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Volume 5, Issue 7
Displaying 1-12 of 12 articles from this issue
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Fumio HARA, Heki SHIBATA1968 Volume 5 Issue 7 Pages 323-332
Published: July 25, 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSThe optimization of a nuclear converter core in respect of thermal power, power peaking and fuel conversion ratio is studied from the aspect of neutron flux distribution. It is shown that flatten-ing the neutron flux distribution maximizes the thermal power output. A mathematical approach to the problem of flattening the neutron flux distribution is presented for a regionized reactor. Minimiza-tion of power peaking at the border of the region of flattened flux is considered with one- and two-group approximations. The analyses on one dimensional model has led to the result that the optimal reactor should be three-regional.View full abstractDownload PDF (582K) -
Kazuhiko INOUE1968 Volume 5 Issue 7 Pages 333-341
Published: July 25, 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSThe neutron spectrum in a fast reactor is formulated from a new approach for an infinite homogeneous medium and is given in a form that allows explicit evaluation of each scattering col-lision process. Mathematically, the procedure is equivalent to that based on the balance equation. Numerical evaluation indicates that there exists only small probability of a neutron undergoing inelastic scattering more than several times. Applying the formulas thus derived, an approximate representation of the spectrum has been obtained in a simple form, and which includes the multi-ple inelastic scattering effects.View full abstractDownload PDF (582K) -
Kiyoshi TAKEUCHI, Iwao KATAOKA1968 Volume 5 Issue 7 Pages 342-349
Published: July 25, 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSA method is presented for solving neutron transport problems in slab geometry with the applica-tion of discrete ordinates numerical integration to the Boltzmann transport equation.
Neutron spectra for water, iron and carbon layers are calculated and compared with experimental data. Good agreement is obtained between computed and measured values for both angular distribu-tions and the energy spectra of neutrons. The calculated neutron spectra in an iron-water layer are also presented as an example of solutions derivable for neutron transport problems in multi-layered shield.View full abstractDownload PDF (494K) -
Tatsuo MATSUURA, Akira ISHIWARA1968 Volume 5 Issue 7 Pages 350-353
Published: July 25, 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSAs a contribution to the dynamic irradiation-elution method using ion-exchanger, in which, duringthe progress of irradiation, the product resulting from irradiation is immediately separated upon recoilfrom the complex-ion target adsorbed on an ion-exchanger, the concentration of the separable recoilingspecies remaining in the bead and the film of the ion-exchanger in stationary condition was derivedtheoretically as a function of bead radius, with parameters to account for various others factors suchas initial yield, film thickness, recombination rate constant of the recoiling species, and their diffusioncoefficients. The equation derived for the separable yield was applied successfully to the analysisof experimental results obtained on trioxalatochromium ion adsorbed on an ion-exchange resin.View full abstractDownload PDF (265K) -
Itaru MICHIYOSHI, Tsuyoshi NAKAJIMA1968 Volume 5 Issue 7 Pages 354-359
Published: July 25, 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSThis paper deals with an analysis of the characteristics of fully developed turbulent Newtonian flow in a concentric annulus. The time-averaged velocity distribution, mixing length, eddy diffusivity and friction factor are calculated on the bases of Reichardt's expression for the eddy diffusivity of momentum and of Nikuradse's expression for the mixing length in a circular tube. These predictions agree well with available experimental data.View full abstractDownload PDF (341K) -
Toshiyuki NAKAJIMA1968 Volume 5 Issue 7 Pages 360-364
Published: July 25, 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSA thermoluminescent dosimeter of the thin film of CaSO4(Mn) was prepared and its optical and dosimetric properties were investigated.
Glow curve, transmission and thermoluminescent spectra as optical properties of the film phos-phors were measured, and these properties were suitable for the dosimetry.
Energy dependence, linearity of the dose and the fading as the dosimetric properties were meas-ured. Measurable minimum dose of the film phosphors was about 10-3R and their energy depend-ence on the low or high energy electrons was found.View full abstractDownload PDF (310K) -
1968 Volume 5 Issue 7 Pages 364a
Published: 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSDownload PDF (55K) -
1968 Volume 5 Issue 7 Pages 364b
Published: 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSDownload PDF (55K) -
Monkey Project, Part IKazuhiko WAKASUGI, Takanori SHIMOOKE, Atsuyoshi MORISHIMA1968 Volume 5 Issue 7 Pages 365-373
Published: July 25, 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSIrradiation tests on a fuel rod in locally enhanced heat flux were undertaken in the Japan Power Demonstration Reactor, with the use of a modified form of the experimental fuel assembly TA# 2R. The report covers design calculations for this test fuel assembly, out-pile experiments and analysis. of various safety problems related to in-core irradiation of the assembly (effects of fuel loading on surrounding core), and it is shown that it is possible to irradiate the fuel rod in heat flux as high as 500, 000 Btu/hr •ft2.View full abstractDownload PDF (713K) -
Yukichi TAJI, Keiichi SAITO1968 Volume 5 Issue 7 Pages 374-376
Published: July 25, 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSDownload PDF (164K) -
Nobuhide SUDA1968 Volume 5 Issue 7 Pages 377-378
Published: July 25, 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSDownload PDF (128K) -
Gohzoh INABA1968 Volume 5 Issue 7 Pages 378-380
Published: July 25, 1968
Released on J-STAGE: April 18, 2008
JOURNAL FREE ACCESSDownload PDF (168K)
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