Abstract:
Background Portable alpha-associated deuterium-tritium (DT) neutron generators have extensive application potential in fields such as nuclear physics experiments, homeland security, and nuclear safeguards and assay.
Purpose This study aims to evaluate the correlated neutron distribution characteristics of a domestically developed compact portable alpha-associated DT neutron generator, providing critical technical support for its design validation, manufacturing quality control, and engineering applications.
Methods A specialized measurement system was established, comprising of a liquid scintillator detector, a high precision displacement mechanics, and a coincidence measurement digitizer. This system was used to quantify the spatial extent of the correlated neutron emission region and the corresponding solid angle coefficients.
Results Experimental measurements on two neutron generators revealed a measurable difference in their correlated neutron distribution areas, with an approximate 15% variation in the effective correlation region.
Conclusions This study provides essential technical support for both the design validation and quality control testing in the manufacturing of this type of compact portable neutron generator. It also offers valuable reference data for engineering applications by end-users.
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