Energy-loss process in Ni63 betavoltaic batteries

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-09-10 DOI:10.1016/j.nimb.2024.165526

I. Daouali, A. Belghachi, B. Amiri

引用次数: 0

Abstract

The betavoltaic effect is characterized by multiple random scatterings and high energy density exchange. The conversion of beta-particles’ energy to electric current is a sophisticated process. A GEANT4-based code is used to model the energy-loss mechanisms of emitted electrons from ⁶³Ni radioisotope, considering the physics behind these losses (such as Coulomb scattering, nuclear stopping, and Bethe-Bloch theory) while taking into account self-absorption and backscattering factors. The study indicates the existence of a significant non-ionizing energy-loss of penetrating beta-particles that may stimulate remarkable local heating in the absorbing structure, which results in a degradation in the performance of betavoltaic batteries using ⁶³Ni as nuclear fuel.

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镍63光伏电池的能量损失过程

贝塔效应的特点是多重随机散射和高能量密度交换。β粒子的能量转换为电流是一个复杂的过程。研究使用了基于 GEANT4 的代码来模拟 63Ni 放射性同位素发射电子的能量损耗机制，考虑了这些损耗背后的物理学原理（如库仑散射、核停止和 Bethe-Bloch 理论），同时考虑了自吸收和反向散射因素。研究表明，穿透性β粒子存在大量非电离能量损耗，可能会在吸收结构中引发显著的局部加热，从而导致使用 63Ni 作为核燃料的光伏电池性能下降。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.