The lattice expansion and thermal behavior of γ-irradiated unstable clathrate hydrates are explored to understand the complex physicochemical properties of clathrate hydrates. A previous study revealed that enclathrated methyl vinyl ketone molecules show a peculiar conformational change via a ketyl radical anion after γ-irradiation with an annealing process. We measured the lattice parameters of γ-irradiated binary methyl vinyl ketone + CH₄, O₂, and N₂ hydrates at various temperatures. We observed that induced radical affects the lattice expansion behavior, and the thermal expansion coefficients of γ-irradiated hydrates highly depend on the types of secondary gaseous guest molecules.

探索了γ辐照的不稳定笼形水合物的晶格膨胀和热行为，以了解笼形水合物的复杂理化性质。先前的研究表明，经退火处理的γ射线辐照后，包封的甲基乙烯基酮分子在酮基阴离子的作用下显示出独特的构象变化。我们在不同温度下测量了γ辐照的二甲基甲基乙烯基酮+ CH ₄，O ₂和N ₂水合物的晶格参数。我们观察到诱导自由基会影响晶格的膨胀行为，并且γ辐射的水合物的热膨胀系数高度取决于次级气体客体分子的类型。