Solid hydrogen-isotope pellet injector.

Wetting Studies of Solid and Liquid Hydrogen Isotope Films

Hydrogen Isotope Exchange Reaction

polarization causes Q1ftf partly to cance12 Qu' and so to reduce the calculated MO approximation DNQ, making it agree better with the observed value.2~ This improvement most probably much outweighs the contrary effects obtained by optimizing Z*. The effect on DNQ of using polarized AO's is quite different in the AO than in the MO approximation. Referring to an earlier paragraph on the variation...

Hydrogen isotope fractionation during H

Hydrogen metabolism was studied in the anaerobic bacterium, Sporomusa sp. strain DMG 58, by measuring natural abundance levels of deuterium in H 2 , H 2 O, and individual fatty acids during acetogenic growth on H 2 / CO 2 . Four cultures were grown, each in medium with a distinct hydrogen-isotopic composition ( δ D-H 2 O). The δ D value of H 2 was quantified in the residual gas exiting the grow...

A compact lithium pellet injector for tokamak pedestal studies in ASDEX Upgrade.

Experiments have been performed at ASDEX Upgrade, aiming to investigate the impact of lithium in an all-metal-wall tokamak and attempting to enhance the pedestal operational space. For this purpose, a lithium pellet injector has been developed, capable of injecting pellets carrying a particle content ranging from 1.82 × 10(19) atoms (0.21 mg) to 1.64 × 10(20) atoms (1.89 mg). The maximum repeti...

Hydrogen Isotope Ratios of Individual Organic Compounds

Isotopic compositions of carbon-bound hydrogen in individual compounds from eight different organisms were measured using isotope-ratio-monitoring gas chromatography-mass spectrometry. This technique is capable of measuring D/H ratios at natural abundance in individual lipids yielding as little as 20 nmol of H2, and is applicable to a wide range of compounds including hydrocarbons, sterols, and...