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Hirade, Tetsuya; Oka, Toshitaka*
Journal of Physics; Conference Series, 443, p.012060_1 - 012060_4, 2013/06
Times Cited Count：6 Percentile：89.46(Physics, Atomic, Molecular & Chemical)Room temperature ionic liquids (IL) have Negligible vapor pressure and other interesting properties. There are many considerable applications of ionic liquids, because of the environmentally friendly property. The radiation chemistry study for IL is very important for nuclear fuel reprocessing. The solvation of excess electrons is affected by molecular dynamics in sub-nano meter scale. Positronium (bond state of electron and positron) has a negative work function and form a bubble in liquids. The formation time is usually very fast as about 1ps that is difficult to observe by experiment. However we succeeded to observe the delayed bubble formation process in IL by use of the positron annihilation age-momentum correlation (AMOC) measurement. This phenomena could explain the anomalous long lifetime of the singlet positronium intrinsic annihilation lifetime. Probably only the lifetime spectra can give the information of bubble formation time in IL.
Kawasuso, Atsuo; Fukaya, Yuki; Maekawa, Masaki; Mochizuki, Izumi; Zhang, H.
Journal of Physics; Conference Series, 443(1), p.012084_1 - 012084_4, 2013/06
Times Cited Count：3 Percentile：78.06(Physics, Atomic, Molecular & Chemical)Spin-polarized positrons are useful in studying spintronics materials. We are producing positron sources for highly polarized positrons and are developing polarized positron beams using those sources. We investigated some ferromagnets and found that their electron momentum distributions exhibit field-reversal asymmetry. We also found a strong current-induced spin accumulation on Pt surfaces.
Fukaya, Yuki; Maekawa, Masaki; Mochizuki, Izumi; Wada, Ken*; Hyodo, Toshio*; Kawasuso, Atsuo
Journal of Physics; Conference Series, 443(1), p.012068_1 - 012068_6, 2013/06
Times Cited Count：13 Percentile：97(Physics, Atomic, Molecular & Chemical)no abstracts in English
Maekawa, Masaki; Kawasuso, Atsuo
Journal of Physics; Conference Series, 443, p.012041_1 - 012041_4, 2013/06
Times Cited Count：0 Percentile：0.21(Physics, Atomic, Molecular & Chemical)Wada, Ken*; Hyodo, Toshio*; Kosuge, Takashi*; Saito, Yuki*; Ikeda, Mitsuo*; Osawa, Satoshi*; Shidara, Tetsuo*; Michishio, Koji*; Tachibana, Takayuki*; Nagashima, Yasuyuki*; et al.
no journal, ,
no abstracts in English
