Ion emission in collisions between two laser-produced plasmas

P Hough (1) , P Hayden (1) , C Fallon (1) , T J Kelly (1) , C Mcloughin (1) , P Yeates (1) , J P Mosnier (1) , E T Kennedy (1) , S S Harilal (2) , J T Costello (1)

1 National Centre for Plasma Science and Technology (NCPST)
2 Center for Materials under Extreme Environment

Measurements of the total ion emission from a pair of colliding laser-produced aluminium plasmas were obtained with the aid of a Faraday cup detector. The energy profile width at half height of the kinetic energy distribution for ions emitted normal to the target was found to be 30% narrower for colliding plasmas compared to a single plasma. Similar to ion emission from single plumes, the mean ion kinetic energy is observed to increase with the energy of the incident laser pulse. However, the width of the ion energy distribution increases at a significantly slower rate than in the single plume case.

Mots clés: Physical Sciences

P Hough, P Hayden, C Fallon, T J Kelly, C Mcloughin, et al.. Ion emission in collisions between two laser-produced plasmas. Journal of Physics D: Applied Physics, 2011, 44 (35), pp.355203. ⟨10.1088/0022-3727/44/35/355203⟩. ⟨hal-00649056⟩