Generation of solid-density ultraintense ion beams by a picosecond laser pulse of circular polarization

作者：Jablonski S^*; Badziak J

来源：Review of Scientific Instruments, 2012, 83(2): 02B105.

DOI：10.1063/1.3665965

This contribution reports particle-in-cell numerical studies of deuteron beam acceleration by a picosecond laser pulse of circular polarization. The effect of laser wavelength lambda and the I-L lambda(2) product (I-L is laser intensity) on the ion beam parameters is investigated. It is shown that at the I-L lambda(2) product fixed, the beam parameters (< E-i >, I-i, F-i) as well as the laser-ions energy conversion efficiency quickly increase with a decrease in the laser wavelength and the best results are achieved for a KrF laser (lambda = 0.248 mu m). In particular, a 2-ps KrF laser pulse of I-L lambda(2) similar to 2 x 10(20) Wcm(-2) mu m(2) interacting with a 10-mu m deuteron target produces a quasi-monoenergetic, solid-density deuteron beam of parameters approaching those required for inertial confinement fusion fast ignition.

• 出版日期2012-2