title: Structure formation and tearing of an MeV cylindrical electron beam in a laser-produced plasma.
abstract: The stability of a cylindrical, solid hot electron beam propagating in a high density plasma has been studied using a two-dimensional, hybrid Darwin code. The initially solid beam evolves into a hollow, annular beam due to the Weibel instability and generates strong magnetic fields on both sides of the annular ring. The annular structure subsequently breaks up into several beamlets via a mechanism similar to a tearing instability. It is found that the magnetic fields parallel to the direction of beam propagation also grow due to the tearing process.
authors.affiliation: Department of Electrical Engineering, Setsunan University, Neyagawa, Osaka, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Taguchi
authors.forename: T M
authors.initials: TM
authors.lastname: Antonsen
authors.forename: C S
authors.initials: CS
authors.lastname: Liu
authors.forename: K
authors.initials: K
authors.lastname: Mima