High Power Laser Science and Engineering, 2018, 6 (3): 03000e39, Published Online: Aug. 28, 2018  

Conceptual design of an experiment to study dust destruction by astrophysical shock waves Download: 584次

Author Affiliations
1 General Atomics, 3550 General Atomics Court, San Diego, CA 92121, USA
2 Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
3 Observational Cosmology Lab, Code 665, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
4 Climate and Space Science and Engineering, University of Michigan, Ann Arbor, MI 48109, USA
5 Department of Physics, University of California, Berkeley, CA 94720, USA
6 Lawrence Livermore National Laboratory, Livermore, CA 94450, USA
Abstract
A novel laboratory experimental design is described that will investigate the processing of dust grains in astrophysical shocks. Dust is a ubiquitous ingredient in the interstellar medium (ISM) of galaxies; however, its evolutionary cycle is still poorly understood. Especially shrouded in mystery is the efficiency of grain destruction by astrophysical shocks generated by expanding supernova remnants. While the evolution of these remnants is fairly well understood, the grain destruction efficiency in these shocks is largely unknown. The experiments described herein will fill this knowledge gap by studying the dust destruction efficiencies for shock velocities in the range (), at which most of the grain destruction and processing in the ISM takes place. The experiments focus on the study of grain–grain collisions by accelerating small () dust particles into a large ( diameter) population; this simulates the astrophysical system well in that the more numerous, small grains impact and collide with the large population. Facilities that combine the versatility of high-power optical lasers with the diagnostic capabilities of X-ray free-electron lasers, e.g., the Matter in Extreme Conditions instrument at the SLAC National Accelerator Laboratory, provide an ideal laboratory environment to create and diagnose dust destruction by astrophysically relevant shocks at the micron scale.

M. J.-E. Manuel, T. Temim, E. Dwek, A. M. Angulo, P. X. Belancourt, R. P. Drake, C. C. Kuranz, M. J. MacDonald, B. A. Remington. Conceptual design of an experiment to study dust destruction by astrophysical shock waves[J]. High Power Laser Science and Engineering, 2018, 6(3): 03000e39.

引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!