orthohydrogen


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orthohydrogen

(ˌɔːθəʊˈhaɪdrədʒən)
n
(Chemistry) chem the form of molecular hydrogen, constituting about 75 per cent of the total at normal temperatures, in which the nuclei of the atoms spin in the same direction. Compare parahydrogen
Translations
orthohydrogène
References in periodicals archive ?
New fundamental equations of state for parahydrogen, orthohydrogen and normal hydrogen were developed to replace the previous standards (Younglove 1962).
New equations of state have been developed in the Master's Thesis of Jacob Leachman (4) for normal hydrogen, parahydrogen, and orthohydrogen; these equations will be fully documented elsewhere (5).
Low energy neutrons depolarize rapidly in orthohydrogen, while those below 15 meV retain their polarization in a parahydrogen target; hence, it is important to ensure that the liquid hydrogen target is prepared and maintained with the very low equilibrium ortho-hydrogen concentration of 0.1 %.