Muonium in ice
Muonium in ice
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冰中的锷
DOI：
10.1007/bf02064865
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发表时间：
1984
影响因子：
--
通讯作者：
K. E. Newman
中科院分区：
文献类型：
--
作者：
P. W. Percival;J. Brodovitch;S. Leung;K. E. Newman
在H2O和D2 O的单晶中研究了μ 鎓。在低横场中的双频进动和单个零场振荡表明μ介子超精细相互作用中存在轴对称的小的各向异性。的各向异性被证明是迄今无法解释的温度无关的贡献，在多晶样品中的μ自旋弛豫的原因。报道了水单晶中μ 鎓在99 K-263 K的弛豫速率。弛豫是由于电子核偶极耦合的μ介子晶格质子，调制的平移扩散μ介子沿c轴通道的冰晶格。研究了氢和钚在冰中扩散的一个简单模型。
Muonium has been studied in single crystals of H2O and D2O. Two-frequency precession in low transverse fields and a single zero-field oscillation indicate a small anisotropy of axial symmetry in the muonium hyperfine interaction. The anisotropy is shown to be the cause of the hitherto unexplained temperature independent contribution to muonium spin relaxation in polycrystalline samples. Relaxation rates for 99 K–263 K are reported for muonium in a single crystal of H2O. Relaxation is attributed to electron-nuclear dipolar coupling of muonium to lattice protons, modulated by translational diffusion of muonium alongc-axis channels of the ice lattice. A simple model for H and Mu diffusion in ice is investigated.