Experimental setup for cone capillary electron acceleration.
(a) Hollow cone capillary (upper sketch) and capillary without cone (lower sketch). (b) Corresponding IP images from the ESM for the two targets.
(a) Photograph of the cone capillary (side view). (527 nm) emission along the capillary axis for (b) the cone capillary and (c) the capillary without cone. The left and right spots correspond to the entrance and exit points, respectively. The middle bright spot in (c) corresponds to a glue point for a post supporting the capillary.
Electron energy spectra for the cone capillary with and without ambient gas, as well as for a hollow cone. The thin solid line and the dashed line are Maxwellian fits.
(a) Contour plots of the laser intensity at sequential times. Electron phase plots of (b) at 320 fs (when the pulse enters the capillary), (c) at 480 fs, and (d) at 1.3 ps. (e) The electron angular distribution at 320 fs observed near the entrance of the capillary [the region marked by an oval in panel (a)]. (f) Electron energy spectra.
Article metrics loading...
Full text loading...