Fusion of 9Li with 208Pb

被引：31

作者：

Vinodkumar, A. M. ^{[1
]}

Loveland, W. ^{[1
]}

Sprunger, P. H. ^{[1
]}

Prisbrey, L. ^{[1
]}

Trinczek, M. ^{[2
]}

Dombsky, M. ^{[2
]}

Machule, P. ^{[2
]}

Kolata, J. J. ^{[3
]}

Roberts, A. ^{[3
]}

机构：

[1] Oregon State Univ, Dept Chem, Corvallis, OR 97331 USA

[2] TRIUMF, Vancouver, BC V6T 2A3, Canada

[3] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA

来源：

PHYSICAL REVIEW C | 2009年 / 80卷 / 05期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

SUBBARRIER FUSION; BARRIER; PROBABILITY; ENERGIES; NUCLEUS; BREAKUP;

D O I：

10.1103/PhysRevC.80.054609

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We have measured the fusion excitation function for the Li-9+Pb-208 reaction for near-barrier projectile center-of-mass energies of 23.9 to 43.0 MeV using the ISAC2 facility at TRIUMF. The alpha-emitting evaporation residues (At211-214) were stopped in the Pb-208 target, and their decay was measured. The isotopic yields at each energy were in good agreement with the predictions of a statistical model code (HIVAP). The measured fusion excitation function shows evidence for substantial sub-barrier fusion enhancement not predicted by current theoretical models. There is a suppression of the above barrier cross sections relative to these model predictions. The implications of this measurement for studying the fusion of Li-11 with Pb-208 are discussed.

引用

页数：6

共 50 条

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