FAST-ELECTRON DEPOSITION IN LASER SHOCK-COMPRESSED PLASTIC TARGETS

We present the first results of fast electron deposition in a laser sh ock compressed plasma. The interaction of a 3 ps, 15 J laser pulse wit h solid polyethylene targets is used to produce fast electrons on one side of foil targets and a 2 ns duration laser pulse is used to drive a shock wave into the target from the opposite side. K-alpha emission from chlorine fluor buried layers is used to measure the electron tran sport. The hot electron range in the shock compressed plastic is found to be approximately twice as large as the range in the solid density plastic.