Betatron Radiation and Bremsstrahlung in the Interaction of Intense Laser Pulse with Solid Target

X-ray generation via synchrotron radiation and bremsstrahlung in the interaction of short laser pulses with a solid target is much current interest owing to its numerous applications. The efficiency energy conversion thus crucial factor. We found that mainly governed by ratio pulse width preplasma width, which turn profile, intensity, spot size. Synchrotron dominates when less than unity, otherwise dominates. type can be controlled tailoring parameters.