Circumstantial evidence for a non-Maxwellian plasma from femtosecond laser-matter interaction

Details Circumstantial evidence for a non-Maxwellian plasma from femtosecond laser-matter interaction Circumstantial evidence for a non-Maxwellian plasma from femtosecond laser-matter interaction

2009-09-10

arxiv.org/abs/0909.2048v1

Physics

Plasma Physics

6 pages, 5 figures

Scientific paper

We study ion acceleration mechanisms in laser-plasma interactions using neutron spectroscopy. We consider different types of ion-collision mechanisms in the plasma, which cause the angular anisotropy of the observed neutron spectra. These include the collisions between an ion in the plasma and an ion in the target, and the collisions between two ions in the hot plasma. By analyzing the proton spectra, we suggest that the laser-generated plasma consists of at least two components, one of which collectively accelerated and can also produce anisotropy in the angular distribution of fusion neutrons.

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