Diagnosing the dynamics of fast electron transport with self induced magnetic fields

A.S. Sandhu; S. Kahaly; G.R. Kumar; S. Sengupta; A. Das; P.K. Kaw

doi:doi:10.1051/jp4:2006133111

Numéro		J. Phys. IV France Volume 133, June 2006


Page(s)		537 - 541
DOI		https://doi.org/10.1051/jp4:2006133111
Publié en ligne		16 juin 2006

Inertial Fusion Sciences and Applications 2005
J.-C. Gauthier, et al.
J. Phys. IV France 133 (2006) 537-541
DOI: 10.1051/jp4:2006133111

Diagnosing the dynamics of fast electron transport with self induced magnetic fields

A.S. Sandhu^{1, 0}, S. Kahaly¹, G.R. Kumar¹, S. Sengupta¹, A. Das¹ and P.K. Kaw²

¹ Tata Institute of Fundamental Research, 1 Homi Bhabha Road, Mumbai 400005, India
² Institute for Plasma Research, Bhat, Gandhinagar 382428, India

Abstract
We offer a new method to study the transport of fast electrons in dense, hot media. The technique relies on temporal profiling of the laser induced magnetic fields and offers a unique capability to map the hot electron currents and their neutralization (or lack of it) by the return currents in the plasma. We report direct quantitative measurements of strong electric inhibition in insulators and turbulence induced anomalous stopping of hot electrons in conductors.