论文标题
ISM和宇宙射线粒子对相对论航天器的影响
Radiation Effects from ISM and Cosmic Ray Particle Impacts on Relativistic Spacecraft
论文作者
论文摘要
相对论的航天器，就像NASA星光计划和突破性星际计划所提出的那样，与常规航天器相比，这是独一无二的辐射产量。在相对论的星际航天器的参考框架中，星际介质（ISM）看起来像是一个几乎单一的带电颗粒的单一仪，会撞击航天器的前沿。撞击后，ISM质子和电子将通过航天器屏蔽层传播特征长度，并通过电子和核停止机制停止。结果，将在航天器屏蔽层内产生Bremsstrahlung光子。在这项工作中，我们讨论了星际环境及其对相对论航天器的辐射损害的影响。我们还根据机载设备辐射公差探讨了预期的辐射剂量。
Relativistic spacecraft, like those proposed by the NASA Starlight program and the Breakthrough Starshot Initiative, will have to survive radiation production that is unique when compared to that experienced by conventional spacecraft. In a relativistic interstellar spacecraft's reference frame, the interstellar medium (ISM) will look like a nearly mono-energetic beam of charged particles which impinges upon the leading edge of the spacecraft. Upon impact, ISM protons and electrons will travel characteristic lengths through the spacecraft shield and come to a stop via electronic and nuclear stopping mechanisms. As a result, bremsstrahlung photons will be produced within the spacecraft shield. In this work, we discuss the interstellar environment and its implications for radiation damage on relativistic spacecraft. We also explore expected radiation doses in terms of on-board device radiation tolerance.
