Power positron beams for High Energy Density physics
In this talk I will discuss the modern theoretical developments and review today situation in power positron beams research, including physical and technical aspects of generation and absorption of the positron beams with GeV particle energy and about (0.01–0.1) A beam current, positive “charge pumping” process, with emphasis on suggestions for some HED (High Energy Density) physics applications: (1) macroparticle accelerator, (2) proton and heavy ion intermediate energy accelerator and (3) soft(about few MeV energy range) gaser. I will also describe the physics and conceptual design of the machines (1)–(3).
Power positron beams as a new branch of beaming research
Some of the most desirable problems in modern physics are impossible to solve at the current stage of technical and technological development. So, the main role today should belong to theoretical research aimed at new, innovative approaches and solutions. Theory must answer the question on whether such problems have a potential solution, and if so, what experimental directions need to be developed first, and to what extent.
Enhancement of γ-Ray Absorption in the Radiation Field of a High-Power Laser
This paper reports an analytic estimate of the cross section for the absorption of a $\ensuremath{\gamma}$-ray photon when the nuclear recoil is compensated by the simultaneous absorption of an optical photon from the radiation field of a high-power laser. A multiphonon transition model is developed and cross sections of the order of 1 ${\mathrm{fm}}^{2}$ are obtained when nearly resonant intermediate states of nuclear excitation are assumed to lie within a few tens of eV of the transition energy.