Reporting detection efficiency for semiconductor neutron detectors: A need for a standard

High-efficiency microstructured semiconductor neutron detectors for direct 3He replacement

“…diameter, 4-atm tube [26]. Unfortunately, this detection efficiency is not uniform across the entire face of the detector.…”

“…The 4-cm 2 MSNDs were patterned with 20-μm-wide trenches and a 40-μm pitch. With this trench layout, and greatly improved fabrication techniques, the MSNDs typically have an intrinsic thermal neutron detection efficiency of 25-30%, as calibrated with a 3 He proportional detector with a thermalized and diffracted neutron beam; measurement method and details described in the literature [26]. The MSNDs were calibrated in the 0.5 mm-diameter thermal neutron beam such that the beam was normal to, and completely incident upon, each of the MSNDs.…”

“…The MSNDs were calibrated in the 0.5 mm-diameter thermal neutron beam such that the beam was normal to, and completely incident upon, each of the MSNDs. The count rate of each MSND tested was compared to that of a calibrated 3 He proportional counter, whereby the MSND detector efficiency was determined [26].…”

Very large area multi-element microstructured semiconductor neutron detector panel array

“…The intrinsic efficiency was determined using a direct comparison method with a calibrated Reuter-Stokes 3 He gas filled proportional detector [19,27]. Diodes were chosen randomly to be tested.…”

Microstructured semiconductor neutron detector (MSND)-based Helium-3 Replacement technology

“…Under such a configuration, the diode is etched with perforations which are backfilled with neutron reactive materials, such as 10 B or 6 LiF. As a result, the intrinsic thermal-neutron detection efficiencies of microstructured diodes have experimentally been shown to exceed 30%, representing a six-fold increase in neutron detection efficiency over their thin-film-coated counterparts [3][4][5].…”