Mechanism of enhanced yield of light particles in compound nucleus formation: Diffusion description

Antonenko, N. V.; Jolos, R. V.

doi:10.1007/bf01301390

Cited by 8 publications

(5 citation statements)

References 6 publications

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“…Then equations of motion contain derivatives of μ RR and μ ηη with respect to R and η. For simplification, we suggest that ∂μ RR /∂R = 0 and ∂μ ηη /∂η = 0, which is justified for the R and η values under study [123,125,126].…”

Section: Asymmetric Dnssmentioning

confidence: 99%

“…To this end, we define the distribution func tion f(R, η, P R , P η , t) of collective coordinates and conjugate momenta. By analogy with [125,127], the…”

Section: Asymmetric Dnssmentioning

confidence: 99%

“…Using (20), we deduce equations of motion for moments of the distribution function f(R, η, P R , P η , t) [125][126][127]. The first and second moments (dΩ = dRdηdP R dP η ), (24) satisfy the following dynamic equations:…”

Section: Asymmetric Dnssmentioning

confidence: 99%

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Dinuclear systems in complete fusion reactions

2014

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Formation and evolution of dinuclear systems in reactions of complete fusion are considered. Based on the dinuclear system concept, the process of compound nucleus formation is studied. Arguments confirming the validity of this concept are given. The main problems of describing the complete fusion in adi abatic approximation are listed. Calculations of evaporation residue cross sections in complete fusion reac tions leading to formation of superheavy nuclei are shown. Isotopic trends of the cross sections of heavy nuclei formation in complete fusion reactions are considered.

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Section: Asymmetric Dnssmentioning

confidence: 99%

“…To this end, we define the distribution func tion f(R, η, P R , P η , t) of collective coordinates and conjugate momenta. By analogy with [125,127], the…”

Section: Asymmetric Dnssmentioning

confidence: 99%

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Dinuclear systems in complete fusion reactions

2014

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“…we solve the Fokker-Planck equation for the distribution function PR;;t within the global momentum approach [7]. The value of t 0 determines the half-life of the DNS which means a maximum interaction time of about t int = 3 , 4t 0 .…”

Section: -Model and Resultsmentioning

confidence: 99%

Competition between complete fusion and quasi-fission in dinuclear system

et al. 1997

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Summary. -A model based on the dinuclear system concept is suggested for the calculation of the competition between complete fusion and quasi-fission in reactions with heavy nuclei. The fusion rate through the inner fusion barrier in mass asymmetry is found by using the Kramers-type expression. The calculated cross-sections for the heaviest nuclei are in a good agreement with the experimental data. The experimentally observed rapid fall-off of the cross-sections of the cold fusion with increasing charge number Z of the compound nucleus is explained. -IntroductionThe competition between the complete fusion and quasi-fission processes occurs in the reactions with massive nuclei at bombarding energies smaller than 15 MeV/nucleon. In these reactions the quasi-fission channel dominates and leads to a strong reduction of few orders of magnitude of the fusion cross-section (1)The capture cross-section c describes the transition of the colliding nuclei over the Coulomb barrier and the formation of the dinuclear system (DNS) when the kinetic energy is transformed into the excitation energy of the DNS. The value of J max corresponds

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“…In investigating relaxation phenomena of the deep inelastic heavy-ion collisions the transport theory [6][7][8][9][10][11] has been proved to be a very successful tool. Based on the early achievements [12] the ME is set up to describe the nucleon transfer in DNS.…”

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confidence: 99%

Fusion probability in heavy-ion collisions by a dinuclear-system model

Wang

et al. 2003

Europhys. Lett.

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In the dinuclear system formed in heavy-ion collisions the nucleon exchange between two touching nuclei is described by solving the Master Equation numerically since the driving force, which contains structure effects, is not linear with mass asymmetry in the diffusion process. The relative motion is treated to couple with the nucleon exchange. All channels of every mass combination between the projectile-like and the target-like may open, and a small fraction of mass distribution probability is found to contribute to the compound nuclear formation of a super heavy nucleus in the very strongly damped reaction process.

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Mechanism of enhanced yield of light particles in compound nucleus formation: Diffusion description

Cited by 8 publications

References 6 publications

Dinuclear systems in complete fusion reactions

Dinuclear systems in complete fusion reactions

Competition between complete fusion and quasi-fission in dinuclear system

Fusion probability in heavy-ion collisions by a dinuclear-system model

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