Status of studies on HLW glass performance for confirming its validity in assessment

Inagaki, Yaohiro*; Mitsui, Seiichiro*; Makino, Hitoshi*; Ishiguro, Katsuhiko*; Kamei, Gento*; Kawamura, Kazuhiro*; Maeda, Toshikatsu; Ueno, Kenichi*; Bamba, Tsunetaka*; Yui, Mikazu*

Genshiryoku Bakkuendo Kenkyu, 10(1-2), p.69 - 84, 2004/03

https://doi.org/10.3327/jnuce.10.69

no abstracts in English

Hydraulic characteristics of buffer material-II; The influence which saline water exert on hydraulic properties of bentonite buffer material

Kikuchi, Hirohito*; Tanai, Kenji; Matsumoto, Kazuhiro*; Sato, Haruo; Ueno, Kenichi; Tetsu, Takeshi*

JNC TN8430 2003-002, 47 Pages, 2003/03

JNC-TN8430-2003-002.pdf:2.11MB

By the second progress report(H12) on research and development for the geological disposal of HLW in Japan, Japan Nuclear Cycle Development Institute (JNC) extended the database on basic properties of compacted bentonite, and this was mainly obtained by using distilled water as test fluid. This report presents influence of dry densities, silica sand content and temperature on the hydraulic properties of compacted bentonite under condition of marine-based groundwater, which was simulated by use of synthesized seawater. We found that hydraulic conductivity increases with increasing temperature, and the relationship between effective clay density and intrinsic permeability is obtained by the following equation. = exp(-47.155 + 15.138 -7.878 ) where is intrinsic permeability[m], is effective clay density[Mg/m]. Intrinsic permeability using synthetic seawater as test fluid is about ten times higher then that under distilled water condition. Difference between them however becomes smaller with increasing dry density. We also examined the smectite layers distance after test samples, but remarkable change was not found between them.

FBR fuel reprocessing plused column equipment test; Operating characteristics of pulsed ploto columms on the condition of the qqueous continous phase

*; Kishimoto, Yoichiro; Kawata, Tomio*; Hayashi, Shotaro; *; Kitamura, Koichiro; Ojima, Hisao; *; *; Ueno, Kazuhiro

PNC TN8410 87-081, 98 Pages, 1986/12

PNC-TN8410-87-081.pdf:9.76MB

no abstracts in English

Excitation functions for fusion reaction with projectiles of different deformation

Toda, Kosuke*; Ueno, Shingo*; Takahashi, Naruto*; Kasamatsu, Yoshitaka*; Yokokita, Takuya*; Oe, Kazuhiro; Yokoyama, Akihiko*

no journal, , 

In order to study the effect of the degree of deformation on the fusion reaction, we have researched for the fusion reaction of Lu + O and Ho + Ne. In the systems, the projectile nucleus O is spherical, while Ne is deformed. Thus they are fusion reactions of deformed-spherical nuclei and deformed-deformed nuclei, respectively. Besides, latter system has the same compound nucleus, Ir, as the Tm + O reaction in previous work. The evaporation residue cross sections were measured by using a stack technique and a gas-jet technique for the projectile energies of 50 to 155 MeV. The cross sections were compared with the theoretical values calculated by HIVAP code. The measured excitation functions were found to agree fairly well with theoretical values. The results are consistent with the idea that the degree of deformation makes an effect on the rising edge of excitation functions near the Coulomb barrier.