THE INFLUENCE OF DEAD LAYER EFFECT ON THE CHARACTERISTICS OF THE HIGH PURITY GERMANIUM P-TYPE DETECTOR

NGO QUANG HUY1
1 Ho Chi Minh City University of Industry 12 Nguyen Van Bao Street, Ward 4, Go Vap District, Ho Chi Minh City, Viet Nam.

Main Article Content

Abstract

This work presents an overview of the studies of the influence of dead layer effect on the characteristics of a high purity germanium (HPGe) p-type detector, obtained by the author and his colleagues in the recent years. The object for study was the HPGe GC1518 detector-based gamma spectrometer of the Center for Nuclear Techniques, Ho Chi Minh City. The studying problems were: The modeling of an HPGe detector-based gamma spectrometer using the MCNP code; the method of determining the thickness of dead layer by experimental measurements of gamma spectra and the calculations using MCNP code; the influence of material parameters and dead layer on detector efficiency; the increase of dead layer thickness over the operating time of the GC1518 detector; the influence of dead layer thickness increase on the decrease of detector efficiency; the dead layer effect forĀ  the gamma spectra measured in the GC1518 detector.

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References

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