Impurity correction factor of MnSO4 compound for the determination of neutron emission rate on the manganese bath method

1999 ◽  
Vol 239 (3) ◽  
pp. 605-608 ◽  
Author(s):  
Kil-Oung Choi ◽  
Young-Seok Lee ◽  
Sun-Tae Hwang ◽  
Kwang-Pil Lee ◽  
Keung-Shik Park
Keyword(s):  
Correction Factor ◽  
Emission Rate ◽  
Neutron Emission ◽  
Manganese Bath

ABSOLUTE STANDARDIZATION OF RADIOACTIVE NEUTRON SOURCES: I. ACTIVATION OF MANGANESE BATH

1959 ◽  
Vol 37 (3) ◽  
pp. 256-262 ◽  
Author(s):  
K. W. Geiger ◽  
G. N. Whyte
Keyword(s):  
Research Council ◽  
Emission Rate ◽  
Neutron Emission ◽  
International Comparisons ◽  
National Research Council ◽  
National Bureau ◽  
Neutron Sources ◽  
Manganese Bath ◽  
Absolute Standardization

The neutron emission rate of a Ra-α-Be source of the National Research Council has been measured by moderating the neutrons in manganese sulphate solution surrounding the source. Some of the thermal neutrons captured in the bath produce manganese-56, and the neutron emission rate is found from an absolute determination of the resulting activity. A number of corrections are discussed in detail. The value of (3.22 ± 0.05) × 106 neutrons per second found for the neutron emission rate shows satisfactory agreement with the results of our intercomparison with the primary neutron standard of the National Bureau of Standards, and allows a tie-in with a series of international comparisons of primary neutron sources.

scholarly journals Determination of the emission rate for the 14 MeV neutron generator with the use of radio-yttrium

Nukleonika ◽  
2015 ◽  
Vol 60 (2) ◽  
pp. 319-322 ◽  
Author(s):  
Ewa Laszynska ◽  
Slawomir Jednorog ◽  
Adam Ziolkowski ◽  
Michal Gierlik ◽  
Jacek Rzadkiewicz
Keyword(s):  
Neutron Generator ◽  
Reaction Rate ◽  
Emission Rate ◽  
Neutron Emission ◽  
Reaction Cross ◽  
Activation Method ◽  
Neutron Diagnostics ◽  
The Stability ◽  
Working Parameters

Abstract The neutron emission rate is a crucial parameter for most of the radiation sources that emit neutrons. In the case of large fusion devices the determination of this parameter is necessary for a proper assessment of the power release and the prediction for the neutron budget. The 14 MeV neutron generator will be used for calibration of neutron diagnostics at JET and ITER facilities. The stability of the neutron generator working parameters like emission and angular homogeneity affects the accuracy of calibration other neutron diagnostics. The aim of our experiment was to confirm the usefulness of yttrium activation method for monitoring of the neutron generator SODERN Model: GENIE 16. The reaction rate induced by neutrons inside the yttrium sample was indirectly measured by activation of the yttrium sample, and then by means of the γ-spectrometry method. The pre-calibrated HPGe detector was used to determine the yttrium radioactivity. The emissivity of neutron generator calculated on the basis of the measured radioactivity was compared with the value resulting from its electrical settings, and both of these values were found to be consistent. This allowed for a positive verification of the reaction cross section that was used to determine the reaction rate (6.45 × 10−21 reactions per second) and the neutron emission rate (1.04 × 108 n·s−1). Our study confirms usefulness of the yttrium activation method for monitoring of the neutron generator.

scholarly journals Experimental determination of stereotactic cone size and detector specific output correction factor

2017 ◽  
Vol 90 (1077) ◽  
Author(s):  
Dayananda Shamurailatpam Sharma ◽  
Rahul Kumar Chaudhary ◽  
Sunil Dutt Sharma ◽  
Shaju Pilakkal ◽  
Sachin K Rasal ◽  
...  
Keyword(s):  
Experimental Determination ◽  
Correction Factor ◽  
Specific Output

Application of Thermal Sensors for Determination of Mass Flow Rate and Velocity of Flow in Pipes of Hermetic Systems

2019 ◽  
Vol 826 ◽  
pp. 117-124
Author(s):  
Yurii Baidak ◽  
Iryna Vereitina
Keyword(s):  
Temperature Distribution ◽  
Mass Flow Rate ◽  
Cross Section ◽  
Correction Factor ◽  
Mass Flow ◽  
Flow Rate ◽  
Thermal Sensors ◽  
Pipe Surface ◽  
Pipe Cross Section

The paper relates to the field of measuring technologies and deals with the enhancement of thermoconvective method when it is applied for the experimental determination of such hydrodynamics indicators as mass flow rate and velocity of flow by their indirect parameters - capacity of the heater and the temperatures obtained from two thermal sensors, provided that they are located on the hermetic piping system surface. The issue of determination of correction factor on heterogeneity of liquid temperature distribution in the pipe cross section depending on pipe diameter and fluid movement velocity was clarified. According to the results of numerical calculations, the dependencies of temperature gradient on the pipe surface and the correction factor on the heterogeneity of the temperature distribution along the pipe cross-section under the heater in the function of the velocity of flow in pipes of different diameters are plotted. These dependencies specify the thermal method of studying the fluid flow in the pipes, simplify the experiment conduction, are useful in processing of the obtained results and can be applied in measuring engineering.

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