In-situ LIBS and NRA deuterium retention study in porous W-O and compact W coatings loaded by Magnum-PSI

The purpose of this study is to investigate the applicability in-situ laser induced breakdown spectroscopy (LIBS) for deuterium retention measurements in tungsten coatings with different morphology and oxygen content. These were exposed a Gaussian beam plasma Magnum-PSI linear device. line intensities determined by LIBS compared content measured nuclear reaction analysis (NRA). Both NRA results showed that higher was achieved coating region corresponding periphery beam. This decreasing central can be attributed surface temperature. At same time, types assessed D intensity markedly from NRA. Porous W-O high had highest according while obtained an order magnitude smaller when other coatings. compact W thick almost also comparable these demonstrate its limits types.