Yoshio Nakai
Kyoto University
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Publication
Featured researches published by Yoshio Nakai.
Physica Scripta | 1990
Ken-ichi Kan'no; Koichiro Tanaka; Hideo Kosaka; Takuya Mukai; Yoshio Nakai; Minoru Itoh; Takeshi Miyanaga; Kazutoshi Fukui; Makoto Watanabe
The combination of single-bunched light pulses (duration: 0.5 ns, interval: 177.6 ns) from UVSOR (Okazaki, Japan) with a method of time-correlated single-photon counting was applied to study decay behaviors of intrinsic luminescence in nine typical alkali halide crystals (Na, K, Rb) × (Cl, Br, I). Under excitation into the band-to-band transition, two emission bands, so far called σ emission (fluorescence with a short lifetime) and π emission (phosphorescence with a much longer lifetime), were observed in general at LHeT. The decay behaviors observed were essentially the same as those reported in previous studies where pulsed particles were used as an excitation source. A novel situation has, however, been recognized in the π emission in both NaBr and NaI: A fluorescent component was found clearly to coexist with the long-lived phosphorescent component. This suggests that the initial state of the π emission in NaBr and NaI is a singlet-triplet pair slightly split by the exchange interaction.
Physical Review B | 2011
S. Kasahara; T. Shibauchi; K. Hashimoto; Yoshio Nakai; Hiroaki Ikeda; Takahito Terashima; Y. Matsuda
Single crystals of CaFe
Journal of the Physical Society of Japan | 1979
Ken-ichi Kan'no; Minoru Itoh; Yoshio Nakai
_2
Solid State Communications | 1973
Ken-ichi Kan'no; Shun-ichi Naoe; Seiji Mukai; Yoshio Nakai; Takeshi Miyanaga
(As
Solid State Communications | 1968
Yasuo Iguchi; Takasi Sagawa; Shigeru Sato; Makoto Watanabe; Hiroshi Yamashita; Arisato Ejiri; Michio Sasanuma; Shun-ichi Nakai; Masatoshi Nakamura; Shigeo Yamaguchi; Yoshio Nakai; Takanori Oshio
_{1-x}
Journal of the Physical Society of Japan | 1954
Yoichi Uchida; Yoshio Nakai
P
Journal of the Physical Society of Japan | 1984
Masashi Yoshida; Nobuhito Ohno; Hideo Watanabe; Kaizo Nakamura; Yoshio Nakai
_x
Journal of the Physical Society of Japan | 1969
Makoto Watanabe; Yoshimitsu Nakamura; Yoshio Nakai; Takatoshi Murata
)
Journal of the Physical Society of Japan | 1984
Takenori Higashimura; Hiroyuki Nakatani; Minoru Itoh; Ken-ichi Kan'no; Yoshio Nakai
_2
Solid State Communications | 1980
Kaizo Nakamura; Nobuhito Ohno; Masashi Yoshida; Yoshio Nakai
are found to exhibit the tetragonal (T) to collapsed-tetragonal (cT) transition at