X-ray photons produced from a plasma-cathode electron beam for radiation biology applications

Production of a keV x-ray beam from synchrotron radiation in relativistic laser-plasma interaction.

We demonstrate that a beam of x-ray radiation can be generated by simply focusing a single high-intensity laser pulse into a gas jet. A millimeter-scale laser-produced plasma creates, accelerates, and wiggles an ultrashort and relativistic electron bunch. As they propagate in the ion channel produced in the wake of the laser pulse, the accelerated electrons undergo betatron oscillations, genera...

X-ray Radiation and Electron Injection from Beam Envelope Oscillations in Plasma Wakefield Accelerator Experiments at Facet

Plasma wakefield accelerator experiments at FACET at the SLAC National Accelerator Laboratory have shown a correlation between ionization-injected electrons and the betatron x-ray yield. Emittance spoiling foils were inserted into the beam and the x-ray yield, excess charge, and beam energy loss was measured. The excess charge and x-ray yield are attributed to the beam envelope oscillations whe...

Synchrotron x-ray radiation from laser wakefield accelerated electron beams in a plasma channel

Synchrotron x-ray radiation from laser wakefield accelerated electron beams was characterized at the HERCULES facility of the University of Michigan. A mono-energetic electron beam with energy up to 400 MeV was observed in the interaction of an ultra-short laser pulse with a super-sonic gas jet target. The experiments were performed at a peak intensity of 5×10 19 W/cm 2 by using an adaptive opt...

X-ray Emission Spectra from Laser-produced Cobalt Plasma

Laser produced chlorine plasma radiation studies for x-ray scattering experiments

The scattering of x-rays on bound and free electrons in a dense plasma can be applied for the characterization of solid density and super-dense plasmas [1, 2]. This scattering results in a spectrum that is not symmetric due to the dynamic structure factors at each side of the central wavelength, related by S(−ω, k) ∝ exp(−h̄ω/kBTe)S(ω, k). This is not important in the optical case (h̄ω kBTe) but ...