Structure of quench condensed nH₂–N₂ binary alloys: isotope effect

• Published in: Физика низких температур
• Date: 2007
• Main Authors: Galtsov, N.N., Prokhvatilov, A.I., Strzhemechny, M.A.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2007
• Subjects: Quantum Crystals
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/121784
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Structure of quench condensed nH₂–N₂ binary alloys: isotope effect / N.N. Galtsov, A.I. Prokhvatilov, M.A. Strzhemechny // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 668-672. — Бібліогр.: 19 назв. — англ.

Structure of quench condensed nH₂–N₂ alloys was investigated by powder x-ray diffraction over a wide
 range of temperatures, compositions, and rates of deposition. The structure of the deposits is shown to depend
 on the condensation regime. Under mild regime, no solid nitrogen reflections from hydrogen-rich deposits
 were observed. When the temperature is increased to the hydrogen triple point, nitrogen lines appear
 at substantially larger angles compared to pure N₂, which suggests presence of dissolved hydrogen. The
 quantum nature of this hydrogen is suppressed in the nitrogen matrix. The samples grown in mild regime exhibit
 the highest apparent solubility (up to 25%) of hydrogen in solid N₂. When H₂ is substituted by D₂, the
 isotope effect consists in a wider range of mono-phase states based on the nitrogen cubic lattice, which can
 accommodate up to 70% of deuterium, if grown under mild regime.