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Proceedings Paper

Study of Cu ions acceleration via UV laser ablation
Author(s): F. Belloni; D. Doria; A. Lorusso; Vincenzo Nassisi; Lorenzo Torrisi
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Paper Abstract

In this work an ion acceleration system based on a laser ion source was studied. It was able to generate ion beams utilizing as a source a laser plasma produced by a XeCl laser from a copper target. The focused laser beam provided a power density on the target surface of about 3.5x108 W/cm2. Laser wavelength and pulse duration were 308 nm and 20 ns, respectively. The experimental apparatus consisted substantially of a plasma generation chamber, a drift tube and an expansion chamber mounted on the target stem inside the generation chamber. The expansion chamber end formed the acceleration gap together with a grounded bored electrode, placed in front of it at a distance of 1.3 cm. A Faraday cup placed at the end of the drift tube was used to reveal the ion intensity. Many attempts were done in order to accelerate plasma ions without the expansion chamber, but arcs were present. The maximum accelerating voltage applied to the extraction gap was 18 kV, resulting in an ion bunch of about 4.2 nC and a peak current of 220 μA.

Paper Details

Date Published: 23 March 2005
PDF: 4 pages
Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); doi: 10.1117/12.611335
Show Author Affiliations
F. Belloni, INFN (Italy)
Univ. degli Studi di Lecce (Italy)
D. Doria, INFN (Italy)
Univ. degli Studi di Lecce (Italy)
A. Lorusso, INFN (Italy)
Univ. degli Studi di Lecce (Italy)
Vincenzo Nassisi, INFN (Italy)
Univ. degli Studi di Lecce (Italy)
Lorenzo Torrisi, Univ. degli Studi di Messiha (Italy)
INFN, Lab. Nazionale del Sud (Italy)

Published in SPIE Proceedings Vol. 5777:
XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers
Jarmila Kodymova, Editor(s)

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