Development of Wide-energy Range X/γ-ray Survey-meter

Yamamura, Seini; Nakamura, Takashi; Itou, Katsuhito; Hatakeyama, Osamu; Masui, Kaoru

doi:10.1080/00223131.2008.10875818

Cited by 7 publications

(2 citation statements)

References 1 publication

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“…In particular, NaI:Tl (Z eff = 50.8) and CsI:Tl (Z eff = 54.1) crystals can be used as survey meters and X-ray computed tomography (CT) scanners. 7,8) Among recently developed halide crystalline scintillators are SrI 2 :Eu (Z eff = 50.3), 9) Cs 2 LiYCl 6 :Ce (Z eff = 46.4), 10) and CeBr 3 (Z eff = 47.6). 11) Although all these halide crystals have demonstrated high light yield with excellent energy resolution, their Z eff values are less than those of oxide-based commercial scintillators such as Bi 4 Ge 3 O 12 (Z eff = 75.2), 12) Lu 2 SiO 5 :Ce (Z eff = 65.4), 13) and CdWO 4 (Z eff = 64.2).…”

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confidence: 99%

Thallium magnesium chloride: A high light yield, large effective atomic number, intrinsically activated crystalline scintillator for X-ray and gamma-ray detection

Fujimoto

Koshimizu

Yanagida

et al. 2016

Jpn. J. Appl. Phys.

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We report the luminescence and the scintillation properties of a newly developed thallium magnesium chloride (TlMgCl3) crystal. The crystal sample can be easily fabricated from the melt using the Bridgman method. The photoluminescence band appeared near the wavelength of 405 nm under excitation at 230 nm. An X-ray-induced scintillation spectrum showed an intense emission band near the wavelength of 405 nm. The decay time constant was estimated to be approximately 60 ns (∼25%) and 350 ns (∼75%) using a bi-exponential fitting. The scintillation light yield reached 46,000 photons/MeV with an energy resolution of 5% at 662 keV.

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confidence: 99%

Thallium magnesium chloride: A high light yield, large effective atomic number, intrinsically activated crystalline scintillator for X-ray and gamma-ray detection

Fujimoto

Koshimizu

Yanagida

et al. 2016

Jpn. J. Appl. Phys.

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“…In the procedure of testing and measuring X-ray radiation, a survey meter is required to measure the level of radiation 1 exposure and provide data on measurement results in cacah per minute (CPM) or mR/hour [9] [10]. Each nuclear radiation gauge consists of two parts, namely detectors and supporting equipment.…”

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confidence: 99%

Analysis of Tube Leakage of X-Ray Radiation Using Geiger Muller Sensor Equipped with Data Storage

Utomo

Indrato

Ariswati

et al. 2022

Indones.J.electronic.electromed.med.inf

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X-ray radiation (ionization) cannot be felt directly by the five human senses. Therefore, radiation monitoring is needed, one of which by using a survey meter. The purpose of this research is to directly monitor the level of radiation exposure and leakage of X-ray tube containers in the work area. This was done to ensure the safety and health of workers in the radiation transmission area, so that it is in accordance with the ALARA (As Low As Reasonably Achievable) principle, which is stipulated in the Decree of the Minister of Health RI No. 1250/Menkes/SK/XII/2009 concerning Guidelines for Quality Control of Radiodiagnostic Equipment as Standard Values for X-Ray Radiation Monitoring. This research is an experimental study with a survey meter equipment module design using a Geiger Muller sensor equipped with data storage. This module design method uses Arduino programming as data processing and is displayed on the CHARACTER LCD. Test analysis was carried out by comparing the measurement value of the module with the standard value as a standard for comparison. Based on the measurement results, the X-ray tube leak test value resulted in a standard AAT survey meter value of 0.001 both using a closed and unsupplied 2mm Pb circuit, namely 0.00097 mGy/hour and 0.00092 mGy/hour. Meanwhile, the results of the tube leakage test using a survey meter, both circuits, modules, and standard survey meters show a passing grade test value of < 1mGy/hour. In conclusion, the module design using the Geiger Muller sensor is feasible to use.

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Inorganic Halide Scintillators

Fujimoto

2022

Phosphors for Radiation Detectors

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Development of Wide-energy Range X/γ-ray Survey-meter

Cited by 7 publications

References 1 publication

Thallium magnesium chloride: A high light yield, large effective atomic number, intrinsically activated crystalline scintillator for X-ray and gamma-ray detection

Thallium magnesium chloride: A high light yield, large effective atomic number, intrinsically activated crystalline scintillator for X-ray and gamma-ray detection

Analysis of Tube Leakage of X-Ray Radiation Using Geiger Muller Sensor Equipped with Data Storage

Inorganic Halide Scintillators

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