209Bi 靶上的 6Li (→α+d) 亚库仑破裂

IF 1.7 4区 物理与天体物理 Q2 PHYSICS, NUCLEAR
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引用次数: 0

摘要

通过使用分段式硅带探测器阵列探测α和d的重合,测量了6Li在209Bi靶核场中解离成α+d的截面,其能量比库仑势垒低约20%。测量到的相对能量 "Eαd "的分布表明,在目前的射束能量下,射弹的解离主要是通过直接破裂进行的,一小部分是通过 3+ 共振态的顺序破裂进行的。Q 值分布表明,事件发生时,残余靶核仍处于基态。在连续离散耦合通道(CDCC)计算框架内分析了测量到的直接破裂截面角分布。描述 α+d 中束缚态波函数尾部振幅的渐近归一化系数(ANC)是从光谱振幅与单粒子渐近归一化系数的变化中得到的。估计的 ANC 参数(2.581 ± 0.212 fm-1/2)与之前在文献中发现的值非常一致。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Sub-Coulomb breakup of 6Li (→α+d) off 209Bi target
Cross section for dissociation of 6Li into α+d in the field of 209Bi target nucleus has been measured at an energy about 20% below the Coulomb barrier by detecting α and d in coincidence using a segmented Si-Strip detector array. Measured distribution of relative energy ‘Eαd’ suggests that the dissociation of the projectile at present beam energy proceeds dominantly through direct breakup and by a small fraction through sequential breakup via 3+ resonance state. The Q-value distribution shows that the events are accompanied by the residual target nuclei remaining at the ground state. Measured angular distributions of direct breakup cross-section are analyzed within the framework of Continuum Discretized Coupled Channel (CDCC) calculations. Asymptotic Normalization Coefficient (ANC) describing the amplitude of the tail of the bound state wave function in α+dis obtained from the variation of spectroscopic amplitude with the Single particle asymptotic normalization coefficient. The estimated ANC parameter (2.581 ± 0.212 fm−1/2) is in excellent agreement with the values previously found in the literature.
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来源期刊
Nuclear Physics A
Nuclear Physics A 物理-物理:核物理
CiteScore
3.60
自引率
7.10%
发文量
113
审稿时长
61 days
期刊介绍: Nuclear Physics A focuses on the domain of nuclear and hadronic physics and includes the following subsections: Nuclear Structure and Dynamics; Intermediate and High Energy Heavy Ion Physics; Hadronic Physics; Electromagnetic and Weak Interactions; Nuclear Astrophysics. The emphasis is on original research papers. A number of carefully selected and reviewed conference proceedings are published as an integral part of the journal.
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