Parallel pulse processing for mercuric iodide gamma-ray detectors

Beyerle, A.; Gerrish, V.; Hull, K.

doi:10.1016/0168-9002(86)90443-2

Cited by 11 publications

(1 citation statement)

References 8 publications

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“…Table 1 summarizes some of the important reports from various works [9][10][11][12][13][14][15][16][17][18] on spectroscopic performance of HgI 2 detectors for 662 keV gamma rays. The first part of the table shows results in planar detectors reported till date.…”

Section: Jinst 7 T04002mentioning

confidence: 99%

Digital pulse height correction in HgI₂γ-ray detectors

et al. 2012

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We report on the application of digital pulse processing algorithms to improve the spectroscopic performance of a 1.2 mm thick planar HgI 2 γ-ray detector. We have used offline processing of pulses which were recorded using a high resolution waveform digitizer. The recovery processes include long duration shaping to avoid ballistic deficit in the case of slow pulses, and the application of biparametric correction techniques to compensate for charge loss. Pulses of duration as long as 100 µs were recorded to facilitate long duration shaping. Two different pulse processing algorithms, viz. semi-Gaussian and moving window deconvolution, were applied and their performance was compared. The application of long duration shaping and digital chargeloss correction improved the energy resolution at 662 keV by more than 20% and the peak to background ratio by a factor of two. The resolution and the peak to background ratio were further seen to improve drastically upon rejection of counts with very slow rise-time. A 2.6% energy resolution at 662 keV with 14:1 peak to background ratio was obtained.

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