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Spin-lattice relaxation of 25Al and 28P in Pt |
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| Authors: | M. Mihara K. Matsuta D. Nishimura T. Nagatomo R. Matsumiya S. Momota T. Ohtsubo T. Izumikawa D. M. Zhou Y. N. Zheng M. Ogura H. Akai J. Komurasaki M. Fukuda D. Ishikawa Y. Nojiri H. Hirano S. Takahashi R. Watanabe T. Kubo S. Y. Zhu A. Kitagawa M. Kanazawa S. Sato M. Torikoshi T. Sumikama T. Minamisono J. R. Alonso G. F. Krebs T. J. M. Symons |
| Affiliation: | 1. Department of Physics, Osaka University, 1-1, Machikaneyama, Toyonaka, Osaka, 560-0043, Japan 2. RIKEN, Wako, Saitama, 351-0198, Japan 3. Kochi University of Technology, Kami, Kochi, 782-8502, Japan 4. Department of Physics, Niigata University, Niigata, 950-2181, Japan 5. Radioisotope Center, Niigata University, Niigata, 951-8510, Japan 6. China Institute of Atomic Energy, Beijing, 102413, People’s Republic of China 7. National Institute of Radiological Sciences, Chiba, 263-8555, Japan 8. Tokyo University of Science, Noda, Chiba, 278-8510, Japan 9. Fukui University of Technology, Fukui, 910-8505, Japan 10. Lawrence Berkeley Laboratory, Berkeley, CA, 94720, USA |
| Abstract: | The spin-lattice relaxation times T 1 for short-lived β emitters 25Al(I?=?5/2, T 1/2?= 7.2 s) and 28P(I?=?3, T 1/2?= 270 ms) in Pt were measured by means of the β-NMR technique. As a result, T 1[25Al in Pt] = (1.1 $^{+ 0.7}_{- 0.3})$ s and T 1[28P in Pt] >0.5 s were obtained at temperatures of 17 and 20 K, respectively. The Knight shifts were estimated from the Korringa relation, which were evaluated by comparing to the first principle calculations. |
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