Generation of Ultrahigh-Velocity Ionizing Shocks with Petawatt-Class Laser Pulses

Nilson, P. M. and Mangles, S. P. D. and Willingale, L. and Kaluza, M. C. and Thomas, A. G. R. and Tatarakis, M. and Najmudin, Z. and Clarke, R. J. and Lancaster, K. L. and Karsch, S. and Schreiber, J. and Evans, R. G. and Dangor, A. E. and Krushelnick, K. (2009) Generation of Ultrahigh-Velocity Ionizing Shocks with Petawatt-Class Laser Pulses. Physical review letters, 103 (25). ISSN 0031-9007

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Abstract

Ultrahigh-velocity shock waves (similar to 10 000 km/s or 0.03c) are generated by focusing a 350-TW laser pulse into low-density helium gas. The collisionless ultrahigh-Mach-number electrostatic shock propagates from the plasma into the surrounding gas, ionizing gas as it becomes collisional. The shock undergoes a corrugation instability due to propagation of the ionizing shock within the gas (the Dyakov-Kontorovich instability). This system may be relevant to the study of very high-Mach-number ionizing shocks in astrophysical situations.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
81930
Deposited By:
Deposited On:
08 Oct 2016 04:09
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 09:44