Observation of resistive Weibel instability in intense laser plasma

Krishnamurthy, S. and Makur, K. and Ramakrishna, B. (2020) Observation of resistive Weibel instability in intense laser plasma. Laser and Particle Beams, 38 (2). pp. 152-158. ISSN 0263-0346

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Abstract

We observe experimentally periodic proton beam filamentation in laser-produced dense plasma using multilayered (CH-Al-CH) sandwich targets. The accelerated MeV proton beams from these targets exhibit periodic frozen filaments up to 5-10 Âm as a result of resistive Weibel instabilities in the expanding plasma. The evolution of strong self-generated resistive magnetic fields at the targets interface is attributed to such plasma effects, which are supported, by our theory and simulations. We suggest that the resistive Weibel instability could be effectively employed to understand the evolution of magnetic fields in laser-generated plasma in the astrophysics scenario or the advanced fast igniter approach of the inertial confinement fusion.

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IITH Creators:

IITH Creators	ORCiD
Krishnamurthy, S.	UNSPECIFIED
Makur, K.	UNSPECIFIED
Ramakrishna, B.	UNSPECIFIED

Item Type:

Article

Uncontrolled Keywords:

Beam filamentation; Dense plasma; Expanding plasmas; Intense laser; Laser generated plasmas; Multi-layered; Plasma effects; Weibel instability;Astrophysics; Laser produced plasmas; Magnetic fields; Magnetoplasma; Plasma interactions; Plasma stability; Proton beams

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

08 Jul 2021 07:22

Last Modified:

08 Jul 2021 07:22

URI:

http://raiithold.iith.ac.in/id/eprint/8177