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Nakano, Masaki*; Oishi, Tomoji*; Watanabe, Masayuki; Aoyagi, Noboru
no journal, ,
no abstracts in English
Miyagai, Natsuki*; Tsuchimoto, Masanobu*; Watanabe, Masayuki; Nakajima, Kiyohiko*
no journal, ,
no abstracts in English
Kobayashi, Takanori; Hashimoto, Masashi; Yokoyama, Keiichi
no journal, ,
To investigate the possibility of the Cs exchange reaction between CsI molecule and Cs atom, we have analyzed the Cs-I-Cs triatomic molecule by using quantum chemistry calculation. And, by using the newly developed capture model, the Cs exchange reaction rate and its temperature dependence were also estimated. The stabilization energy for CsICs formation is calculated as 12 kcal mol
, which is much smaller than the calculated Cs-I bond energy of 82 kcal mol-1(spin-orbit correlation is not included). However, the bond lengths of both Cs-I are optimized as the same value (3.57 A). That is, Cs of CsI and colliding Cs atom cannot be distinguished if the triatomic structure is formed. And 2-dimensional potential energy surface around CsI against Cs atom shows that the reaction has no entrance barrier. The reaction rate was estimated to be the same value as the collision rate and little temperature dependence would be expected.
Aoyagi, Noboru; Watanabe, Masayuki; Kirishima, Akira*; Sato, Nobuaki*; Kimura, Takaumi
no journal, ,
Shimojo, Kojiro; Naganawa, Hirochika
no journal, ,
no abstracts in English
Shimojo, Kojiro; Nakai, Ayaka*; Ohashi, Akira*; Naganawa, Hirochika
no journal, ,
no abstracts in English
Honda, Mitsunori; Shimoyama, Iwao; Baba, Yuji; Okamoto, Yoshihiro; Yaita, Tsuyoshi
no journal, ,
no abstracts in English
Fukasawa, Hideyuki*; Hasegawa, Shin; Maekawa, Yasunari
no journal, ,
The development of polymer electrolyte membranes (PEMs) with both high proton conductivity at low relative humidity (RH) and excellent mechanical properties at high RH were required for commercialization of fuel cells. We have reported the successful preparation of highly conducting and mechanically stable grafted-type (PEMs) based on an aromatic hydrocarbon polymer, poly(ether ether ketone) (PEEK). Since polymer membranes are reinforced mechanically by the hybridization with inorganic nano-particles, we investigated the radiation induced grafting speed of ethyl p-styrenesulfonate (ETSS) onto hybrid films consisting of PEEK and inorganic nanoparticles such as silica, magnesium oxide, and aluminum oxide and the effects of inorganic nano-particles on proton conductivity and mechanical properties of the synthesized hybrid PEEK films.
Sato, Tetsuya; Asai, Masato; Sato, Nozomi; Kaneya, Yusuke; Tsukada, Kazuaki; Toyoshima, Atsushi; Oe, Kazuhiro*; Miyashita, Sunao*; Nagame, Yuichiro; Sch
del, M.; et al.
no journal, ,
The first ionization potential of the heaviest actinide elements have not been measured until today owing to short half-lives and low production rates of the isotopes. Based on the surface ionization technique, we performed a measurement of the ionization potential of the heaviest actinide element, lawrencium (Lr, 
), by using a newly developed surface ion-source installed to the JAEA-ISOL(Isotope Separator On-Line) at the JAEA tandem accelerator facility. We report on an evaluation of the IP value of Lr based on comparison of ionization behavior of short-lived lanthanide isotopes and 
Lr on Ta surface at several temperature in the ion-source.