Prompt neutron multiplicity from spontaneous fission of Fm

R. S. Mukhin; A. V. Isaev; I. I. Ulanova; A. I. Svirikhin; M. A. Bychkov; M. L. Chelnokov; V. I. Chepigin; H. M. Devaraja; O. Dorvaux; B. Gall; K. Hauschild; I. N. Izosimov; A. A. Kuznetsova; A. Lopez-Martens; O. N. Malyshev; A. G. Popeko; Yu. A. Popov; B. Sailaubekov; E. A. Sokol; M. S. Tezekbayeva; N. I. Zamyatin; A. V. Yeremin

doi:10.1140/epja/s10050-024-01441-0

2024 Impact factor 2.8

Hadrons and Nuclei

Eur. Phys. J. A (2024) 60: 223
https://doi.org/10.1140/epja/s10050-024-01441-0

Regular Article – Experimental Physics

Prompt neutron multiplicity from spontaneous fission of $^{244}$ $^{244}$ Fm

R. S. Mukhin¹^a, A. V. Isaev¹^,2, I. I. Ulanova², A. I. Svirikhin¹^,2, M. A. Bychkov¹, M. L. Chelnokov¹, V. I. Chepigin¹, H. M. Devaraja¹, O. Dorvaux³, B. Gall³, K. Hauschild⁴, I. N. Izosimov¹, A. A. Kuznetsova¹, A. Lopez-Martens⁴, O. N. Malyshev¹^,2, A. G. Popeko¹^,2, Yu. A. Popov¹^,2, B. Sailaubekov¹^,5^,6, E. A. Sokol¹, M. S. Tezekbayeva¹^,5, N. I. Zamyatin¹ and A. V. Yeremin¹^,2

¹ Joint Institute for Nuclear Research, Dubna, Russia
² Dubna State University, Dubna, Russia
³ Université de Strasbourg, CNRS, Strasbourg, France
⁴ IJCLab, IN2P3-CNRS, Université Paris-Saclay, Orsay, France
⁵ Institute of Nuclear Physics, Almaty, Kazakhstan
⁶ L.N. Gumilyov Eurasian National University, Astana, Kazakhstan

^a rmukhin@jinr.ru, rmukhin11@gmail.com

Received: 17 August 2024
Accepted: 25 October 2024
Published online: 13 November 2024

Abstract

This study investigates the prompt fission neutron (PFN) multiplicity distribution in the spontaneous fission (SF) of $^{244}$ $^{244}$ Fm. Experimental data were obtained using the complete fusion reaction $^{206}$ $^{206}$ Pb( $^{40}$ $^{40}$ Ar,2n) $^{244}$ $^{244}$ Fm, obtaining a mean of $3.6 \pm 0.1$ $3.6 \pm 0.1$ emitted neutrons per SF event. The symmetry of the PFN multiplicity distribution suggests no significant influence of additional fission modes, aligning with theoretical predictions that indicate the dominance of the standard fission mode. At the same time, comparison with neighboring isotopes points at a possible additional fission mode in $^{246}$ $^{246}$ Fm.

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Communicated by Robert Janssens.

© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2024

Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.

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