INVESTIGATION OF POLARIZATION SIGNATURES OF HOT ELECTRONS OF L-SHELL Mo X-PINCH PLASMA PRODUCED BY THE COMPACT GENERATOR OF ECOLE POLYTECHNIQUE
Résumé
Principal Component Analysis (PCA) is applied and compared with the SCRAM model for investigating the electron beam effects on the L-shell Mo of X Pinch produced spectra. PCA of L-shell Mo are extracted over a non-LTE collisional radiative L-shell Mo model with and without presence of hot electrons to discuss the electron beam effects. Furthermore, PC spectra of L shell Cu and Mo ( including Ne-like, F-Like and Na-Like transitions) are also studied and compared to investigate the polarization types of these transitions. The extracted PCs are used to estimate the plasma electron temperature, density and beam fractions from a representative time integrated spatially resolved L-shell Cu X-pinch plasma spectrum. The experimental spectrum is produced by the explosion of 25-μm Cu wires on a compact LC (40 kV, 200 kA, 200 ns) generator. The modeled plasma electron temperatures are about Te~600 eV and Ne=1x1020 cm-3 in the presence of the fraction of the beams with f~0.1 and centered energy of ~10 keV.