Scaling of nonthermal ion energy in laserhyphen;generated plasma

摘要

Plasma was generated by focusing a 1.06hyphen;mgr;m 35hyphen;psec laser pulse obliquely onto a solid surface at the optimum resonance absorption angle. The scaling of nonthermal ion emission energy with laser intensity was determined. A computer model for resonance absorption showed nonthermal ion emission to be due to electron acceleration by a resonantly driven electrostatic field.