Evaluation of GEANT4 and COMSOL Multiphysics Coupling Capabilities by Simulation of an Optimized Betavoltaic Battery

Journal of Nuclear Research and Applications Pub Date : 2023-06-22 DOI:10.24200/nst.2023.0622

D. Ghasemabadi, H. Zaki Dizaji, M. Abdollahzadeh

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Abstract

A beta-voltaic battery design can be used to evaluate the functionality of the GEANT4 code and COMSOL Multiphysics software. The spatial distribution of the deposited energy for the beta particles in the semiconductor transducer has been simulated by using the GEANT4 and then, the electron-hole pair generation rate has been obtained. Subsequently, output performances of the battery such as the current-voltage (I–V) characteristics and the maximum electrical power have been determined by using the COMSOL Multiphysics in which the electron-hole pair generation rate from the GEANT4 simulation was utilized as input. Validation is done by considering an optimized planar betavoltaic battery. The results of the current study have been compared with other articles. The results are in good agreement and the relative errors are less than 8%. Our simulation model can be extended to the betavoltaic batteries with other semiconductors and radioactive isotopes and can provide a powerful tool for predicting the output performance and optimizing the betavoltaic batteries.

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GEANT4与COMSOL多物理场耦合性能的优化倍他伏打电池仿真评价

β -伏打电池设计可用于评估GEANT4代码和COMSOL Multiphysics软件的功能。利用GEANT4模拟了β粒子在半导体换能器中沉积能量的空间分布，得到了电子-空穴对的生成速率。随后，利用COMSOL Multiphysics软件，以GEANT4模拟的电子-空穴对生成速率作为输入，确定了电池的输出性能，如电流-电压(I-V)特性和最大电功率。以优化后的平面倍他伏打电池为例进行验证。本研究的结果已与其他文章进行了比较。结果吻合较好，相对误差小于8%。该仿真模型可以推广到其他半导体和放射性同位素的倍他伏电池，为预测倍他伏电池的输出性能和优化倍他伏电池提供了有力的工具。

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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Journal of Nuclear Research and Applications

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