(a) Dark latest with the fabricated SCD and PCD detectors; (b) Photocurrent with the fabricated SCD and PCD detectors applying X-rays irradiation from Ag target less than distinct tube voltages Using the similar beam depth.
Pulse shape for an α particle absorbed in the SCD and PCD detector using the broadband diamond amplifier.
Dim present and photocurrent are crucial approaches to characterize the electrical Houses with the radiation detector. Fig. five(a) and (b) clearly show the dim present-day (Id) density and photocurrent (Ip) density for every unit location in the electrode pad of The 2 diamond detectors we fabricated by using their IV curves. The photocurrent was measured underneath X-ray radiation developed from an Ag target using a tube operated at 10kV and 40kV acceleration voltage with equal currents. It is actually observed that the dark present is linear Together with the utilized field for that fabricated SCD detector however the PCD detector is nonlinear more than The full voltage variety calculated and results in being somewhere around linear for that much larger utilized fields.
Fig. six demonstrates the heart beat shape from the broadband amplifier for a normal α particle event from the fabricated SCD and PCD detectors respectively once the bias voltage was 200V.
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In addition, Though the PCD detector With this do the job didn't complete together with the fabricated SCD detector, it would be fascinating to discover doable ways to improve them, including growing the grain size, lowering the film thickness, performing pre-irradiation Procedure And perhaps tests the result of different polycrystalline textures. We have been presently Performing in these directions.
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These results strongly show the feasibility of the design and fabrication treatment applying electronic grade diamond for X-ray and α particle detectors. This study also exhibits The nice potential of the detector as being a neutron spectrometer or thermal neutron detector with suitable coating of conversion levels to the diamond movie.
Pulse top spectra of your 3 detectors irradiated with an 241Am α supply. The voltage from the detector was established to optimum benefit and the information was post-processed (smoothed) to minimize the overlap. Insert: Geant four simulation of the incoming α particle spectrum.
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