Quantitative analysis of proton imaging measurements of laser-induced plasmas - École polytechnique Accéder directement au contenu
Article Dans Une Revue Applied Physics B - Laser and Optics Année : 2005

Quantitative analysis of proton imaging measurements of laser-induced plasmas

Résumé

A method for obtaining quantitative information about electric field and charge distributions from proton imaging measurements of laser-induced plasmas is presented. A parameterised charge distribution is used as target plasma. The deflection of a proton beam by the electric field of such a plasma is simulated numerically as well as the resulting proton density, which will be obtained on a screen behind the plasma according to the proton imaging technique. The parameters of the specific charge distributions are delivered by a combination of linear regression and nonlinear fitting of the calculated proton density distribution to the measured optical density of a radiochromic film screen changed by proton exposure. It is shown that superpositions of spherical Gaussian charge distributions as target plasma are sufficient to simulate various structures in proton imaging measurements, which makes this method very flexible.

Dates et versions

hal-00508721 , version 1 (05-08-2010)

Identifiants

Citer

T. Repsilber, M. Borghesi, J.-C. Gauthier, K. Löwenbrück, Alison C. Mackinnon, et al.. Quantitative analysis of proton imaging measurements of laser-induced plasmas. Applied Physics B - Laser and Optics, 2005, 80 (7), pp.905-913. ⟨10.1007/s00340-005-1800-y⟩. ⟨hal-00508721⟩
104 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More