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The coaxial two-layer target. A and B correspond to and , respectively. [(a) and (b)] Trajectories of typical electrons (for ) initially at and show the effects of electron acceleration, scatter, and reflection. (c) The electric field . (d) The magnetic field .
Behavior of the beam and target electrons at . [(a) and (b)] The phase-space trajectories of the beam electron. [(c) and (d)] The velocities of beam (red) and fluid plasma (blue) electrons.
Snapshots of (a) and (b) the temperature (eV) of the target electrons at . [(c) and (d)] The longitudinal electric field (V/cm). [(e) and (f)] Current density . [(g) and (h)] The azimuthal magnetic field (Gauss). [(i) and (j)] An enlargement of (g) and (h) for and .
Comparison of the distributation of the number of beam electrons and their energy for cases I and II. (a) In the radial direction. (b) Energy spectra of the beam electrons.
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