Measurements of Neutron Thermalization Time Constant of Light Water by Pulsed Neutron Method
スポンサーリンク
概要
- 論文の詳細を見る
The thermalization parameters of light water have been measured using 'a pulsed neutron source and non-1/v absorbers (Cd, Gd and Sm). The pulsed neutron source utilizing the D-D reaction was placed at the center of an effectively infinite system of water poisoned with non-1/vabsorbers. The time dependent capture γ-rays from these absorbers were detected by a NaI(T1) scintillation counter. The neutron thermalization time constant of right water was determined to be 5.3±0.3μsec from the difference of the decaying reaction rates of the γ-rays, expressed asthe sum of two asymptotical exponential components. The resulting value was larger than that of Moller's experiment (4.1±0.4μsec), but agreed fairly well with the theoretical value of 5.6μsec, calculated by Hoshino based on the Nelkin model. A supplementary experiment was performed using thick neutronic filters of Cd and Ag.
- 一般社団法人 日本原子力学会の論文
著者
-
Sumita Kenji
Department Of Nuclear Engineering Faculty Of Engineering Osaka University
-
FUJINO Michihira
Department of Nuclear Engineering, Faculty of Engineering, Osaka University
関連論文
- "OKTAVIAN-I, II. As D-T Neutron Sources for Studies of Radiation Effects on Plasma Diagnostics"
- Method for Calculating Anisotropic Neutron Transport Using Scattering Kernel without Polynomial Expansion
- Fusion Neutron Irradiation Effects on Some Diagnostic Devices
- Neutron transport calculations by using double-differential cross sections.
- Fusion Neutron Damage in Optical Fibers
- Measurements of Neutron Thermalization Time Constant of Light Water by Pulsed Neutron Method
- A Sinusoidal Neutron Source by Pulse Frequency Modulation of a Pulsed Neutron Source
- Some Investigations of the Effect of "Bragg Continuum" on Wave Propagation Experiments in Graphite
- Reactor Neutron Fluctuation Simulator Using Pulsed Neutron Source
- Measurements of double differential neutron emission cross sections for fusion reactor candidate elements.
- Effects of fusion neutron irradiation on photomultiplier tubes.
- Neutronics experiments of D-T fast neutrons by application of associated particle method.
- Measurement of radioactivity in aluminum alloys and stainless steel irradiated by 14-MeV D-T neutrons.
- Measurements of Time Dependent Energy Spectra of Neutrons in a Small Graphite Assembly
- Fusion neutron irradiation test for optical fibers and optoelectronic devices.
- Measurements of time-dependent neutron spectra from low-temperature ice block.
- Calculational study of time-dependent neutron spectra in ice at low temperature.