TITLE

Generation and manipulation of proton beams by ultra-short laser pulses

AUTHOR(S)
Nickles, P. V.; Schnürer, M.; Steinke, S.; Sokollik, T.; Ter-Avetisyan, S.; Andreev, A.; Sandner, W.
PUB. DATE
July 2009
SOURCE
AIP Conference Proceedings;7/25/2009, Vol. 1153 Issue 1, p140
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Applying a 21-channel Thomson spectrometer setup has revealed further insight to the connection between spatial and spectral beam characteristic of laser accelerated protons. Analyzing the central emission cone (plus/minus 3 degree) shows an increasing beam divergency for protons with increasing kinetic energies. This holds for protons emitted from the same source area at the target surface. The whole beam is a well ordered system with a clear functional dependence of trajectories on proton energy. This is a consequence of the source dynamics which is determined by the sheath development in time. Thus laser-driven ion beams can be advantageously manipulated for further propagation to an experiment. We demonstrate this capability with a magnetic quadrupole and obtain a nearly parallel and monochromatized beam. Furthermore we set our achievements in beam production efficiency into context with other laser systems and demonstrate the potential of very-thin target foils.
ACCESSION #
43397911

 

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