A high pressure xenon self-triggered scintillation drift chamber with 3D sensitivity in the range of 20–140 keV deposited energy

Bolozdynya, A.; Egorov, V.; Koutchenkov, A.; Safronov, G.A.; Smirnov, G. N.; Medved, S.; Morgunov, V.

doi:10.1016/s0168-9002(96)01035-2

Cited by 64 publications

(20 citation statements)

References 13 publications

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“…Concerning the electroluminescence yield, defined as the number of secondary scintillation photons produced per drifting electron per unit path length, the data available in the literature are not in agreement. While the data obtained at room temperature using Monte Carlo simulation [7] and Boltzmann calculations [11] are in perfect agreement with each other [7], the values obtained experimentally [12][13][14][15][16][17] are much lower than the former and differ significantly from each other, see Fig.3 further on. On the other hand, the results presented for saturated gas at cryogenic temperatures [16,17], in equilibrium with the liquid phase, are in agreement with each other, as well as with the simulation results calculated for room temperature.…”

Section: Introductionsupporting

confidence: 65%

“…Table I summarizes the different values found in the literature for the scintillation amplification parameter, and the respective experimental conditions concerning pressure and temperature. The value of 70 photons/kV, obtained by Parsons et al (1989) [13] and confirmed by Bolozdynya et al (1997) [14] and Akimov et al (1997) [15] is a factor of two lower than that obtained by Monte Carlo simulation and Boltzmann calculation. In 2003, Aprile et al [16] have estimated a value of 120 photons/kV from their experimental measurements in saturated xenon vapour, a value in much better agreement with the simulation/calculation.…”

Section: Resultsmentioning

confidence: 70%

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Secondary scintillation yield in pure xenon

et al. 2007

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The xenon secondary scintillation yield was studied as a function of the electric field in the scintillation region, in a gas proportional scintillation counter operated at room temperature. A large area avalanche photodiode was used for the readout of the VUV secondary scintillation produced in the gas, together with the 5.9 keV x-rays directly absorbed in the photodiode. The latter was used as a reference for the determination of the number of charge carriers produced by the scintillation pulse and, thus, the number of VUV photons impinging the photodiode. A value of 140 photons/kV was obtained for the scintillation amplification parameter. The attained results are in good agreement with those predicted, for room temperature, by Monte Carlo simulation and Boltzmann calculations, as well as with those obtained for saturated xenon vapour, at cryogenic temperatures, and are about a factor of two higher than former results measured at room temperature.

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Section: Introductionsupporting

confidence: 65%

Section: Resultsmentioning

confidence: 70%

Secondary scintillation yield in pure xenon

et al. 2007

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“…(1) The improvement of performance of the conventional large area (typically 40 Â 50 cm 2 ) gamma cameras, by optimizing the light collection and using recently developed position-sensitive photomultipliers or by using a completely different detection technique such as liquid and gas xenon detectors (Egorov et al, 1983;Nguen Ngoc et al, 1980;Bolozdynya et al, 1997).…”

Section: Gamma Cameramentioning

confidence: 99%

Detectors for medical radioisotope imaging: demands and perspectives

Lopes

Chepel

2004

Radiation Physics and Chemistry

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Radioisotope imaging is used to obtain information on biochemical processes in living organisms, being a tool of increasing importance for medical diagnosis. The improvement and expansion of these techniques depend on the progress attained in several areas, such as radionuclide production, radiopharmaceuticals, radiation detectors and image reconstruction algorithms. This review paper will be concerned only with the detector technology.We will review in general terms the present status of medical radioisotope imaging instrumentation with the emphasis put on the developments of high-resolution gamma cameras and PET detector systems for scinti-mammography and animal imaging. The present trend to combine two or more modalities in a single machine in order to obtain complementary information will also be considered. r

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“…Another method to acquire information from high-pressure noble gas ionization chambers is to detect excitation light generated by ionization electrons drifting along the electric field through the gas (see, for example, [4] and references therein). In the presence of high enough electric field, ionization electrons can gain sufficient energy between successive collisions to cause excitation of atoms or secondary ionization.…”

Section: Introductionmentioning

confidence: 99%

Vibration-proof high-pressure xenon electroluminescence detector

Bolozdynya

DeVito

2004

IEEE Trans. Nucl. Sci.

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We have developed a high-pressure [electroluminescence (EL)] detector with a sensitive volume of 5 cm 5 cm defined by a cathode, five drift rings, and an EL-generating structure. The EL-generating structure consists of two parallel-plate chemically etched grids and a high-pressure optical window, which is optically coupled to an external photomultiplier tube. Ionizing radiation that is absorbed in the sensitive volume generates electrons, which drift into the EL region and produce an EL flash. The detector was filled with 20-bar Xe gas that was highly purified ( 1 ms electron-life time) using a spark purification technique. To evaluate the potential for using an EL detector under adverse conditions, we disturbed the detector using a 10-W electric engraver working at 60 Hz. The action of the engraver had practically no effect on spectra acquired from an 241 Am gamma ray source.

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A high pressure xenon self-triggered scintillation drift chamber with 3D sensitivity in the range of 20–140 keV deposited energy

Cited by 64 publications

References 13 publications

Secondary scintillation yield in pure xenon

Secondary scintillation yield in pure xenon

Detectors for medical radioisotope imaging: demands and perspectives

Vibration-proof high-pressure xenon electroluminescence detector

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