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2 results on '"DT neutron generator"'

1. Neutron moderator structure improvement of a PGNAA online analysis system based on DT neutron generator.

Author

Cai, Pingkun, Hei, Daqian, Jia, Wenbao, Li, Jiatong, Cheng, Can, Sun, Aiyun, Zhao, Dong, Wang, Liangzi, and Wang, Xingbo

Subjects
NEUTRON flux, NEUTRONS, NUCLEAR activation analysis, NEUTRON generators, THERMAL neutrons, HEAT flux, HIGH density polyethylene
Abstract

The neutron moderator structure of a prompt gamma-ray neutron activation analysis (PGNAA) system based on a deuterium–tritium (DT) neutron generator was re-optimized. In this study, a 1 cm lead combined with a 2 cm high-density polyethylene (HDPE) was set as a new moderator. The thermal neutron flux, fast neutron flux of more than 6 MeV and total neutron flux in the samples increased by 22%, 41% and 41%, respectively. The signal-to-interference ratio (SIR) increased from 15 to 19%. The measurement results with samples containing different element contents indicated that the detection sensitivity of the analyzer with the new moderator structure was significantly improved. [ABSTRACT FROM AUTHOR]

Published
2023
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2. The intensive DT neutron generator of TU Dresden.

Author

Klix, Axel, Döring, Toralf, Domula, Alexander, and Zuber, Kai

Subjects
NEUTRON generators, TRITIUM handling, LIQUID scintillators, NUCLEAR fuels
Abstract

TU Dresden operates an accelerator-based intensive DT neutron generator. Experimental activities comprise investigation into material activation and decay, neutron and photon transport in matter and R&D work on radiation detectors for harsh environments. The intense DT neutron generator is capable to produce a maximum of 1012 n/s. The neutron source is a solid-type water-cooled tritium target based on a titanium matrix on a copper carrier. The neutron yield at a typical deuteron beam current of 1 mA is of the order of 1011 n/s in 4π. A pneumatic sample transport system is available for short-time irradiations and connected to wo high-purity germanium detector spectrometers for the measurement of induced activities. The overall design of the experimental hall with the neutron generator allows a flexible setup of experiments including the possibility of investigating larger structures and cooled samples or samples at high temperatures. [ABSTRACT FROM AUTHOR]

Published
2018
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