Quantum non-Markovian Langevin formalism for heavy ion reactions near the Coulomb barrier

Journal Article · Fri Feb 15 04:00:00 EST 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.024607· OSTI ID:21068134

Sargsyan, V V; Antonenko, N V ^[1]; Kanokov, Z ^[1]; Adamian, G G ^[1]

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1. Joint Institute for Nuclear Research, RU-141980 Dubna (Russian Federation)

The generalized Langevin approach is suggested to describe the capture inside of the Coulomb barrier of two heavy nuclei at bombarding energies near the barrier. The equations of motion for the relative distance (collective coordinate) between two interacting nuclei are consistent with the generalized quantum fluctuation-dissipation relations. The analytical expressions are derived for the time-dependent non-Markovian microscopic transport coefficients for the stable and unstable collective modes. The calculated results show that the quantum effects in the diffusion process increase with increasing friction or/and decreasing temperature. The capture probability inside of the Coulomb barrier is enhanced by the quantum noise at low energies near the barrier. An increase of the passing probability with dissipation is found at sub-barrier energies.

• OSTI ID: 21068134
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CAPTURE
COULOMB FIELD
DIFFUSION
EQUATIONS OF MOTION
FLUCTUATIONS
HEAVY ION REACTIONS
HEAVY NUCLEI
MARKOV PROCESS
PROBABILITY
TIME DEPENDENCE