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/

Global: Zendy Plus annual

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

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We measure inelastic collisional cross sections for the ground $^3$F$_2$state and the excited $^3$P$_0$ state of atomic thorium in cold collisions with$^3$He. We determine for Th ($^3$F$_2$) at 800 mK the ratio $\gamma \approx500$ of the momentum-transfer to Zeeman relaxation cross sections forcollisions with $^3$He. For Th ($^3$P$_0$), we study electronic inelasticprocesses and find no quenching even after $10^6$ collisions. We also determinethe radiative lifetime of Th ($^3$P$_0$) to be $\tau > 130$ ms. This greatstability of the metastable state opens up the possibility for further study,including trapping.

Properties of the ground $^3$F$_2$ state and the excited $^3$P$_0$ state of atomic thorium in cold collisions with $^3$He