Abstract
The measurements reported here provide scaling laws for the ion acceleration process in the regime of ultrashort (50 fs), ultrahigh contrast (10) and ultrahigh intensity (> 10W/cm ), never investigated previously. The scaling of the accelerated ion energies was studied by varying a number of parameters such as target thickness (down to 10nm), target material (C and Al) and laser light polar- ization (circular and linear) at 35° and normal laser incidence. A twofold increase in proton energy and an order of magnitude enhancement in ion flux have been observed over the investigated thickness range at 35° angle of incidence. Further- more, at normal laser incidence, measured peak proton energies of about 20 MeV are observed almost independently of the target thickness over a wide range (50nm- 10 µm). 1.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the International School of Physics "Enrico Fermi" |
| Pages | 213-220 |
| Number of pages | 8 |
| Volume | 179 |
| DOIs | |
| Publication status | Published - 01 Jan 2012 |
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