Voltage dependent pulse shape analysis of Geiger-Müller counter

Almutairi, Bader; Akyurek, T.; Usman, Shoaib

doi:10.1016/j.net.2019.02.008

Cited by 12 publications

(10 citation statements)

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“…When all of these properties were added together, it is observed that from 600 to 1200 V, the full positive pulse was exponentially decreasing. This behavior is also in agreement with the findings of our previous study 19 . Table 3 summarizes the statistics of the fit lines in Fig.…”

Section: Rise Timesupporting

confidence: 94%

“…Pulse shape dependence on operating voltage for a GM counter was discussed in detail, but simultaneous deadtime and pulse shape measurements were missing. Therefore, no relationship between deadtime and pulse shape could be deduced from the earlier work 19 .…”

Section: Casementioning

confidence: 95%

“…In an effort to study the generated pulse properties from a GM counter even further, we designed an experiment that used two different radioactive sources ( 60 Co and 137 Cs). The details of the study were discussed and can be found in a recently published study 19 . The recommended operating voltage specified by the manufacturer for that particular GM detector (Ludlum, model 133-2) was 550 V. A wide range of voltages from 300 to 1000 V was examined in the previous study.…”

Section: Casementioning

confidence: 99%

“…Previous studies attempted to obtain a relationship between applied high voltage and deadtime 7,19 , but the relationship between pulse shape properties and deadtime for GM detector has not been investigated. Therefore, a comprehensive experimental campaign was designed and executed to collect data on deadtime and the various parameters describing the pulse shape.…”

Section: Rise Timementioning

confidence: 99%

“…In the radiation measurement community, it is widely believed that the pulses produced in a GM detector carry no useful information since the generated pulses have the same amplitude 4,16 . However, this belief has been questioned by recent studies where pulse shape properties were investigated with varying applied voltages 7,19 . It is worth noting that Akyurek et al 7 investigation of the pulse shape was performed to confirm the hypothesis that at low voltages, deadtime decreases with increasing voltages until a plateau is reached, and after that, at higher voltages, deadtime increases.…”

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confidence: 99%

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Simultaneous experimental evaluation of pulse shape and deadtime phenomenon of GM detector

Almutairi

Alam

Goodwin³

et al. 2021

Sci Rep

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Analysis of several pulse shape properties generated by a Geiger Mueller (GM) detector and its dependence on applied voltage was performed. The two-source method was utilized to measure deadtime while simultaneously capturing pulse shape parameters on an oscilloscope. A wide range of operating voltages (600–1200 V) beyond the recommended operating voltage of 900 V was investigated using three radioactive sources (204Tl, 137Cs, 22Na). This study investigates the relationship between operating voltage, pulse shape properties, and deadtime of the detector. Based on the data, it is found that deadtime decreases with increasing voltage from 600 to 650 V. At these low voltages (600–650 V), the collection time was long, allowing sufficient time for some recombination to take place. Increasing the voltage in this range decreased the collection time, and hence deadtime decreased. It is also observed that rise and fall time were at their highest at these applied voltages. Increasing the voltage further would result in gas multiplication, where deadtime and pulse width are observed to be increasing. After reaching the maximum point of deadtime (~ 250 µs at ~ 700 V), deadtime started to exponentially decrease until a plateau was reached. In this region, it is observed that detector deadtime and operating voltage show a strong correlation with positive pulse width, rise and fall time, cycle mean, and area. Therefore, this study confirms a correlation between detector deadtime, operating voltage, and pulse shape properties. The results will validate our hypothesis that deadtime phenomena at different operating voltages are phenomenologically different.

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Section: Rise Timesupporting

confidence: 94%

Section: Casementioning

confidence: 95%

Section: Casementioning

confidence: 99%

Section: Rise Timementioning

confidence: 99%

mentioning

confidence: 99%

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