Damped Nuclear Reactions

“…Such events represent the transition between deep-inelastic collisions (DIC) and complete fusion. In DIC the entrance channel mass-asymmetry is preserved, but there can be large dissipation of kinetic energy and angular momentum [8]. CN formation, in contrast, is characterized by equilibration of all degrees of freedom, and hence completes loss of identity of the entrance channel.…”

Section: Introductionmentioning

confidence: 99%

Fusion probability and survivability in estimates of heaviest nuclei production

Sagaidak

2012

EPJ Web of Conferences

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Abstract. Production of the heavy and heaviest nuclei (from Po to the region of superheavy elements close to Z=114 and N=184) in fusion-evaporation reactions induced by heavy ions has been considered in a systematic way within the framework of the barrier-passing model coupled with the statistical model (SM) of de-excitation of a compound nucleus (CN). Excitation functions for fission and evaporation residues (ER) measured in very asymmetric combinations can be described rather well. One can scale and fix macroscopic (liquid-drop) fission barriers for nuclei involved in the calculation of survivability with SM. In less asymmetric combinations, effects of fusion suppression caused by quasi-fission (QF) are starting to appear in the entrance channel of reactions. QF effects could be semi-empirically taken into account using fusion probabilities deduced as the ratio of measured ER cross sections to the ones obtained in the assumption of absence of the fusion suppression in corresponding reactions. SM parameters (fission barriers) obtained at the analysis of a very asymmetric combination leading to the production of (nearly) the same CN should be used for this evaluation.

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“…The experimentally measured charge, mass, and isotopic distributions of reaction products carry important information about both the reaction mechanism and the interfacing structure of nuclei and reaction dynamics [1][2][3][4][5][6][7]. One of such interesting experimental findings in the binary heavy-ion reactions is the persistence of the odd-even staggering in the charge distributions of reaction products at relatively high bombarding energies [3,5,6].…”

Section: Introductionmentioning

confidence: 99%

Description of the Fusion-Fission Reactions in the Framework of Dinuclear System Conception

Kalandarov

Adamian

Antonenko

et al. 2016

EPJ Web of Conferences

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Within the dinuclear system model fusion-fission reactions 78 Kr+ 40 Ca and 86 Kr+ 48 Ca is investigated. The charge distributions of the decay products are predicted at bombarding energy 10 MeV/nucleon. The competition is treated between complete fusion followed by the decay of compound nucleus and quasifission channels. The possible explanation of the odd-even staggering in the yield of the final reaction products at high excitation energies is discussed.

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Damped Nuclear Reactions

Cited by 38 publications

References 814 publications

The excitation of an independent-particle gas—classical or quantal—by a time-dependent potential well

The excitation of an independent-particle gas—classical or quantal—by a time-dependent potential well

Fusion probability and survivability in estimates of heaviest nuclei production

Description of the Fusion-Fission Reactions in the Framework of Dinuclear System Conception

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