Laser linac: nondiffractive beam and gas-loading effects
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abstract
It is shown that high energy gains are possible in a gas-loaded laser linac using a nondiffracting beam. The authors derive expression for optimum gas index as a function of particle injection energy and other parameters, including the case of longitudinal grading, for both Gaussian and non diffracting beams. The properties of pulsed laser beams are discussed.