Study of Cu ions acceleration via UV laser ablation

F. Belloni; D. Doria; A. Lorusso; Vincenzo Nassisi; Lorenzo Torrisi

doi:10.1117/12.611335

23 March 2005 Study of Cu ions acceleration via UV laser ablation

F. Belloni, D. Doria, A. Lorusso, Vincenzo Nassisi, Lorenzo Torrisi

Proceedings Volume 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2005) https://doi.org/10.1117/12.611335
Event: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2004, Prague, Czech Republic

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.

Citation Download Citation

F. Belloni, D. Doria, A. Lorusso, Vincenzo Nassisi, and Lorenzo Torrisi "Study of Cu ions acceleration via UV laser ablation", Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); https://doi.org/10.1117/12.611335

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