Autoinjection of electrons into a wake field using a capillary with attached cone

Mori, Y.; Sentoku, Y.; Kondo, K.; Tsuji, K.; Nakanii, N.; Fukumochi, S.; Kashihara, M.; Kimura, K.; Takeda, K.; Tanaka, K. A.; Norimatsu, T.; Tanimoto, Tsuyoshi; Nakamura, H.; Tampo, M.; Kodama, R.; Miura, E.; Mima, K.; Kitagawa, Y.
December 2009
Physics of Plasmas;Dec2009, Vol. 16 Issue 12, p123103
Academic Journal
By using a cone attached to a capillary, electrons generated through a laser interaction were autoinjected and accelerated in a low-density wake field. The cone attached to the entrance of the capillary serves as an electron supplier. It increases the number of electrons from below the detection limit to 1.1 pC and the energy from 4 to 30 MeV. A two-dimensional particle-in-cell simulation reveals that a significant number of energetic electrons are extracted from the surface of the cone and are subsequently trapped in the wake field and accelerated in the capillary.


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