Generation of 500 MeV-1 GeV energy electrons from laser wakefield acceleration via ionization induced injection using CO{sub 2} mixed in He

Journal Article · Mon Apr 01 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4799280· OSTI ID:22162831

Mo, M. Z.; Ali, A.; Fedosejevs, R. ^[1]; Fourmaux, S.; Lassonde, P.; Kieffer, J. C. ^[2]

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1. Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Alberta T6G 2V4 (Canada)
2. INRS-EMT, Universite du Quebec, 1650 Lionel Boulet, Varennes, Quebec J3X 1S2 (Canada)

Laser wakefield acceleration of 500 MeV to 1 GeV electron bunches has been demonstrated using ionization injection in mixtures of 4% to 10% of CO{sub 2} in He. 80 TW laser pulses were propagated through 5 mm gas jet targets at electron densities of 0.4-1.5 Multiplication-Sign 10{sup 19}cm{sup -3}. Ionization injection led to lower density thresholds, a higher total electron charge, and an increased probability of producing electrons above 500 MeV in energy compared to self-injection in He gas alone. Electrons with GeV energies were also observed on a few shots and indicative of an additional energy enhancement mechanism.

• OSTI ID: 22162831
• Journal Information: Applied Physics Letters, Vol. 102, Issue 13; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ACCELERATION
BEAM BUNCHING
CARBON DIOXIDE
COMPARATIVE EVALUATIONS
DENSITY
ELECTRON DENSITY
ELECTRONS
HELIUM
INJECTION
IONIZATION
MEV RANGE 100-1000
PARTICLE BEAMS
PULSES
WAKEFIELD ACCELERATORS