Author: John Joseph O'DonnellPublisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 80
Book Description
The Determination of Neutron Flux in the Texas A & M Triga Reactor During Pulse and Steady-state Operations
Author: John Joseph O'DonnellPublisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 80
Book Description
Development of an In-core Neutron Monitoring System and Characterization of the University of Texas at Austin TRIGA Reactor Steady-state Neutron Flux Variations for Use with Neutron Activation Analysis
Author: Matthew Brian StokleyPublisher:
ISBN:
Category :
Languages : en
Pages : 316
Book Description
The pneumatic NAA facility within The University of Texas at Austin is widely used for the measurement of trace elemental concentrations. It has been shown for extremely short duration NAA irradiations, sample activation measurements can vary by up to 12% from normalized values. The typical university research reactor’s external neutron monitoring instruments are unable to detect small, localized variations in neutron population likely resulting in the observed error. The primary method to reduce this uncertainty is to irradiate traceable flux monitor samples in addition to the experimental samples to be analyzed. This method doubles the required sample prep, measurement, and analysis effort. An in-core neutron monitoring system was designed and installed adjacent to the pneumatic NAA sample system terminus to track these localized fluctuations. This design consists of a miniature in-core fission chamber fitted through the upper grid plate of the reactor core. The system is controlled by a NI LabVIEW data logging application. This system provides the capability of monitoring sample irradiance in real-time. In preliminary testing, the system was able to track short irradiation NAA sample variance to within 3% of normalized values. Thus, a significant reduction in the uncertainty of NAA measurements for trace elemental concentrations is achievable.
Neutron Flux and Spectra Measurements in the Void Tank of the TRIGA Mark-F Reactor
Author: K. C. HumpherysPublisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 22
Book Description
Analysis of Neutron Flux in the Shielding of the Sodium Reactor Experiment
Author: F. L. FillmorePublisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 34
Book Description
Determination of Spatial and Spectral Distribution of Neutron Flux in the Texas A and M Nuclear Science Center Reactor Exposure Cell
Author: R. F. SchumacherPublisher:
ISBN:
Category :
Languages : en
Pages : 18
Book Description
Measurements were performed at the Nuclear Science Center to determine neutron flux distribution in the exposure cell. Both spatial and spectral flux variations were determined using neutron activation detectors. Results indicate hardening effects, and that 80%-90% of the total integral flux in the cell is due to neutrons having energies greater than 10 keV, indicating an intermediate spectrum. Results also indicate that the total integral flux increases near the concrete walls because of scattering. (Author).
Elementary Estimation of Neutron Flux in the Circulating System of the ISHR
Author: Melvin TobiasPublisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 8
Book Description
A Determination of the Neutron Temperature at the Center of the Thermal Test Reactor
Author: G. B. GavinPublisher:
ISBN:
Category : Thermal neutrons
Languages : en
Pages : 42
Book Description
Measurement of Neutron Flux and Spectra for Physical and Biological Applications
Author: National Committee on Radiation Protection and Measurements (U.S.)Publisher:
ISBN:
Category : Neutrons
Languages : en
Pages : 104
Book Description
Measurement of Neutron Flux and Spectra for Physical and Biological Applications
Author: National Committee on Radiation Protection and Measurements (U.S.)Publisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 104
Book Description
Neutron Flux Mapping by Large Detectors
Author: D. R. HarrisPublisher:
ISBN:
Category : Neutron flux
Languages : en
Pages : 22
Book Description