Comment on ¡°Studying astrophysical collisionless shocks with counterstreaming plasmas from high power lasers¡±

详细信息    查看全文

• 作者：Yu.P. Zakharov ^ki1z@mail.ru
• 关键词：Laboratory astrophysics ; Laser-produced plasmas ; Collisionless interaction and shocks ; Weibel instability ; Ion&ndash ; electron Coulomb collisions
• 刊名：High Energy Density Physics
• 出版年：2012
• 出版时间：December, 2012
• 年：2012
• 卷：8
• 期：4
• 页码：329-330
• 全文大小：105 K

文摘

It is noted that the evaluation of the mean free path of ions by Park et?al. [HEDP 8 (2012), 38-45] is incomplete without taking into account ion-electron collisions for colliding streams of high-speed laser-produced plasmas. As a result, the calculated scale of their interaction, ¡«few mm, can be explained by Coulomb collisions rather than as claimed in the paper, by the formation of a laboratory collisionless shock that simulates astrophysical shocks mediated by a Weibel-like instability. Advantages of CO₂-laser's irradiation and plane targets for such kind of experiments are discussed.