Hydrogen-Free Liquid-Helium Recovery Plants: The Solution for Low-Temperature Flow Impedance Blocking

Hydrogen-Free Liquid-Helium Recovery Plants: The Solution for Low-Temperature Flow Impedance Blocking

M. Gabal, A. Arauzo, A. Camón, M. Castrillo, E. Guerrero, M. P. Lozano, M. P. Pina, J. Sesé, S. Spagna, J. Diederichs, G. Rayner, J. Sloan, F. Galli, W. van der Geest, C. Haberstroh, N. Dittmar, A. Oca, F. Grau, A. Fernandes, and C. Rillo Departamento de Física de la Materia Condensada, Universidad de Zaragoza, Zaragoza 50009, Spain Instituto de Nanociencia de Aragón (INA), Universidad de Zarag...

Low-temperature inelastic collisions between hydrogen molecules and helium atoms.

Inelastic H(2):He collisions are studied from the experimental and theoretical points of view between 22 and 180 K. State-to-state cross sections and rates are calculated at the converged close-coupling level employing recent potential energy surfaces (PES): The MR-PES [J. Chem. Phys. 100, 4336 (1994)], and the MMR-PES and BMP-PESs [J. Chem. Phys. 119, 3187 (2003)]. The fundamental rates k(2-->...

Hydrogen- and helium-implanted silicon: Low-temperature positron-lifetime studies.

Quantum simulation of low-temperature metallic liquid hydrogen.

The melting temperature of solid hydrogen drops with pressure above ~65 GPa, suggesting that a liquid state might exist at low temperatures. It has also been suggested that this low-temperature liquid state might be non-molecular and metallic, although evidence for such behaviour is lacking. Here we report results for hydrogen at high pressures using ab initio methods, which include a descripti...

Scattering of hydrogen atoms from liquid-helium surfaces.

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