52 Characteristics of Discrete Sn Calculation for Angular Distribution and Scalar Flux of Neutrons Penetrating through Media(Collected Papers Published by Staff of Ship Research Institute at societies and Institutions in 1974)
スポンサーリンク
概要
- 論文の詳細を見る
The significant discrepancies often observed between the discrete Sn calculations and the measurements of the angular flux spectrum of neutrons at an angle of 0° have been studied for the benefit of analyses of time-of-flight measurements. Examination of the uncollided angular flux and scalar flux distribution yielded information on the relation between the accuracies obtainable in the calculations and the order of quadrature set used therein. Predictions on the angular flux in graphite resulting from the use of S_<16>, S_<32> and S_<48> quadratures, and on the scalar flux in water from the S_<16> quadrature were compared with the results of measurements and of PALLAS transport calculations. It was found as a result that the S_<48> quadrature is most suitable for analyzing the 0° angular flux spectrum of the time-of-flight measurements, and that the S_<16> quadrature is sufficient for scalar neutron flux calculations for reactor shields. The spurious fluctuations observed in the ANISN angular distributions are not due to insufficiency in the number of iterations in computation, but to the coarseness of the spatial intervals used.
- 独立行政法人 海上技術安全研究所の論文
- 1975-01-25
著者
-
山路 昭雄
Tokai Branch, Ship Research Institute
-
Takeuchi Kiyoshi
Tokai Branch Ship Research Institute
-
YAMAJI Akio
Tokai Branch, Ship Research Institute
-
Yamaji Akio
Tokai Branch Ship Research Institute
-
竹内 清
Tokai Branch, Ship Research Institute
関連論文
- Experimental Study on Additional Shields for Leakage Gamma Rays from a Duct
- 62 THE OPTIMUM ARRANGEMENT OF LAMINATED IRON-WATER SHIELDS(Collected Papers Published by Staff of Ship Research Institute at societies and Institutions in 1970)
- 51 Neutron Transport Benchmark Calculations, (I) : PALLAS Calculations(Collected Papers Published by Staff of Ship Research Institute at societies and Institutions in 1974)
- 52 Characteristics of Discrete Sn Calculation for Angular Distribution and Scalar Flux of Neutrons Penetrating through Media(Collected Papers Published by Staff of Ship Research Institute at societies and Institutions in 1974)
- Characteristics of Discrete Sn Calculation for Angular Distribution and Scalar Flux of Neutrons Penetrating through Media
- Analysis of neutron and secondary gamma-ray transport in air-over-ground geometry by PALLAS-2DCY-FC code.
- A two-dimensional benchmark experiment for neutron transport in water.
- Comprison between Measured and Design Dose Rate Equivalents on Board of Nuclear Ship MUTSU.
- Gamma-ray energy spectrum calculations for plane perpendicular incident source including annihilation and bremsstrahlung photons.
- Neutron Transport Benchmark Calculations, (I):PALLAS Calculations