Abstract

We present the results of our experiments at the Luch laser facility in which the processes of the destruction of iron asteroids and cometary nuclei in space by nuclear explosions on their surface are simulated based on the principle of physical similarity. We present the results of our numerical simulations of impacts on the surface of iron objects confirming the similarity of the key processes in the full-scale and model cases. The technologies of fabricating miniature mockups with parameters close to those of iron asteroids and cometary nuclei are described. For various mini-mockups 3–12 mm in size at a laser energy from 50 to 450 J we provide an experimental estimate of the energy threshold for the undeniable destruction of mockups and investigate the parameters of their fragmentation. Conclusions about the probable results of the impact of a nuclear explosion on hazardous cosmic objects have been drawn.

中文翻译：

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核爆炸对冰冷和铁小行星的破坏性影响的激光模拟

摘要

我们介绍了在Luch激光设备上进行的实验结果，在该设备中，根据物理相似性原理模拟了铁小行星和彗星核在其表面被核爆炸所破坏的过程。我们介绍了对铁物体表面的影响的数值模拟结果，证实了在全尺寸和模型情况下关键过程的相似性。描述了制造具有与铁小行星和彗核相似的参数的微型模型的技术。对于从50到450 J的激光能量，各种尺寸为3–12 mm的微型模型，我们提供了对模型不可否认的破坏的能量阈值的实验估计，并研究了其碎片化的参数。