Посилання:Heat capacity of p-H₂–p-D₂–Ne solid solution: Effect of (p-D₂)Ne clusters
/ M.I. Bagatskii, I.Ya. Minchina, V.M. Bagatskii // Физика низких температур. — 2005. — Т. 31, № 6. — С. 620-623. — Бібліогр.: 15 назв. — англ.
Підтримка:The authors are indebted to A.I. Prokhvatilov and
M.A. Strzhemechny for helpful discussions. The study
was supported by the Ukraine Minister of Education
and Science State Foundation of for Basic research
(Project ¹ 02.07/00391-2004).
The heat capacity of a solid solution of 1% p-D₂ and 0.25% Ne in p-H₂ has been investigated in
the interval ΔT = 0.5–4 K. An excess heat capacity ΔCNe of this solution exceeding the heat capacity
of the 1% p-D₂ in p-H₂ solution has been detected and analyzed. It is found that below 2 K the
dominant contribution to the heat capacity ΔCNe is made by the rotation of the p-D₂ molecules in
the (p-D₂)Ne type clusters. The number of (p-D₂)Ne clusters in the solid sample is strongly dependent
on the conditions of preparation. The splitting of the J = 1 level of the p-D₂ molecules in
the (p-D₂)Ne clusters Δ = 3.2 K is consistent with the theoretical estimate.