Threshold energy for sub-barrier fusion hindrance phenomenon

V. V. Sargsyan; G. G. Adamian; N. V. Antonenko; W. Scheid; H. Q. Zhang

doi:10.1140/epja/i2013-13019-6

EPJ

Threshold energy for sub-barrier fusion hindrance phenomenon

V. V. Sargsyan¹^,2, G. G. Adamian¹^*, N. V. Antonenko¹, W. Scheid³ and H. Q. Zhang⁴

¹ Joint Institute for Nuclear Research, 141980, Dubna, Russia
² International Center for Advanced Studies, Yerevan State University, 0025, Yerevan, Armenia
³ Institut für Theoretische Physik der Justus-Liebig-Universität, D-35392, Giessen, Germany
⁴ China Institute of Atomic Energy, 102413, Beijing, China

Received: 7 December 2012
Revised: 10 January 2013
Accepted: 15 January 2013
Published online: 8 February 2013

Abstract

The relationship between the threshold energy for a deep sub-barrier fusion hindrance phenomenon and the energy at which the regime of interaction changes (the turning-off of the nuclear forces and friction) in the sub-barrier capture process is studied within the quantum diffusion approach. The quasielastic barrier distribution is shown to be a useful tool to clarify whether the slope of capture cross section changes at sub-barrier energies.