Monoenergetic Electron Beams with Ultralow Normalized Emittance Generated from Laser-gas Interaction *
نویسندگان
چکیده
High quality electron bunches were generated by using 2 TW, 80 fs high contrast laser pulses interacting with helium gas targets. In optimized experimental condition, we got tens of MeV monoenergetic electron beams with small energy spread and the normalized emittance reaches 0.07π mm·mrad. Experimental and simulation results show that proper plasma densities make the injection more stable and the acceleration length much longer on the premise of self-modulation and self-trapping, which significantly reduce the beam size and the divergence angle. Due to their ultra small emittance and high initial energy, such bunches can be suitable electron sources for high current linear accelerators.
منابع مشابه
Generation of quasi-monoenergetic electron beams with small normalized divergences angle from a 2 TW laser facility.
We report the generation of a 6 pC, 23 MeV electron bunch with the energy spread ± 3.5% by using 2 TW, 80 fs high contrast laser pulses interacting with helium gas targets. Within the optimized experimental condition, we obtained quasi-monoenergetic electron beam with an ultra-small normalized divergence angle of 92 mrad, which is at least 5 times smaller than the previous LPA-produced bunches....
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