Abstract in atti di convegno, 2022, ENG
Laguardia L.; Iafrati M.; Alonzo M.; Pedroni M.; Vassallo E.; De Angeli M.; Ghezzi F.; Gervasini G.; Uccello A.; Cremona A.; Mellera V.; Rufoloni A.
CNR ISTP - Istituto per la Scienza e Tecnologia dei Plasmi, Milano, Italy; ENEA, Department of Fusion and Nuclear Safety Technology, Frascati, Roma, Italy.
Laser Induced Desorption Spectroscopy (LIDS) has been used to investigate the helium desorption from coatings and bulk tungsten in laboratory experiments as a prerequisite for the later application in-situ in the GyM linear device. Tungsten coatings were deposited on a silicon substrate by magnetron sputtering process. After a preliminary surface characterization and before studying the gas desorption by LIDS, both types of tungsten samples were exposed to helium plasma in the GyM linear device. A Nd:YAG laser with constant output power leading to a smooth controllable increase of layer temperature was used, resulting in a complete desorption of gases in a point heated by the laser. The desorbed gases were detected up to 200 amu/e with a QMS (Quadrupole Mass Spectrometer). The results of the application of LIDS on tungsten targets exposed to a wide range of helium fluxes, fluences, and impact energies under different surface temperatures are presented and compared with Thermal Desorption Spectrometry (TDS) and Laser Induced Breakdown Spectroscopy (LIBS).
32nd Symposium on Fusion Technology - SOFT 2022, Dubrovnik, Croatia / hybrid, 18-23 September 2022
Diagnostics, Laser Induced Desorption Spectroscopy (LIDS), GyM linear device, Helium Plasma
De Angeli Marco, Vassallo Espedito, Ghezzi Francesco Mauro, Gervasini Gabriele, Cremona Anna, Mellera Vittoria Antonia, Laguardia Laura, Causa Federica, Uccello Andrea, Pedroni Matteo
ID: 471692
Year: 2022
Type: Abstract in atti di convegno
Creation: 2022-10-05 11:46:20.000
Last update: 2023-07-04 18:10:28.000
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CNR OAI-PMH: oai:it.cnr:prodotti:471692