showing 6 related works from this author
Tritium release behavior of beryllium pebbles after neutron irradiation between 523 and 823K
2013
Abstract Post-irradiation tritium release from the Pebble Bed Assembly (PBA) neutron-irradiated beryllium (Be) pebbles (∅ ≈ 1 mm; the total tritium inventory 2–4 GBq/g) was investigated on annealing in He + 0.1% H 2 . Temperature ramps of 2.3 K/min followed by annealing for 1 h at 1310–1320 K resulted in complete detritiation of the PBA Be pebbles. The tritium burst release occurred after a time lag of 1–6.5 h during constant temperature anneals at 1089–1180 K, with the release time measured after reaching the annealing temperature. Tritium burst release was also observed to occur during cool down. Anneals at 1089 K for 8 h and at 1045 K for 23 h caused detritiation of the PBA Be pebbles by…
Novel method for determination of tritium depth profiles in metallic samples
2019
Tritium accumulation in fusion reactor materials is considered a serious radiological issue, therefore a lot of effort has been concentrated on the development of radiometric techniques. A novel method, based on gradual dissolution, for the determination of the total tritium content and its depth profiles in metallic samples is demonstrated. This method allows for the measurement of tritium in metallic samples after their exposure to a hydrogen and tritium mixture, tritium containing plasma or after irradiation with neutrons resulting in tritium formation. In this method, successive layers of metal are removed using an appropriate etching agent in the controlled regime and the amount of evo…
Tritija uzvedība kodolsintēzes reaktora materiālos
2012
ANOTĀCIJA Darbs veltīts nākotnes enerģijas avota kodolsintēzes attīstībai. Pētījuma mērķis ir novērtēt kodolsintēzes reaktora materiālu piemērotību saistībā ar to izmaiņām iekārtas apstākļos un radioaktīvā ūdeņraža izotopa tritija uzkrāšanos. Darbā izmantotas LU Ķīmiskās Fizikas Institūta Cietvielu Radiācijas Ķīmijas Laboratorijā izstrādātas metodes un iekārtas. Novērots sinerģētisks jonizējošā starojuma un magnētiskā lauka efekts tritija izdalīšanās veicināšanā un novērtēts tā kopējais ieguldījums. Balstoties uz iegūtajiem rezultātiem izstrādātas rekomendācijas attiecībā uz radioaktīvo atkritumu daudzuma mazināšanu kodolsintēzes reaktoros Atslēgas vārdi: kodolsintēze, tritijs, difūzija, ma…
TRITIUM RELEASE CHARACTERISTICS OF NEUTRON-IRRADIATED REFERENCE BERYLLIUM PEBBLES FOR THE HELIUM COOLED PEBBLE BED (HCPB) BLANKET
2011
In this paper, we present results on tritium release from the beryllium pebbles irradiated for 294 full power days from 17 April 2003 to November 2004 to the neutron fluence of 1.5-2 × 1025 m-2 (E>...
Structure, tritium depth profile and desorption from 'plasma-facing' beryllium materials of ITER-Like-Wall at JET
2017
This work has been carried out within the framework of the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014–2018 under grant agreement No 633053 . The views and opinions expressed herein do not necessarily reflect those of the European Commission.
Tritium Behaviour in the Fusion Reactor Materials
2012
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