6.レーザービームによる真空場粒子加速(<講座>高出力超短パルス電磁波とプラズマの相互作用VII)

概要

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Six laser-based acceleration schemes are presented, including several that are largely derived from plasma-based acceleration models. In all the schemes considered, acceleration is longitudinal relevant to LlNAC. In section 1, acceleration by a plane transverse wave, which is equivalent to that by photon pressure, is presented. In section 2, a new type of V_p × B acceleration is introduced in which an electron is trapped in a traveling magnetic field and accelerated. In section 3, acceleration by a pair of crossed laser beams is discussed. The longitudinal field E_z is shown to exist in the overlapped region. In section 4, electron acceleration is accomplished by utilizing the inherent pairing of a narrow laser beam with each E_z. In section 5, two narrow beams are superposed to create a favorable E_z field for use in acceleration. Finally, in section 6, we show that parallel running, multi-laser beams with slightly shifted phase angles relative to neighboring beams form virtual wave fronts that can trap and accelerate a test electron through the V_p × B mechanism.
社団法人プラズマ・核融合学会の論文
1997-10-25