Search for Electron-Capture Delayed Fission in the New Isotope 244Md
Khuyagbaatar, J., Albers, H. M., Block, M., Brand, H., Cantemir, R. A., Di Nitto, A., Düllmann, Ch. E., Götz, M., Götz, S., Heßberger, F. P., Jäger, E., Kindler, B., Kratz, J. V., Krier, J., Kurz, N., Lommel, B., Lens, L., Mistry, A., Schausten, B., . . . Yakushev, A. (2020). Search for Electron-Capture Delayed Fission in the New Isotope 244Md. Physical Review Letters, 125(14), Article 142504. https://doi.org/10.1103/physrevlett.125.142504
Julkaistu sarjassa
Physical Review LettersPäivämäärä
2020Tekijänoikeudet
© 2020 American Physical Society
The electron-capture decay followed by a prompt fission process was searched for in the hitherto unknown most neutron-deficient Md isotope with mass number 244. Alpha decay with α-particle energies of 8.73–8.86 MeV and with a half-life of 0.30+0.19−0.09 s was assigned to 244Md. No fission event with a similar half-life potentially originating from spontaneous fissioning of the short-lived electron-capture decay daughter 244Fm was observed, which results in an upper limit of 0.14 for the electron-capture branching of 244Md. Two groups of fission events with half-lives of 0.9+0.6−0.3 ms and 5+3−2 ms were observed. The 0.9+0.6−0.3 ms activity was assigned to originate from the decay of 245Md. The origin of eight fission events resulting in a half-life of 5+3−2 ms could not be unambiguously identified within the present data while the possible explanation has to invoke previously unseen physics cases.
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American Physical Society (APS)ISSN Hae Julkaisufoorumista
0031-9007Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/42363842
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