Fission modes in fermium isotopes with Brownian shape-motion model

Martin Albertsson; B. Gillis Carlsson; Thomas Døssing; Peter Möller; Jørgen Randrup; Åberg Sven

doi:10.1051/epjconf/201922301002

EPJ

a
b
c
d
e
ap
st
h
plus
ds
pv
ti
qt
am
n

Proceedings

Open Access

EPJ Web of Conferences 223, 01002 (2019)
https://doi.org/10.1051/epjconf/201922301002

Fission modes in fermium isotopes with Brownian shape-motion model

Martin Albertsson¹^*, B. Gillis Carlsson¹, Thomas Døssing², Peter Möller¹^,3, Jørgen Randrup⁴ and Åberg Sven¹

¹ Mathematical Physics, Lund University, 221 00 Lund, Sweden
² Niels Bohr Institute, DK-2100 Copenhagen Ø, Denmark
³ P. Moller Scientific Computing and Graphics, Inc. P.O. Box 1440, Los Alamos, New Mexico 87544, USA
⁴ Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

^* e-mail: martin.albertsson@matfys.lth.se

Published online: 4 December 2019

Abstract

Fission-fragment mass and total-kinetic-energy distributions following fission of the fermium isotopes ^256,258,260Fm at low excitation energy have been calculated using the Brownian shape-motion model. A transition from asymmetric fission in ²⁵⁶Fm to symmetric fission in ²⁵⁸Fm is obtained. The total-kinetic-energy distributions for the three isotopes show radically different behaviour due to varying contributions from different fission modes, with a double-humped distribution for ²⁵⁸Fm.

© The Authors, published by EDP Sciences, 2019

This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.