In this paper the Laser Induced Breakdown Spectroscopy (LIBS) measurement of the deuterium (used as a proxy for tritium) retained in and the surface elemental composition of the FTU Mo (TZM) toroidal limiter tiles, carried out from remote (~2.5 m) during short breaks of the operations or during machine maintenance, are reported. Single pulse technique has been used with the FTU vessel under high vacuum or in Nitrogen or Argon atmosphere. In vacuum experiments D? and H? lines have been detected with good resolution, while in Ar atmosphere (5 × 104 Pa) the two lines were partially overlapped due to Stark broadening. First results of measurements in N2 atmosphere (105 Pa) showed no presence of D? and H? lines. These measurements were also carried out for supporting the foreseen use of a robotic arm for an extended LIBS analysis of retained deuterium in the FTU vessel components.
Detection by LIBS of the deuterium retained in the FTU toroidal limiter
Maddaluno G.; Almaviva S.; Caneve L.; Colao F.; Lazic V.; Laguardia L.; Gasior P.; Kubkowska M.; FTU team
Journal:
Nuclear materials and energy 18 pp. 208 - 211
Year:
2019
ISTP Authors: Laura Laguardia
Keywords: FTU tokamak, Toroidal limiter, Deuterium retention, LIBS
Research Activitie: JOURNAL ARTICLES
Related products
-
Nuclear fusion 61 (7), pp. 076012-1 - 076012-14 Year: 2021 DOI: 10.1088/1741-4326/abfb13
H-mode plasmas in the pre-fusion power operation 1 phase of the ITER research plan
Loarte A.; Polevoi A.R.; Schneider M.; Pinches S.D.; Fable E.; Militello Asp E.; Baranov Y.; Casson F.; Corrigan G.; Garzotti L.; Harting D.; Knight P.; Koechl F.; Parail V.; Farina D.; Figini L.; Nordman H.; Strand P.; Sartori R.
-
Nuclear fusion 61 (7), pp. 076013-1 - 076013-15 Year: 2021 DOI: 10.1088/1741-4326/abfcdf
Prediction of temperature barriers in weakly collisional plasmas by a Lagrangian coherent structures computational tool
Di Giannatale G.; Bonfiglio D.; Cappello S.; Chacon L.; Veranda M.
-
Trends in Environmental Analytical Chemistry 30 pp. e00121-1 - e00121-12 Year: 2021 DOI: 10.1016/j.teac.2021.e00121
Laser-Induced Breakdown Spectroscopy applied to environmental systems and their potential contaminants. An overview of advances achieved in the last few years
Goncalves D.A.; Senesi G.S.; Nicolodelli G.
English
Italiano