Effect of target heating on ion-induced reactions in high-intensity laser–plasma interactions

McKenna, P.; Ledingham, K.W.D.; McCanny, T.; Singhal, R.P.; Spencer, I.; Clark, E.L.; Beg, F.N.; Krushelnick, K.; Wei, M.S.; Galy, J.; Magill, J.; Clarke, R.J.; Lancaster, K.L.; Norreys, P.A.; Spohr, K.; Chapman, R.
October 2003
Applied Physics Letters;10/6/2003, Vol. 83 Issue 14, p2763
Academic Journal
Measurements of ion-induced nuclear reactions have been used to diagnose ion acceleration from the interaction of high-intensity (>10[sup 19] W cm[sup -2]) laser light with solid targets. Nuclear activation of catcher materials surrounding the interaction region has been studied using a high-resolution germanium detector. It was found that, when a 100 μm thick Al target foil was preheated, the proton flux produced from the laser–foil interaction was considerably reduced. Observed heavy-ion-induced reactions are used with calculated reaction cross sections to quantify ion acceleration. © 2003 American Institute of Physics.


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