Zobrazeno 1 - 10 of 26 pro vyhledávání: '"Hirokazu UMEZAWA"'
2
Desorption Behavior of Plutonium from Anion-Exchange Resin with HNO3-HI Mixed Acid Solution
Autor: Satoshi Sakurai, Shigekazu Usuda, Hirokazu Umezawa, Masaru Hirata
Publikováno v: Separation Science and Technology. 25:1225-1237
The effect of HI on the desorption behavior of Pu from strongly basic anion-exchange resin in HNO3 solutions was investigated. The desorption of Pu increased with increasing concentration of HNO3 in HNO3-HI mixed acid solutions. On the other hand, it
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::374b43b3ccdb2f88f89ee7af621a01ae
https://doi.org/10.1080/01496399008051850
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4
Anion exchange equilibrium of uranium and several other elements in mineral acid solutions containing tetrafluoroboric acid
Autor: Shigekazu Usuda, Hirokazu Umezawa
Publikováno v: Journal of Radioanalytical and Nuclear Chemistry Letters. 127:437-446
Volume distribution coefficients /Dv/ were determined for the adsorption of U and several other elements on anion-exchange resin from mixed solutions of tetrafluoroboric acid and nitric acid or hydrochloric acid, and the effect of tetrafluoroboric ac
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ad3f0d8a5ccb8e9cea0725c158bf4cce
https://doi.org/10.1007/bf02166771
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6
Non-Destructive Gamma-Ray Spectrometry on Spent Fuels of a Boiling Water Reactor
Autor: Hirokazu Umezawa, Haruo Natsume, Hiroshi Okashita, Takenori Suzaki, Shojiro Matsuura, Harumichi Tsuruta
Publikováno v: Journal of Nuclear Science and Technology. 12:24-34
The spent fuels from the JPDR-I reactor were measured by means of a γ-scanning facility installed in the fuel storage pool. The spatial distributions of the fission products (134Cs and 137Cs) were measured and analyzed in reference to the effects of
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::50b8be06ad672c63a1ae6499a141ef26
https://doi.org/10.1080/18811248.1975.9733065
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7
Measurement of the spontaneous fission half-life of 242Cm by absolute fission track counting
Autor: Hirokazu Umezawa, Shigekazu Usuda
Publikováno v: International Journal of Radiation Applications and Instrumentation. Part D. Nuclear Tracks and Radiation Measurements. 16:247-251
The partial half-life of 242Cm for spontaneous fission was determined from measurements of the total numbers of fission events and α-decays on highly pure 242Cm sources. Over a given period, the number of fissions occurring was absolutely counted wi
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a1df03b217fb15fbabd03aaa09d89719
https://doi.org/10.1016/1359-0189(89)90024-1
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10
Nondestructive Determination of Trace Amount of Manganese in Steel by Neutron Activation
Autor: Hirokazu Umezawa, Hisashi Mori
Publikováno v: Journal of the Japan Institute of Metals. 24:641-645
Trace amounts of manganese in steel was determined nondestructively by neutron activation analysis using the JRR-1 reactor (neutron flux: 1O/sup 11/n/cm/ sup 2/ - sec). The induced radioactivity of Mn/sup 56/ was measured with a well type scintillati
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b84395c46480d15500dd722714c581df
https://doi.org/10.2320/jinstmet1952.24.10_641
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