Laser-based diagnostics applications for plasma-surface interaction studies

Laser-based diagnostics applications for plasma-surface interaction studies

Laser-based diagnostics applications for plasma-surface interaction studies 150 150 Mathew

Laser-based diagnostics applications for plasma-surface interaction studies

Several laser based diagnostics are implemented on to the linear plasma generator Magnum-PSI, wherein ITER divertor relevant plasma-wall conditions are realized. Laser Induced Desorption Quadrupole Mass Spectroscopy (LID-QMS) and Laser Induced Breakdown Spectroscopy (LIBS) are installed to measure deuterium retention in plasma facing components. Combined with Thermal Desorption Spectroscopy, LID-QMS can be used to measure lateral retention profiles. LIBS is used to measure the surface composition qualitatively, after plasma exposure. An advanced Thomson Scattering (TS) system measures electron density, neutral density and electron temperature profiles (spatial resolution < 2 mm) across the maximum 100mm plasma diameter. Very low electron density can be measured within seconds with accuracies better than 6%.

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26/11/2013