5th INTERNATIONAL CONFERENCE ON THE FRONTIERS OF PLASMA PHYSICS AND TECHNOLOGY

18-22 April 2011, Singapore, Republic of Singapore


X-RAY PRODUCTION BY LASER-PLASMA INTERACTION

L. Nikzad 1, R. Sadighi-Bonabi 2

1 Laser & Optics Research School, NSTRI, 14399-51113 Tehran, Iran
2 Department of Physics, Sharif University of Technology, 11365-9567 Tehran, Iran


Abstract.  X-ray generation due to interaction of intense short pulse lasers with plasmas is discussed. In this interaction, relativistic electrons and ions can be produced. The energetic plasma electrons can directly produce x-ray beams via betatron oscillations under laser transverse fields. They can also interact with passing through various solid targets such as Mo, Sn, W, and Pb with different thicknesses to produce bremsstrahlung and characteristic x-ray beams. It is shown that shape of energy distributions of electrons can affect on the x-ray generation. The simulated results by MCNP code based on Monte Carlo method, represent that for target thickness larger than specific amount related to each sample, the efficiency of characteristic x-ray generated by quasi-monoenergetic electrons are higher than quasi-Maxwellian profile. Experimental setup for generation of quasi-monoenergetic electrons and x-ray beams are discussed.