On generation of collimated high-power gamma beams

Abstract

We consider spontaneous thermalization of free photon field~in a vacuum! due to self-interaction, mediated by the virtual e Ϫ e ϩ field at ultra-high concentrations of the electromagnetic energy. That nonlinear, attractive, short-range interaction between photons triggers spontaneous evolution of the initial, low-frequency spectrum toward the maximumentropy spectral distribution peaking in the gamma range of frequencies. Collimation and the total power of the photon beam~pulse! are hardly affected by the process of spontaneous thermalization. We estimate the threshold intensity that triggers spectral evolution of the photon field, the necessary power of the laser beam, the minimum size of the interaction region, parameters of the fully thermalized photon field, and discuss the near-threshold behavior of the electromagnetic field. Possible applications of thermalized photon beams are suggested, for example, they can serve as the pump field to attain gamma-lasing or facilitate ignition in the fusion pellet.

The evaluation of transmutation of hazardous nuclear waste of 90Sr, into valuable nuclear medicine of 89Sr by ultraintense lasers

“…The laser-matter interaction meets the high energy physics in laser-plasma accelerators in generating highly collimated bright X/g-ray sources (Giulietti et al, 2005;Chyla, 2006;Bessonov et al, 2008) and the production of thick ion blocks (Glowacz, 2006;Yazdani et al, 2009;Hora, 2009;Azizi et al, 2009;Hora et al, 2009). The laser-matter interaction meets the high energy physics in laser-plasma accelerators in generating highly collimated bright X/g-ray sources (Giulietti et al, 2005;Chyla, 2006;Bessonov et al, 2008) and the production of thick ion blocks (Glowacz, 2006;Yazdani et al, 2009;Hora, 2009;Azizi et al, 2009;Hora et al, 2009).…”

The effects of circularly polarized laser pulse on generated electron nano-bunches in oscillating mirror model

“…The recent rapid advances in ultra-intense short pulse lasers and their numerous applications stimulated the research activities in this field such as generation of high energy electron and ion beams and their acceleration (Kawata et al, 2005;Mangles et al, 2006;Chyla, 2006;Bessonov et al, 2008;Sadighi-Bonabi et al, 2010sc, 2011 mono-energetic electron beam (Glinec et al, 2005;Zobdeh et al, 2008;Sadighi-Bonabi et al, 2009a;2010a;2010b), monoenergetic ion beam generation (Badziak, 2005), X-ray emission (Nikzad et al, 2012), high harmonic generation, and X-ray lasers (L'Huillier et al, 1993). Among all possible applications of laser, produced X-rays are useful for inertial confinement fusion (ICF) (Keith Matzen et al, 2005;Yazdani et al, 2009;Sadighi-Bonabi et al, 2010d), which is the most challenging problem.…”