Enhancing Bremsstrahlung Production From Ultraintense Laser-Solid Interactions With Front Surface Structures

Abstract

We report the results of a combined study of particle-in-cell and Monte Carlo modeling that investigates the production of Bremsstrahlung radiation produced when an ultraintense laser interacts with a tower-structured target. These targets are found to significantly narrow the electron angular distribution as well as produce significantly higher energies. These features combine to create a significant enhancement in directionality and energy of the Bremstrahlung radiation produced by a high-Z converter target. These studies employ short-pulse, high intensity laser pulses, and indicate that novel target design has potential to greatly enhance the yield and narrow the directionality of high energy electrons and $\gamma$-rays. We find that the peak $\gamma$-ray brightness for this source is 6.0$\times$10${}^{19}$ ${\mathrm{s}}^{-1}\mathrm{m}{\mathrm{m}}^{-2}\mathrm{mra}{\mathrm{d}}^{-2}$ at 10MeV and 1.4$\times$10${}^{19}$ ${\mathrm{s}}^{-1}\mathrm{m}{\mathrm{m}}^{-2}\mathrm{mra}{\mathrm{d}}^{-2}$ at 100MeV (0.1$\%$ bandwidth).

arXiv admin note: text overlap with arXiv:1310.3283

References in corpus (5)

• Metal nanoplasmas as bright sources of hard x-ray pulses
• Enhanced Proton Acceleration by an Ultrashort Laser Interaction with Structured Dynamic Plasma Targets
• The Effects of Front-Surface Target Structures on Properties of Relativistic Laser-Plasma Electrons
• On The Origin of Super-Hot Electrons from Intense Laser Interactions with Solid Targets having Moderate Scale Length Preformed Plasmas
• Enhanced surface acceleration of fast electrons by using sub-wavelength grating targets

Cited by in corpus (8)

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• Effective production of gammas, positrons, and photonuclear particles from optimized electron acceleration by short laser pulses in low-density targets
• High-Energy Radiation and Pair Production by Coulomb Processes in Particle-In-Cell Simulations
• Photon emission by bremsstrahlung and nonlinear Compton scattering in the interaction of ultraintense laser and plasmas
• Enhancement on Laser Intensity and Proton Acceleration Using Micro-tube Plasma Lens Targets
• Real time reconstruction of the fast electron spectrum from high intensity laser plasma interaction using gamma counting technique
• Piecewise acceleration of electrons across a periodic solid-state structure irradiated by intense laser pulse
• Highly efficient conversion of laser energy to hard X-rays in high intensity laser-solid simulations