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山川 紘一郎; 石橋 篤季*; 波吉 敏信*; 東 優一*; 荒川 一郎*
Physical Review B, 102(4), p.041401_1 - 041401_5, 2020/07
被引用回数:2 パーセンタイル:12.9(Materials Science, Multidisciplinary)The clear evidence for the nuclear spin conversion of matrix-isolated H is presented. We trapped H in a CO film at 5.4 K and detected the induced infrared-absorption band including both the components of ortho and para H. By analyzing its time-evolution, the conversion rate was determined to be 9.4 10 s. We confirmed that this fast conversion was induced just by the CO film with the uniquely unstable structure. We also identified H at another kind of trapping sites, accompanied by higher anisotropy of the confining potential, and estimated its conversion rate to be 6 10 s.