Journal Article

PreJuSER-1101

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spectral shaping of laser generated proton beams

Pfotenhauer, S. M. ; Jäckel, O. ; Sachtleben, A. ; Polz, J. ; Ziegler, W. ; Schlenvoigt, H.-P. ; Amthor, K.-U. ; Kaluza, M. C. ; Ledingham, K. W. D. ; Sauerbrey, R. ; Gibbon, P.FZJ* ; Robinson, A. P. L. ; Schwoerer, H.

2008
Dt. Physikalische Ges. [Bad Honnef]

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Please use a persistent id in citations: http://hdl.handle.net/2128/28987  doi:10.1088/1367-2630/10/3/033034

Abstract: The rapid progress in the field of laser particle acceleration has stimulated a debate about the promising perspectives of laser based ion beam sources. For a long time, the beams produced exhibited quasi-thermal spectra. Recent proof-of-principle experiments demonstrated that ion beams with narrow energy distribution can be generated from special target geometries. However, the achieved spectra were strongly limited in terms of monochromacity and reproducibility. We show that microstructured targets can be used to reliably produce protons with monoenergetic spectra above 2MeV with less than 10% energy spread. Detailed investigations of the effects of laser ablation on the target resulted in a significant improvement of the reproducibility. Based on statistical analysis, we derive a scaling law between proton peak position and laser energy, underlining the suitability of this method for future applications. Both the quality of the spectra and the scaling law are well reproduced by numerical simulations.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Jülich Supercomputing Centre (JSC)

Research Program(s):

1. Scientific Computing (P41)

Appears in the scientific report 2008

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Database coverage:

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