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Expansion of tungsten ions emitted from laser-produced plasma in axial magnetic and electric fields

Published online by Cambridge University Press:  05 August 2002

J. WOŁOWSKI
Affiliation:
Institute of Plasma Physics and Laser Microfusion, P.O. Box 49, 23 Hery St., 00-908 Warsaw, Poland
L. CELONA
Affiliation:
INFN—Laboratori Nazionali del Sud, Via S. Sofia 44, 95123 Catania, Italy
G. CIAVOLA
Affiliation:
INFN—Laboratori Nazionali del Sud, Via S. Sofia 44, 95123 Catania, Italy
S. GAMMINO
Affiliation:
INFN—Laboratori Nazionali del Sud, Via S. Sofia 44, 95123 Catania, Italy
J. KRÁSA
Affiliation:
Institute of Physics ASCR, Na Slovance 2, 182 21 Prague 8, Czech Republic
L. LÁSKA
Affiliation:
Institute of Physics ASCR, Na Slovance 2, 182 21 Prague 8, Czech Republic
P. PARYS
Affiliation:
Institute of Plasma Physics and Laser Microfusion, P.O. Box 49, 23 Hery St., 00-908 Warsaw, Poland
K. ROHLENA
Affiliation:
Institute of Physics ASCR, Na Slovance 2, 182 21 Prague 8, Czech Republic
L. TORRISI
Affiliation:
INFN—Laboratori Nazionali del Sud, Via S. Sofia 44, 95123 Catania, Italy
E. WORYNA
Affiliation:
Institute of Plasma Physics and Laser Microfusion, P.O. Box 49, 23 Hery St., 00-908 Warsaw, Poland

Abstract

The experimental results of the investigations on the influence of external magnetic and electric fields on the characteristics of a tungsten ion stream emitted from a plasma produced by the Nd:glass laser (1 J, 1 ns) performed at IPPLM, Warsaw are presented. A negatively biased target up to −15 kV and a magnetic field up to 0.45 T were used in the experiment. A set of ion collectors and an electrostatic cylindrical ion energy analyzer located at small angles with respect to the laser beam axis and at large distances from the target were applied for ion measurements. The effect of an external magnetic field is essential to plasma expansion, but the effect of the retarding potential of the target is very weak in our experimental conditions. The aim of the studies was to prove the possibility of the optimization of ion beam parameters from laser-produced plasma for the particular application as a laser ion source coupled with the electron cyclotron resonance ion source for particle accelerators.

Type
Research Article
Copyright
© 2002 Cambridge University Press

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