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Title: Fusion-fission and quasifission in the reactions with heavy ions leading to the formation of Hs

Abstract

Mass and energy distributions of binary reaction products obtained in the reactions {sup 22}Ne+{sup 249}Cf,{sup 26}Mg+{sup 248}Cm,{sup 36}S+{sup 238}U and {sup 58}Fe+{sup 208}Pb leading to Hs isotopes have been measured. At energies below the Coulomb barrier the bimodal fission of Hs*, formed in the reaction {sup 26}Mg+{sup 248}Cm, is observed. In the reaction {sup 36}S+{sup 238}U the considerable part of the symmetric fragments arises from the quasifission process. At energies above the Coulomb barrier the symmetric fragments originate mainly from fusion-fission process for both reactions with Mg and S ions. In the case of the {sup 58}Fe+{sup 208}Pb reaction the quasifission process dominates at all measured energies. The pre- and post-scission neutron multiplicities as a function of the fragment mass have been obtained for the reactions studied.

Authors:
; ; ;  [1]
  1. Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, 141980 Dubna (Russian Federation)
Publication Date:
OSTI Identifier:
22075638
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1491; Journal Issue: 1; Conference: Conference on nuclear structure and dynamics 2012, Opatija (Croatia), 9-13 Jul 2012; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CALIFORNIUM 249 TARGET; COULOMB FIELD; CURIUM 248 TARGET; ENERGY SPECTRA; HASSIUM ISOTOPES; HEAVY ION FUSION REACTIONS; IRON 58 REACTIONS; LEAD 208 TARGET; MAGNESIUM 26 REACTIONS; MULTIPLICITY; NEON 22 REACTIONS; NUCLEAR FRAGMENTATION; QUASI-FISSION; SULFUR 36 REACTIONS; URANIUM 238 TARGET

Citation Formats

Itkis, I. M., Itkis, M. G., Knyazheva, G. N., and Kozulin, E. M. Fusion-fission and quasifission in the reactions with heavy ions leading to the formation of Hs. United States: N. p., 2012. Web. doi:10.1063/1.4764273.
Itkis, I. M., Itkis, M. G., Knyazheva, G. N., & Kozulin, E. M. Fusion-fission and quasifission in the reactions with heavy ions leading to the formation of Hs. United States. doi:10.1063/1.4764273.
Itkis, I. M., Itkis, M. G., Knyazheva, G. N., and Kozulin, E. M. Sat . "Fusion-fission and quasifission in the reactions with heavy ions leading to the formation of Hs". United States. doi:10.1063/1.4764273.
@article{osti_22075638,
title = {Fusion-fission and quasifission in the reactions with heavy ions leading to the formation of Hs},
author = {Itkis, I. M. and Itkis, M. G. and Knyazheva, G. N. and Kozulin, E. M.},
abstractNote = {Mass and energy distributions of binary reaction products obtained in the reactions {sup 22}Ne+{sup 249}Cf,{sup 26}Mg+{sup 248}Cm,{sup 36}S+{sup 238}U and {sup 58}Fe+{sup 208}Pb leading to Hs isotopes have been measured. At energies below the Coulomb barrier the bimodal fission of Hs*, formed in the reaction {sup 26}Mg+{sup 248}Cm, is observed. In the reaction {sup 36}S+{sup 238}U the considerable part of the symmetric fragments arises from the quasifission process. At energies above the Coulomb barrier the symmetric fragments originate mainly from fusion-fission process for both reactions with Mg and S ions. In the case of the {sup 58}Fe+{sup 208}Pb reaction the quasifission process dominates at all measured energies. The pre- and post-scission neutron multiplicities as a function of the fragment mass have been obtained for the reactions studied.},
doi = {10.1063/1.4764273},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1491,
place = {United States},
year = {2012},
month = {10}
}