Laser generated proton beam focusing and high temperature isochoric heating of solid matter

Abstract

Freeman, R. R.; Gu, P.; Hatchett, S. P.; Hey, D.; Hill, J.; Key, M. H.; Izawa, Y.; King, J.; Kitagawa, Y.; Kodama, R.; Langdon, A. B.; Lasinski, B. F.; Lei, A.; MacKinnon, A. J.; Patel, P.; Stephens, R.; Tampo, M.; Tanaka, K. A.; Town, R.; Toyama, Y.; Tsutsumi, T.; Wilks, S. C.; Yabuuchi, T.; Zheng, J. Citation Physics of Plasmas.

Isochoric heating of solids by laser-accelerated protons: Experimental characterization and self-consistent hydrodynamic modeling

“…This technique allows one to produce sufficiently large volumes of WDM to permit quantitative observation, thus opening the way for measurements of WDM parameters, stopping power, equation of state etc. Such heating by laser-accelerated proton beams has already been demonstrated [9][10][11][12]. In this paper we present the first comparison between (i) experimental measurements of target expansion induced by laser-accelerated proton heating and (ii) selfconsistent simulations of the same experiment.…”

New micro-cones targets can efficiently produce higher energy and lower divergence particle beams

“…Figure 1a shows the concept of such a target shape and Figure 1b, the simulated target. Shaping the back of flat targets has been demonstrated to focus protons beams Ruhl et al, 2001;Roth et al, 2002aRoth et al, , 2002bPatel et al, 2003;Snavely et al, 2007), it is however the first time that this concept is adapted to a cone geometry in order to use cones as an essential element of the particle beam production and reap the benefits of the increased efficiency of its shape. It does more than a standard flat or curved target.…”

Towards Laser Driven Hadron Cancer Radiotherapy: A Review of Progress

“…Patel et al [62] and Snavely et al [63] were the first to experimentally demonstrate the ballistic focusing capability of curved target surfaces.…”

“…Inserts show the first copper piece in each stack containing proton spatial information [32]. It should be pointed out that, if radioactivity in activation stacks is used as a proton diagnostic then, to be an unambiguous diagnostic for protons, the nuclear reaction must be identified, e.g., using Cu activation stacks the 63 Cu(p,n) 62 Cu with a 10 min half-life was measured. A number of authors have used just a general radioactive measurement as a diagnostic which unfortunately also includes neutron and photon activated sources of radioactivity.…”