Stuttgart 2012 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 50: Interaction of matter with ions

A 50.5: Vortrag

Freitag, 16. März 2012, 15:00–15:15, V57.05

Dense monoenergetic proton beams from chirped laser-plasma interaction — •Benjamin J. Galow¹, Yousef I. Salamin^1,2, Tatyana V. Liseykina³, Zoltán Harman^1,4, and Christoph H. Keitel¹ — ¹Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69029 Heidelberg, Germany — ²Department of Physics, American University of Sharjah, POB 26666, Sharjah, United Arab Emirates — ³Institut für Physik, Universität Rostock, 18051 Rostock, Germany — ⁴ExtreMe Matter Institute EMMI, Planckstrasse 1, 64291 Darmstadt, Germany

Interaction of a frequency-chirped laser pulse with single protons and a hydrogen gas target is studied analytically and by means of particle-in-cell simulations, respectively. Feasibility of generating ultra-intense (10⁷ particles per bunch) and phase-space collimated beams of protons (energy spread of about 1%) is demonstrated. Phase synchronization of the protons and the laser field, guaranteed by the appropriate chirping of the laser pulse, allows the particles to gain sufficient kinetic energy (around 250 MeV) required for such applications as hadron cancer therapy, from state-of-the-art laser systems of intensities of the order of 10²¹ W/cm² [1]. 1mm