Ion Acceleration by Collisionless Shocks in High-Intensity-Laser–Underdense-Plasma Interaction - Archive ouverte HAL Access content directly
Journal Articles Physical Review Letters Year : 2004

Ion Acceleration by Collisionless Shocks in High-Intensity-Laser–Underdense-Plasma Interaction

(1) , (1) , (1) , (1) , (1) , (1) , (1) , (1, 2) , (1, 2) , (3) , (4) , (4) , (4) , (5) , (5) , (1)
1
2
3
4
5

Abstract

Ion acceleration by the interaction of an ultraintense short-pulse laser with an underdense-plasma has been studied at intensities up to 3×10^20  W/cm^2. Helium ions having a maximum energy of 13.2±1.0  MeV were measured at an angle of 100° from the laser propagation direction. The maximum ion energy scaled with plasma density as n_e^0.70±0.05. Two-dimensional particle-in-cell simulations suggest that multiple collisionless shocks are formed at high density. The interaction of shocks is responsible for the observed plateau structure in the ion spectrum and leads to an enhanced ion acceleration beyond that possible by the ponderomotive potential of the laser alone.
Not file

Dates and versions

hal-00508234 , version 1 (02-08-2010)

Identifiers

Cite

M. S. Wei, S.P.D Mangles, Z. Najmudin, B. Walton, A. Gopal, et al.. Ion Acceleration by Collisionless Shocks in High-Intensity-Laser–Underdense-Plasma Interaction. Physical Review Letters, 2004, 93 (15), pp.155003. ⟨10.1103/PhysRevLett.93.155003⟩. ⟨hal-00508234⟩
102 View
0 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More