios for odd-mass Cd and In isotopes using the phase-imaging ion-cyclotron-resonance technique. Physical Review C, 99(1), Article 014617. https://doi.org/10.1103/PhysRevC.99.014617
Published inPhysical Review C
Pomp, S. |
© 2019 American Physical Society
Isomeric yield ratios for the odd-A isotopes of 119–127Cd and 119–127In 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 Jrms 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 Jrms display a linear relationship when compared with the electric quadrupole moments of the fission products. ...
PublisherAmerican Physical Society
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Related funder(s)Academy of Finland; European Commission
Funding program(s)Research post as Academy Research Fellow, AoF; Research costs of Academy Research Fellow, AoF; FP7 (EU's 7th Framework Programme)
The content of the publication reflects only the author’s view. The funder is not responsible for any use that may be made of the information it contains.
Additional information about fundingThis work was supported by the European Commission within the Seventh Framework Programme through Fission-2013-CHANDA (Project No. 605203), the Swedish Radiation Safety Authority (SSM), the Swedish Nuclear Fuel and Waste Management Co. (SKB), and the Academy of Finland under the Finnish Centre of Excellence Programme 2012–2017 (Nuclear and Accelerator Based Physics Research at JYFL). A.K. acknowledges support from Academy of Finland under Projects No. 275389, No. 284516, and No. 312544. T.E. acknowledges support from Academy of Finland under Project No. 295207. We would like to thank Professor D. Rudolph and his group for providing us the data for 127Cd. ...
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