Measurements of the response function of silicon diode detectors for heavy ions using a time of flight technique

Ghetti, R.; Jakobson, Bo; Whitlow, Harry J.

doi:10.1016/0168-9002(92)90613-9

Cited by 13 publications

(1 citation statement)

References 29 publications

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“…Detection of ionizing particles with high energy loss in solid state detectors may lead to a pronounced pulse height defect (PHD) [38,[43][44][45][46][47], which is defined as the energy difference ΔE between the kinetic energy E k deposited by an incident ion impinging the detector and the apparent energy E DD derived from the measured electric signal [38]:…”

Section: Pulse Height Defectmentioning

confidence: 99%

Characterization of Diamond and Silicon Carbide Detectors With Fission Fragments

et al. 2021

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Experimental fission studies for reaction physics or nuclear spectroscopy can profit from fast, efficient, and radiation-resistant fission fragment (FF) detectors. When such experiments are performed in-beam in intense thermal neutron beams, additional constraints arise in terms of target-detector interface, beam-induced background, etc. Therefore, wide gap semi-conductor detectors were tested with the aim of developing innovative instrumentation for such applications. The detector characterization was performed with mass- and energy-separated fission fragment beams at the ILL (Institut Laue Langevin) LOHENGRIN spectrometer. Two single crystal diamonds, three polycrystalline and one diamond-on-iridium as well as a silicon carbide detector were characterized as solid state ionization chamber for FF detection. Timing measurements were performed with a 500-µm thick single crystal diamond detector read out by a broadband amplifier. A timing resolution of ∼10.2 ps RMS was obtained for FF with mass A = 98 at 90 MeV kinetic energy. Using a spectroscopic preamplifier developed at INFN-Milano, the energy resolution measured for the same FF was found to be slightly better for a ∼50-µm thin single crystal diamond detector (∼1.4% RMS) than for the 500-µm thick one (∼1.6% RMS), while a value of 3.4% RMS was obtained with the 400-µm silicon carbide detector. The Pulse Height Defect (PHD), which is significant in silicon detectors, was also investigated with the two single crystal diamond detectors. The comparison with results from α and triton measurements enabled us to conclude that PHD leads to ∼50% loss of the initial generated charge carriers for FF. In view of these results, a possible detector configuration and integration for in-beam experiments has been discussed.

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