| PHYSICS OF GASES, PLASMAS, AND ELECTRIC DISCHARGES |
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K-Shell Spectra from CH Foam Tamped Ti Layers Irradiated with Nanosecond Laser Pulses |
| ZHAO Yang**, ZHU Tuo, WEI Min-Xi, XIONG Gang, SONG Tian-Ming, HU Zhi-Min, HUANG Cheng-Wu, SHANG Wan-Li, YANG Guo-Hong, ZHANG Ji-Yan, YANG Jia-Min |
| Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900 |
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| Cite this article: |
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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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Received: 31 March 2012
Published: 31 July 2012
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| PACS: |
52.50.Jm
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(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
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32.30.Rj
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(X-ray spectra)
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32.70.Jz
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(Line shapes, widths, and shifts)
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