A New Technique for Gaseous Radiation Detectors: The Multigrid High-Pressure Xenon Gas Proportional Scintillation Counter

Borges, F.I.G.M.; Carmo, S.J.C. do; Mariquito, João Carlos Raimundo; Trindade, A.M.F.; Conde, C.A.N.

doi:10.1109/tns.2010.2052930

Cited by 5 publications

(9 citation statements)

References 11 publications

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“…From these values G was calculated and these results are presented in Fig. 3 together with the estimated theoretical gains for the planar geometry prototype [4] and for the present cylindrical one using the expression presented in [5]. In this case, the values used in [5] for the photoelectron extraction efficiency were revised to include the backscattering effect in collisions with the atoms of the medium [6], which reduces it to about 1.5%.…”

Section: Detector Gainmentioning

confidence: 99%

“…In a recent work [4] a multi-grid high-pressure gas proportional scintillation counter (MGHP-GPSC) has used a CsI photocathode film as light to charge transducer instead of the traditionally adopted PMT. Nevertheless the prototype presented some problems, namely the small absorption length and electrical discharges [4], which motivated the development of another prototype of a different geometry [5]. The results of the performance of this new prototype for alpha particles are presented in the next sections.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dual-Stage Gas Proportional Scintillation Counter — Concept and Experimental Results

Cortez

Conde

Carmo

et al. 2019

Proceedings of the Second International Symposium on Radiation Detectors and Their Uses (ISRD2018)

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In this work a new prototype of a HPXe detector for charged particles, hard X-rays and gamma-rays is presented. This new detector consists of a high-pressure xenon based dual-stage gas proportional scintillation counter with a cylindrical geometry. The detection of ionizing radiation relies on secondary scintillation as the amplification stage followed by the production of photoelectrons in a photosensitive material, which is in direct contact with the gas. This work presents the first tests with alpha particles (241 Am 5.486 MeV), namely the energy resolution obtained of about 6.8%, and a gain of about 5 at a pressure of 3 bar. With these results, a gain of about 25 at 15 bar is expected, resulting in a very competitive detector for gamma rays when compared with ionization chambers and proportional ionization counters, especially in more extreme environments.

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Section: Detector Gainmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Dual-Stage Gas Proportional Scintillation Counter — Concept and Experimental Results

Cortez

Conde

Carmo

et al. 2019

Proceedings of the Second International Symposium on Radiation Detectors and Their Uses (ISRD2018)

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show abstract

“…The absorption of hard X-rays or gamma-rays in the high pressure detector (5-20 atm of Xe) produces a primary electron cloud in an absorption region, where the electric field is below the threshold for secondary scintillation [3] [8]. The number of primary electrons n, can be estimated using the following expression, n = E r w , where w (w-value) is the energy necessary to produce an electron-ion pair in the gaseous detector medium, 21.6 eV for Xe [11].…”

Section: Hpxe-gpsc System and Working Principlementioning

confidence: 99%

“…Typical configurations include planar [7] [8] [9] or cylindrical [10] geometries. As for the readout system, they typically use photomultipliers [9] [10], although avalanche photodiodes [7] or deposited photocathodes [8] have also been refered. As a result of these characteristics this kind of detectors have lead to energy resolutions below 2% at 662 keV energy [9].…”

Section: Introductionmentioning

confidence: 99%

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New Developments in Gas Detectors — The Multi-Grid High-Pressure Gas Proportional Scintillation Counter

Cortez¹,

Saito²,

Conde³

et al. 2016

Proceedings of International Symposium on Radiation Detectors and Their Uses (ISRD2016)

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In this work a new prototype of a HPXe detector for charged particles, hard X-rays and gammarays is presented. This new detector consists of a high-pressure xenon based proportional scintillation counter (MGHP-GPSC) with a cylindrical geometry. The detection of ionizing radiation in the MGHP-GPSC relies on secondary scintillation as the amplification stage followed by the production of photoelectrons in a photosensitive material. This new HPXe-GPSC detector presents some promising characteristics: expected good energy resolution, since the statistical fluctuations of the photons production process in the gas are small, together with an attenuation of microphonic effects due to a gain of about 15. Since there is no charge multiplication it will also have negligible space charge effects. It is expected to be a ruggedized detector since it does not make use of photomultiplier tubes or other delicate photosensors.

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X-ray luminescence and characteristics of potassium-doped cesium iodide film

Wu,

Shen,

Syu

et al. 2024

Optical Materials

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A New Technique for Gaseous Radiation Detectors: The Multigrid High-Pressure Xenon Gas Proportional Scintillation Counter

Cited by 5 publications

References 11 publications

Dual-Stage Gas Proportional Scintillation Counter — Concept and Experimental Results

Dual-Stage Gas Proportional Scintillation Counter — Concept and Experimental Results

New Developments in Gas Detectors — The Multi-Grid High-Pressure Gas Proportional Scintillation Counter

X-ray luminescence and characteristics of potassium-doped cesium iodide film

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