球面晶格上经典相变过程中的粒子加速。

IF 2.3 4区 物理与天体物理 Q3 PHYSICS, CONDENSED MATTER
Aidan M Bachmann, P-A Gourdain, Eric G Blackman
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引用次数: 0

摘要

当被压缩时,某些晶格发生相变,这可能使原子核获得显著的动能。为了探索这种现象的动力学,我们开发了一种方法来研究限制在球体上的库仑耦合N体系统,就像在汤姆逊问题中一样。我们初始化N个总硼核为球体表面上的点粒子,允许它们通过带有粘性阻尼项的库仑散射来平衡。为了模拟相变,我们去除Nrm粒子,迫使系统重新排列到一个新的平衡状态。在这个模型中,我们将汤姆逊问题视为一个动力系统,为探索非零度温度如何影响汤姆逊极小值中的结构缺陷提供了一个框架。我们建立了单个粒子达到的平均峰值动能与N和Nrm的比例关系。对于某些N值,我们发现当Nrm从 ;1增加到6时,能量增加了一个数量级。该模型可以帮助设计一个最大限度地提高能量输出的晶格。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Particle acceleration during classical phase transitions on a spherical lattice.

When compressed, certain lattices undergo phase transitions that may allow nuclei to gain significant kinetic energy. To explore the dynamics of this phenomenon, we develop a methodology to study Coulomb coupledN-body systems constrained to a sphere, as in the Thomson problem. We initializeNtotal Boron nuclei as point particles on the surface of the sphere, allowing them to equilibrate via Coulomb scattering with a viscous damping term. To simulate a phase transition, we removeNrmparticles, forcing the system to rearrange into a new equilibrium. With this model, we consider the Thomson problem as a dynamical system, providing a framework to explore how non-zero temperature affects structural imperfections in Thomson minima. We develop a scaling relation for the average peak kinetic energy attained by a single particle as a function ofNandNrm. For certain values ofN, we find an order of magnitude energy gain when increasingNrmfrom 1 to 6. The model may help to design a lattice that maximizes the energy output.

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来源期刊
Journal of Physics: Condensed Matter
Journal of Physics: Condensed Matter 物理-物理:凝聚态物理
CiteScore
5.30
自引率
7.40%
发文量
1288
审稿时长
2.1 months
期刊介绍: Journal of Physics: Condensed Matter covers the whole of condensed matter physics including soft condensed matter and nanostructures. Papers may report experimental, theoretical and simulation studies. Note that papers must contain fundamental condensed matter science: papers reporting methods of materials preparation or properties of materials without novel condensed matter content will not be accepted.
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