Acceleration of ions up to 20MeV/nucleon in the ultrashort, high-intensity regime

R. Prasad, S. Ter-Avetisyan, D. Doria, K.E. Quinn, L. Romagnani, M. Zepf, M. Borghesi, A. Andreev, P.S. Foster, C.M. Brenner, P. Gallegos, D. Neely, J.S. Green, M.J.V. Streeter, D.C. Carroll, O. Tresca, P. McKenna, N.P. Dover, C.A.J. Palmer, J. SchreiberZ. Najmudin

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The measurements reported here provide scaling laws for the ion acceleration process in the regime of ultrashort (50 fs), ultrahigh contrast (10) and ultrahigh intensity (> 10W/cm ), never investigated previously. The scaling of the accelerated ion energies was studied by varying a number of parameters such as target thickness (down to 10nm), target material (C and Al) and laser light polar- ization (circular and linear) at 35° and normal laser incidence. A twofold increase in proton energy and an order of magnitude enhancement in ion flux have been observed over the investigated thickness range at 35° angle of incidence. Further- more, at normal laser incidence, measured peak proton energies of about 20 MeV are observed almost independently of the target thickness over a wide range (50nm- 10 µm). 1.
Original languageEnglish
Title of host publicationProceedings of the International School of Physics "Enrico Fermi"
Pages213-220
Number of pages8
Volume179
DOIs
Publication statusPublished - 01 Jan 2012

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