A reliable cw Lyman-α\alpha laser source for future cooling of antihydrogen

We demonstrate a reliable continuous-wave (cw) laser source at the 1\,$S$--2\,$P$ transition in (anti)hydrogen at 121.56\,nm (Lyman-$\alpha$) based on four-wave sum-frequency mixing in mercury. A two-photon resonance in the four-wave mixing scheme is essential for a powerful cw Lyman-$\alpha$ source and is well investigated.Comment: 8 pages, 3 figures, Proceedings of LEAP 201

METAL-GRAPHITE REAGENTS IN CARBOHYDRATE CHEMISTRY. VII. FRAGMENTATION OF O-ALKYLIDENE-DEOXY HALO SUGARS

Contrary to the methods previously described, treatment with zinc/- silver-graphite or potassium-graphite laminate (CsK) of the di-0- isopropylidene derivatives of 1-deoxy-l-halo-[beta]-D-fructopyranose, 1-deoxy- 1-halo-[alpha]-L-sorbofuranose, 6-deoxy-6-iodo-[alpha]-D-galactopyranose, and 3- deoxy-3-iodo-[alpha]-D-glucofuranose resulted in the high yield formation of the respective unsaturated sugar derivatives by fragmentation with loss of one of the acetal groups