Phys.org  March 13, 2024 MeV temperature electrons generation at non-relativistic intensities with high repetition rate lasers is important for the realization of compact, ultra-fast electron sources. An international team of researchers (India, UK, China) developed a technique of dynamic target structuring of micro-droplets using a millijoule class laser that used two collinear laser pulses; the first to create a concave surface in the liquid drop and the second, to dynamically-drive electrostatic plasma waves that accelerated electrons to MeV energies. The acceleration mechanism, identified as two plasmon decay instability was shown to generate two beams of electrons with hot electron temperature […]