Measurement of fission yields and isomeric yield ratios at IGISOL

Pomp, Stephan; Mattera, Andrea; Rakopoulos, Vasileios; Al-Adili, Ali; Lantz, Mattias; Solders, Andreas; Jansson, Kaj; Prokofiev, Alexander; Eronen, Tommi; Gorelov, Dmitry; Jokinen, Ari; Kankainen, Anu; Moore, Iain; Penttilä, Heikki; Rinta-Antila, Sami

doi:10.1051/epjconf/201816900017

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Pomp, S., Mattera, A., Rakopoulos, V., Al-Adili, A., Lantz, M., Solders, A., Jansson, K., Prokofiev, A., Eronen, T., Gorelov, D., Jokinen, A., Kankainen, A., Moore, I., Penttilä, H., & Rinta-Antila, S. (2018). Measurement of fission yields and isomeric yield ratios at IGISOL. In F.-J. Hambsch, N. Carjan, & I. Ruskov (Eds.), Scientific Workshop on “Nuclear Fission Dynamics and the Emission of Prompt Neutrons and Gamma Rays“ (Theory-4) (Article 00017). EDP Sciences. EPJ Web of Conferences, 169. https://doi.org/10.1051/epjconf/201816900017

Päivämäärä

2018

Oppiaine

Kiihdytinlaboratorio Accelerator Laboratory

Tekijänoikeudet

Data on fission yields and isomeric yield ratios (IYR) are tools to study the fission process, in particular the generation of angular momentum. We use the IGISOL facility with the Penning trap JYFLTRAP in Jyväskylä, Finland, for such measurements on 232Th and natU targets. Previously published fission yield data from IGISOL concern the 232Th(p,f) and 238U(p,f) reactions at 25 and 50 MeV. Recently, a neutron source, using the Be(p,n) reaction, has been developed, installed and tested. We summarize the results for (p,f) focusing on the first measurement of IYR by direct ion counting. We also present first results for IYR and relative yields for Sn and Sb isotopes in the 128-133 mass range from natU(n,f) based on γ-spectrometry. We find a staggering behaviour in the cumulative yields for Sn and a shift in the independent fission yields for Sb as compared to current evaluations. Plans for the future experimental program on fission yields and IYR measurements are discussed.

Julkaisija

EDP Sciences

Emojulkaisun ISBN

978-2-7598-9031-6

Konferenssi

Scientific workshop on nuclear fission dynamics and the emission of prompt neutrons and gamma rays

Kuuluu julkaisuun

Scientific Workshop on “Nuclear Fission Dynamics and the Emission of Prompt Neutrons and Gamma Rays“ (Theory-4)

ISSN Hae Julkaisufoorumista

2101-6275

Asiasanat

fission fissio isomeria

DOI

https://doi.org/10.1051/epjconf/201816900017

URI

http://urn.fi/URN:NBN:fi:jyu-201803191761

Julkaisu tutkimustietojärjestelmässä

https://converis.jyu.fi/converis/portal/detail/Publication/27953163

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© The Authors, published by EDP Sciences, 2018. This is an open access article distributed under the terms of the Creative Commons License.

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Measurements of independent fission yield distributions in neutron-induced fission at high neutron energies are important for our fundamental understanding of the fission process, and are also relevant for reactor physics ...
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Gao, Z.; Solders, A.; Al-Adili, A.; Cannarozzo, S.; Lantz, M.; Pomp, S.; Beliuskina, O.; Eronen, T.; Geldhof, S.; Kankainen, A.; Moore, I. D.; Nesterenko, D.; Penttilä, H. (American Physical Society (APS), 2023)

Background: Isomeric yield ratios are an important observable in nuclear fission as they can guide model development by providing insight into the angular momentum generation. Furthermore, isomeric yield ratios are important ...