Delocalized Positronium in BaF2
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概要
- 論文の詳細を見る
The momentum distribution of positronium (Ps) in BaF2 single crystal has been investigated in a temperature range from 10 to 297 K. The existence of the delocalized and localized Ps has been confirmed. The momentum distribution of the delocalized Ps, a central peak at zero momentum and satellite peaks at the momenta corresponding to the reciprocal lattice vectors, has a large width even at 10 K. The width is almost independent of temperature. The behavior is different from that of the delocalized Ps in other ionic crystals. This indicates that the delocalized Ps in BaF2 is strongly coupled to the phonon field.
- 2011-05-15
著者
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Nagai Yasuyoshi
The Oarai Center Institute For Materials Research Tohoku University
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Suzuki Naoki
The Ihdmi Jikei University School Of Med.
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Hasegawa Masayuki
Institute For Materials Research Tohoku University
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Inoue Koji
The Oarai Center, Institute for Materials Research, Tohoku University, Oarai, Ibaraki 311-1313, Japan
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Nagai Yasuyoshi
The Oarai Center, Institute for Materials Research, Tohoku University, Oarai, Ibaraki 311-1313, Japan
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Hyodo Toshio
Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo, Meguro, Tokyo 153-8902, Japan
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INOUE Koji
The Oarai Center, Institute for Materials Research, Tohoku University
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