Accurate modeling of spacecraft charging is essential to mitigate well‐known and all‐too‐common deleterious and costly effects on spacecraft resulting from charging induced by interactions with the space plasma environment. This paper addresses how limited availability of electron emission and transport properties of spacecraft materials—in particular, secondary electron yields—and the wide ranges measured for such properties pose a critical issue for modeling spacecraft charging. It describes a materials charging database for electron emission properties under development, which facilitates more accurate spacecraft charge modeling when used in concert with the strategies outlined herein. These data and techniques provide tools for more accurate material selection, increased confidence in charge models, and a concomitant decrease in mission risk. They also allow better customization of models in response to prolonged space environment exposure and specific mission requirements, which may evolve materials properties.

中文翻译：

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确定航天器电荷建模的电子产率材料参数的策略

航天器充电的准确建模对于减轻由与空间等离子体环境的相互作用引起的充电对航天器造成的众所周知的和非常常见的有害和昂贵的影响至关重要。本文探讨了航天器材料有限的电子发射和传输特性（尤其是二次电子产率）的可用性以及为此类特性而测量的宽范围如何构成了对航天器充电进行建模的关键问题。它描述了用于开发中的电子发射特性的材料充电数据库，当与本文概述的策略配合使用时，该数据库有助于更精确的航天器电荷建模。这些数据和技术为更准确地选择材料，增加对装药模型的信心并同时降低任务风险提供了工具。