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Online time-differential perturbed angular correlation study with an O beam - Residence sites of oxygen atoms in highly oriented pyrolytic graphite |
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| Authors: | W. Sato H. Ueno H. Miyoshi D. Kameda K. Shimada S. Suda A. Shinohara K. Asahi |
| Affiliation: | a Graduate School of Science, Osaka University, 1-1 Machikaneyamacho, Toyonaka, Osaka 560-0043, Japan b Applied Nuclear Physics Laboratory, RIKEN, Wako, Saitama 351-0198, Japan c Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra ACT 0200, Australia d Department of Physics, Tokyo Institute of Technology, Meguro, Tokyo 152-8551, Japan e Research Reactor Institute, Kyoto University, Kumatori, Osaka 590-0494, Japan |
| Abstract: | The online time-differential perturbed angular correlation (TDPAC) method was applied to a study of the physical states of a probe 19F, the β− decay product of 19O (t1/2 = 26.9 s), implanted in highly oriented pyrolytic graphite. The observed magnitude of the electric field gradient at the probe nucleus, ∣Vzz∣ = 2.91(17) × 1022 V m−2, suggests that the incident 19O atoms are stabilized at an interlayer position with point group C3v. Exhibiting observed TDPAC spectra having a clear sample-to-detector configuration dependence, we demonstrate the applicability of the present online method with a short-lived radioactive 19O beam. |
| Keywords: | 85.40.Ry 76.80.+y 81.05.Uw |
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