Abstract
Hot dense titanium plasma was produced by irradiating a CH foam coated titanium layer with nanosecond laser pulses. The time-integrated emission spectra of He-like titanium were measured by using an absolutely calibrated flat crystal spectrometer. The synthetic spectra obtained by the steady collisional-radiative (CR) equilibrium model associated with the hydrodynamic simulations were compared with the experimental spectra. The results show that the electron density increases up to 5 × 1021 cm−3 with CH foam of density 40 mg/cc. This work indicates that an overlay of CH foam on a solid target is beneficial to create an optimum condition for K-shell emissions from a high density plasma region.
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