Coulomb dissociation studies as a tool of nuclear astrophysics
Coulomb dissociation studies as a tool of nuclear astrophysics
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库仑解离研究作为核天体物理学的工具
DOI：
10.1088/0954-3899/20/1/005
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
H. Rebel
中科院分区：
文献类型：
--
作者：
G. Baur;H. Rebel
重核的库仑场提供了作用在经过的核粒子上的准真实光子的强烈来源。这一事实在核结构和粒子物理问题的研究中有许多应用。1984年，作为研究辐射俘获过程(时间反转为光解)的一种新方法，人们提出了快速弹丸的库仑解离。这是获得与核天体物理学相关的一类特定低能辐射俘获反应的新途径，它可以克服直接测量的各种限制。从那时起，人们在这一领域进行了各种专门的实验，并取得了许多有趣的结果。对这一方法的现状进行了批判性的回顾，并提出了未来实验和理论研究的方向。在概述了理论基础和基本实验要求后，给出了一些例子。重点讨论了该方法的有利实验条件、分析中的相关理论问题和可能存在的缺陷。讨论了当前和未来应用中与天体物理相关的各种情况。
The Coulomb field of heavy nuclei provides an intense source of quasi-real photons acting on passing nuclear particles. This fact has many applications in studies of problems of nuclear structure and particle physics. In 1984 Coulomb dissociation of fast projectiles was proposed as a novel method to investigate radiative capture processes (time-reversed to photodisintegration). This was a new access to a specific class of radiative capture reactions at low energies, relevant for nuclear astrophysics, and it can overcome various limitations of direct measurements. Since then, various dedicated experiments in this field have been performed and many interesting results have been obtained. The status of this approach is critically reviewed and future directions of experimental and theoretical investigations suggested. After sketching the theoretical basis and the basic experimental requirements, some examples are scrutinized. Emphasis is put on a general discussion of the favourable experimental conditions, of related theoretical problems of the analysis and possible pitfalls of the approach. Various astrophysically relevant cases of current and future applications are discussed.