Muonium diffusion in ice |
| |
| Institution: | 1. Department of Physics, College of Science, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia;2. Department of Physics, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU), Riyadh, Saudi Arabia;3. The Abdus Salam International Centre for Theoretical Physics, Strada Costiera 11, Miramare-Trieste, Italy;4. Mathematics and Statistics Department, Faculty of Science, Taif University, Taif, Saudi Arabia;5. Mathematics Department, Faculty of Science, Sohag University, Sohag, Egypt;1. Hitachi, Ltd., Research & Development Group, 7-2-1, Omika-cho, Hitachi, Ibaraki, 319-1221, Japan;2. Ibaraki University, 2-1-1 Bunkyo, Mito Ibaraki, 310-8512, Japan;3. High Energy Accelerator Research Organization (KEK), 1-1, Oho, Tsukuba, 305-0801, Japan;1. Department of Gastroenterological Surgery II, Hokkaido University Faculty of Medicine, Sapporo, Japan;2. Department of Bio-material, Chitose Institute of Science and Technology, Chitose, Japan;3. Department of Biostatistics, Hokkaido University Hospital, Sapporo, Japan;1. Department of Medical Engineering, Afeka Tel Aviv Academic College of Engineering, Tel Aviv, Israel;2. Department of Exact Sciences, Afeka Tel Aviv Academic College of Engineering, Tel Aviv, Israel;3. Neufeld Cardiac Research Institute, Tel Aviv University, Sheba Medical Center, Tel-Hashomer, Israel |
| |
| Abstract: | Muonium (Mu, μ+e−) is generally regarded as a light isotope of hydrogen. The procession signals of muonium in single crystals of H2O and D2O ice have been studied from 8 to 263 K using the muon spin rotation (μSR) technique. Transverse spin relaxation rates have been extracted and interpreted in terms of modulation of the dipolar interaction between muonium and the protons/deuterons in the lattice by translational diffusion of muonium. In contrast to the situation for H and a previous claim for Mu, muonium is found to be diffusing at temperatures as low as 8 K. An activation energy of 40 meV is obtained by fitting the highest temperature data to an Arrhenius expression. At low temperature muonium is thought to diffuse by quantum tunnelling. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
