Fast photography of a laser generated plasma expanding across a transverse magnetic field

Author

Harilal, S.S. ; Shay, B.O. ; Tillack, M.S. ; Bindhu, C.V. ; Najmabadi, F.

Author_Institution

Center for Energy Res., Univ. of California, La Jolla, CA, USA

Volume

33

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

474

Lastpage

475

Abstract

The dynamics and confinement of laser generated Carbon plumes expanding across a transverse magnetic field have been investigated. 1.06-μm, 8-ns pulses from an Nd:YAG laser were used to create a plasma that was allowed to expand across a 0.64-T magnetic field. Fast photography employing an intensified charged-coupled device was used for two-dimensional imaging of the plume. Photographic studies showed the collapse of the ablation plume after the bubble lifetime, and formation of two lobes near the target surface at later times.

Keywords

carbon; high-speed optical techniques; plasma confinement; plasma magnetohydrodynamics; 0.64 T; 1.06 mum; 8 ns; C; Nd:YAG laser; YAG:Nd; YAl5O12:Nd; ablation plume collapse; bubble lifetime; fast photography; intensified charged-coupled device; laser generated carbon plumes; laser generated plasma expansion; plasma confinement; target surface; transverse magnetic field; two-dimensional imaging; Laser ablation; Magnetic confinement; Magnetic fields; Photography; Plasma accelerators; Plasma confinement; Plasma density; Plasma devices; Plasma temperature; Plasma waves; Fast photography; laser produced plasma; magnetic field; plasma confinement;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2005.844965

Filename

1420533