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Fourkal E , Shahine B , Ding M , Li JS , Tajima T , Ma CM
Particle in cell simulation of laser-accelerated proton beams for radiation therapy
Medical Physics. 2002 Dec;29(12) :2788-2798
PMID: ISI:000179970900007 URL: http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=12512712
AbstractIn this article we present the results of particle in cell (PIC) simulations of laser plasma interaction for proton acceleration for radiation therapy treatments. We show that under optimal interaction conditions protons can be accelerated up to relativistic energies of 300 MeV by a petawatt laser field. The proton acceleration is due to the dragging Coulomb force arising from charge separation induced by the ponderomotive pressure (light pressure) of high-intensity laser. The proton energy and phase space distribution functions obtained from the PIC simulations are used in the calculations of dose distributions using the GEANT Monte Carlo simulation code. Because of the broad energy and angular spectra of the protons, a compact particle selection and beam collimation system will be needed to generate small beams of polyenergetic protons for intensity modulated proton therapy. (C) 2002 American Association of Physicists in Medicine.
Notes628BA MED PHYS