隧道过程和热核聚变的状态依赖性

IF 1.7 4区物理与天体物理 Q2 PHYSICS, NUCLEAR

Nuclear Physics A Pub Date : 2024-01-10 DOI:10.1016/j.nuclphysa.2024.122830

Roberto Onofrio , Carlo Presilla

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引用次数: 0

摘要

我们讨论了隧道过程对量子态初始准备的敏感性。我们比较了使用广义伍兹-撒克逊势的不同位置方差高斯波包的情况，这种势的隧穿系数有分析表达式。我们发现，在与可控能源生产实际相关的温度范围内，通常的平面波近似低估了核聚变反应活性，低估了一个数量级。

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State dependence of tunneling processes and thermonuclear fusion

We discuss the sensitivity of tunneling processes to the initial preparation of the quantum state. We compare the case of Gaussian wave packets of different positional variances using a generalized Woods-Saxon potential for which analytical expressions of the tunneling coefficients are available. Using realistic parameters for barrier potentials we find that the usual plane wave approximation underestimates fusion reactivities by an order of magnitude in a range of temperatures of practical relevance for controlled energy production.

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来源期刊

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.