Nuclear structure effects in quasifission – understanding the formation of the heaviest elements

Hinde D. J.; Williams E.; Mohanto G.; Simenel C.; Jeung D. Y.; Dasgupta M.; Prasad E.; Wakhle A.; Vo-Phuoc K.; Carter I. P.; Cook K. J.; Luong D. H.; Palshetkar C. S.; Rafferty D. C.; Simpson E. C.

doi:10.1051/epjconf/201612303005

EPJ Web of Conferences (Jan 2016)

Nuclear structure effects in quasifission – understanding the formation of the heaviest elements

Hinde D. J.,
Williams E.,
Mohanto G.,
Simenel C.,
Jeung D. Y.,
Dasgupta M.,
Prasad E.,
Wakhle A.,
Vo-Phuoc K.,
Carter I. P.,
Cook K. J.,
Luong D. H.,
Palshetkar C. S.,
Rafferty D. C.,
Simpson E. C.

Affiliations

Hinde D. J.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Williams E.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Mohanto G.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Simenel C.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Jeung D. Y.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Dasgupta M.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Prasad E.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Wakhle A.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Vo-Phuoc K.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Carter I. P.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Cook K. J.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Luong D. H.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Palshetkar C. S.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Rafferty D. C.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University
Simpson E. C.: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University

DOI: https://doi.org/10.1051/epjconf/201612303005
Journal volume & issue: Vol. 123
p. 03005

Abstract

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Quasifission is an important process suppressing the fusion of two heavy nuclei in reactions used to create superheavy elements. Quasifission results in rapid separation of the dinuclear system initially formed at contact. Achieving reliable a priori prediction of quasifission probabilities is a very diffcult problem. Through measurements with projectiles from C to Ni, the Australian National University’s Heavy Ion Accelerator Facility and CUBE spectrometer have been used to map out mass-angle distributions (MAD) - the fission mass-ratio as a function of centre-of-mass angle. These provide information on quasifission dynamics in the least modeldependent way. Average quasifission time-scales have been extracted, and compared with TDHF calculations of the collisions, with good agreement being found. With the baseline information from the survey of experimental MAD, strong influences of the nuclear structure of the projectile and target nuclei can be clearly determined.

Published in EPJ Web of Conferences

ISSN: 2100-014X (Online)
Publisher: EDP Sciences
Country of publisher: France
LCC subjects: Science: Physics
Website: http://www.epj-conferences.org/

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