Full text loading...
Plot of the normalized frequency from Thomson scattering versus the intensity of a plane wave laser field at the observation angle . The solid arrows and dashed lines indicate the correlation between the maximal spectral shift and the peak intensity of a pulsed laser field.
Thomson scattering is collected orthogonally by projecting the laser beam to the image screen through a lens system. The coordinates are shown in the figure.
Electron trajectory and radiation spectrum for the electron born still at positions (a) and (b) . The spectrum of the laser pulse is shown as the dashed curve.
The laser intensity and two different electron density profiles at the laser focus; (a) step function, (b) cosine function.
Calculated Thomson scattering spectra at the orthogonal observation by summing over the region of observation on the beam , , , , and , . The interval between the calculation points is chosen to be , equivalent to the interatomic separation distance for a pressure gas at room temperature. (a), (b) correspond to the two ionization profiles in Fig. 4.
Article metrics loading...