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Laser intensity measurement by Thomson scattering
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View: Figures


Image of FIG. 1.
FIG. 1.

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.

Image of FIG. 2.
FIG. 2.

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.

Image of FIG. 3.
FIG. 3.

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.

Image of FIG. 4.
FIG. 4.

The laser intensity and two different electron density profiles at the laser focus; (a) step function, (b) cosine function.

Image of FIG. 5.
FIG. 5.

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.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Laser intensity measurement by Thomson scattering