English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

The gas circulation loop LOOPINO has been set up and commissioned at TritiumLaboratory Karlsruhe (TLK) to perform Raman measurements of circulating tritiummixtures under conditions similar to the inner loop system of the neutrino-massexperiment KATRIN, which is currently under construction. A custom-madeinterface is used to connect the tritium containing measurement cell, locatedinside a glove box, with the Raman setup standing on the outside. A tritiumsample (purity > 95%, 20 kPa total pressure) was circulated in LOOPINO for morethan three weeks with a total throughput of 770 g of tritium. Compositionalchanges in the sample and the formation of tritiated and deuterated methanesCT_(4-n)X_n (X=H,D; n=0,1) were observed. Both effects are caused by hydrogenisotope exchange reactions and gas-wall interactions, due to tritium {\beta}decay. A precision of 0.1% was achieved for the monitoring of the T_2Q_1-branch, which fulfills the requirements for the KATRIN experiment anddemonstrates the feasibility of high-precision Raman measurements with tritiuminside a glove box.

Monitoring of tritium purity during long-term circulation in the KATRIN test experiment LOOPINO using laser Raman spectroscopy