Non-linearity of recoil pulse height events in He-3 tubes

Manolopoulou, M.; Fragopoulou, M.; Stoulos, S.; Westmeier, W.; Lagogiannis, Anastasios; Zamani, M.

doi:10.1016/j.nima.2010.02.267

Cited by 2 publications

(1 citation statement)

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“…[8] Neutron capture in 3 He is exothermic with a Q-value of 0.764 MeV; the amplitude of signal pulses resulting from neutron capture corresponds to the sum of this energy plus the incident neutron's energy. These detectors are very sensitive to microphonic noise and electromagnetic interferences but under ideal conditions neutron energy measurements have been made with a resolution of <15 keV, which is the limiting factor for the low-energy range of spectrometry for these detectors.…”

Section: Introductionmentioning

confidence: 99%

Measurement Of The Neutron Spectrum Of A DD Electronic Neutron Generator

Chichester¹,

Johnson²,

Seabury³

2011

AIP Conference Proceedings

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Abstract.A Cuttler-Shalev (C-S) 3 He proportional counter has been used to measure the energy spectrum of neutrons from a portable deuterium-deuterium electronic neutron generator. To improve the analysis of results from the C-S detector digital pulse shape analysis techniques have been used to eliminate neutron recoil artifacts in the recorded data. Data was collected using a 8-GHz, 10-bit waveform digitizer with its full scale corresponding to approximately 6-MeV neutrons. The measurements were made with the detector axis perpendicular to the direction of ions in the ENG in a plane 0.5-m to the side of the ENG, measuring neutrons emitted at an angle from 87.3q to 92.7q with respect to the path of ions in the ENG. The system demonstrated an energy resolution of approximately 0.040 MeV for the thermal peak and approximately 0.13 MeV at the DD neutron energy. In order to achieve the ultimate resolution capable with this type of detector it is clear that a higher-precision digitizer will be needed.

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Section: Introductionmentioning

confidence: 99%