Academic
Publications
The use of large area silicon sensors for thermal neutron detection

The use of large area silicon sensors for thermal neutron detection,10.1016/0168-9002(94)91617-9,Nuclear Instruments & Methods in Physics Research Sec

The use of large area silicon sensors for thermal neutron detection   (Citations: 4)
BibTex | RIS | RefWorks Download
The use of large area planar silicon detectors coupled with gadolinium foils has been investigated to develop a thermal neutron detector having a large area-efficiency (A ε) product. Noise levels due to high detector capacitance limit the size of silicon detectors that can be utilized. Calculations using the Monte Carlo code, MCNP, have been made to determine the variation of intrinsic detection efficiency as a function of the discriminator threshold level required to eliminate the detector noise. Measurements of the noise levels for planar silicon detectors of various resistivities (400, 3000 and 5000 Omega cm) have been made and the optimal detector area-efficiency products have been determined. The response of a Si-Gd-Si sandwich detector with areas between 1 cm2 and 10.5 cm2 is presented and the effects of the detector capacitance and reverse current are discussed.
Cumulative Annual
View Publication
The following links allow you to view full publications. These links are maintained by other sources not affiliated with Microsoft Academic Search.
    • ...The (n,g) reactions yield numerous low energy conversion electrons, with a general distribution ranging from 29 up to 246 keV (Schulte et al., 1994)...
    • ...However, the largest yields are from conversion electrons with energies near 70 keV, with all other energy emissions above 85 keV having much lower branching efficiencies (Schulte et al., 1994)...

    D. S. McGregoret al. Perforated diode neutron detector modules fabricated from high-purity ...

    • ...Large-area amorphous silicon flat panel readouts with gadolinium foil converters ( Gd and Gd) have been used for neutron imaging [12]...

    V. V. Nagarkaret al. Structured LiI scintillator for thermal neutron imaging

    • ...With the LLD set at 100 keV to eliminate gamma ray background and electronic noise, single coated devices yield detection efficiencies of only a few percent [10], actually less than achievable than a single coated 10B- or LiF-coated device [8]...
    • ...simple sandwich designs further indicate that the maximum obtainable efficiency is only 3% with the LLD set at 100 keV, increasing to only 12.5% if the LLD is reduced to 50 keV [10]...
    • ...4784 devices. Many groups have reported on Gd-coated devices [10-14]...

    D. S. McGregoret al. Recent Results From Thin-Film-Coated Semiconductor Neutron Detectors

Sort by: