Evolution of fusion hindrance for asymmetric systems at deep sub-barrier energies

被引：27

作者：

Shrivastava, A. ^{[1
,2
]}

Mahata, K. ^{[1
,2
]}

Pandit, S. K. ^{[1
,2
]}

Nanal, V. ^{[3
]}

Ichikawa, T. ^{[4
]}

Hagino, K. ^{[5
]}

Navin, A. ^{[6
]}

Palshetkar, C. S. ^{[1
]}

Parkar, V. V. ^{[1
]}

Ramachandran, K. ^{[1
,2
]}

Rout, P. C. ^{[1
,2
]}

Kumar, Abhinav ^{[1
]}

Chatterjee, A. ^{[1
]}

Kailas, S. ^{[1
]}

机构：

[1] Bhabha Atom Res Ctr, Div Nucl Phys, Bombay 400085, Maharashtra, India

[2] Homi Bhabha Natl Inst, Bombay 400094, Maharashtra, India

[3] Tata Inst Fundamental Res, DNAP, Bombay 400005, Maharashtra, India

[4] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan

[5] Tohuku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan

[6] CEA DRF CNRS IN2P3, GANIL, Bd Henri Becquerel,BP 55027, F-14076 Caen 5, France

来源：

PHYSICS LETTERS B | 2016年 / 755卷

关键词：

Fusion cross sections; Deep sub-barrier energies; Coupled channels calculations; Adiabatic model; COUPLINGS; BARRIER;

D O I：

10.1016/j.physletb.2016.02.029

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Measurements of fusion cross-sections of Li-7 and C-12 with Pt-198 at deep sub-barrier energies are reported to unravel the role of the entrance channel in the occurrence of fusion hindrance. The onset of fusion hindrance has been clearly observed in C-12 + Pt-198 system but not in Li-7+ Pt-198 system, within the measured energy range. Emergence of the hindrance, moving from lighter (Li-6,Li-7) to heavier (C-12, O-16) projectiles is explained employing a model that considers a gradual transition from a sudden to adiabatic regime at low energies. The model calculation reveals a weak effect of the damping of coupling to collective motion for the present systems as compared to that obtained for systems with heavier projectiles. (C) 2016 The Authors. Published by Elsevier B.V.

引用

页码：332 / 336

页数：5

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