Effects of laser prepulses on laser-induced proton generation
- Batani, D.
- Jafer, R.
- Veltcheva, M.
- Dezulian, R.
- Lundh, O.
- Lindau, F.
- Persson, A.
- Osvay, K.
- Wahlström, C-G
- Carroll, D. C.
- McKenna, P.
- Flacco, A.
- Malka, V.
DOIAbstract
Low-intensity laser prepulses (<10(13) W cm(-2), nanosecond duration) are a major issue in experiments on laser-induced generation of protons, often limiting the performances of proton sources produced by high-intensity lasers (approximate to 10(19) W cm(-2), picosecond or femtosecond duration). Depending on the intensity regime, several effects may be associated with the prepulse, some of which are discussed in this paper: (i) destruction of thin foil targets by the shock generated by the laser prepulse; (ii) creation of preplasma on the target front side affecting laser absorption; (iii) deformation of the target rear side; and (iv) whole displacement of thin foil targets affecting the focusing condition. In particular, we show that under...
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