Study on the Characteristics of a Scintillator for Beta-ray Detection using Epoxy Resin

Nam, Jong Soo; Choi, Yong Seok; Hong, Sang Bum; Seo, Bum Kyung; Moon, Jei‐Kwon; Choi, Jong Won

doi:10.1051/epjconf/201715307005

Cited by 6 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Cuando el núcleo inestable del Sr-90 sufre esta desintegración, con una energía de enlace de 8746.766 keV, se emite un electrón en forma de partícula beta con energía de 0.546 MeV, reflejado en la ecuación 14, donde finalmente lleva a un radionucleido de Itrio-90 (Y-90), el cual después realiza su respectivo proceso de desintegración (β − ) llegando al nucleido estable de Circonio 90 (Zr-90) (Nam et al, 2017).…”

Section: Bisturí Bipolarunclassified

Análisis de la incidencia de una fuente radiactiva en un bisturí bipolar para resección de carcinomas en tejido ex vivo

Gavilanez

Castañeda

Logroño

2022

View full text Add to dashboard Cite

Introducción. Presentar la patología de carcinomas en cualquier tipo de tejido es inevitable, según el Informe mundial sobre el cáncer se confirmó que existe desigualdad en el control y la atención del cáncer en todo el mundo. Objetivo. El objetivo de este trabajo fue analizar la incidencia de una fuente radiactiva en un bisturí bipolar para resección de carcinomas en tejido ex vivo usando el simulador COMSOL MULTIPHYSICS (versión 5.4 gratuita). Metodología. El procedimiento fue calentar el bisturí bipolar con un diferencial de potencial obtenido de la fuente radiactiva a los dos electrodos, considerando que se trabajará con Estroncio 90 para la estimación de voltaje, se usó un tubo Geiger para cumplir con la función de enviar una corriente eléctrica hacia el ánodo del tubo, reflejándose como pulsos de bajo voltaje, siendo amplificados mediante un convertidor de voltaje para receptar una tensión de entrada y proporcionar una tensión de salida aumentada, mediante este sistema se obtuvo valores de 50, 55, 60, 65 y 70 Voltios. Finalmente, se realizó una simulación para cada voltaje mediante un proceso termoeléctrico para liberar energía térmica usando el método de elementos finitos. Resultados. Los resultados arrojaron que la distribución de calor generada para cada caso, no mostró una zona de coagulación entre cada electrodo, ya que, el bisturí tuvo un comportamiento monopolar creando una zona de coagulación en los extremos de cada electrodo que crece hasta el medio de cada uno, teniendo un máximo de simetría de 0,9 mm y 1,9 mm de diámetro lateral y de profundidad a los 60 V, provocando coágulos debido a la temperatura expuesta y evitando la visibilidad de los carcinomas superficiales en el tejido ex vivo. Conclusión. Entonces, se concluyó que este procedimiento no es viable para crear una zona de coagulación simétrica entre las puntas de cada electrodo y acrecienta el daño térmico irreversible al tejido posiblemente sano.

show abstract

Section: Bisturí Bipolarunclassified

Análisis de la incidencia de una fuente radiactiva en un bisturí bipolar para resección de carcinomas en tejido ex vivo

Gavilanez

Castañeda

Logroño

2022

View full text Add to dashboard Cite

show abstract

“…In contrast, although catalog data on plastic-scintillation survey meters are available [20,21], no user reports on performance for β-rays have appeared. In addition, although papers on plastic scintillators per se have appeared [22][23][24][25], as well as reports of the use of plastic scintillators in various experimental equipment [26], no paper has yet evaluated the performance of a plastic scintillator incorporated into a commercial survey meter. Therefore, it was important to evaluate the basic performance of this type of survey meter experimentally.…”

Section: Introductionmentioning

confidence: 99%

Basic Performance Evaluation of a Radiation Survey Meter That Uses a Plastic-Scintillation Sensor

Yamamoto,

Shindo,

Ohno

et al. 2024

Sensors

View full text Add to dashboard Cite

After the Fukushima nuclear power plant accident in 2011, many types of survey meters were used, including Geiger–Müller (GM) survey meters, which have long been used to measure β-rays. Recently, however, a novel radiation survey meter that uses a plastic-scintillation sensor has been developed. Although manufacturers’ catalog data are available for these survey meters, there have been no user reports on performance. In addition, the performance of commercial plastic-scintillation survey meters has not been evaluated. In this study, we experimentally compared the performance of a plastic-scintillation survey meter with that of a GM survey meter. The results show that the two instruments performed very similarly in most respects. The GM survey meter exhibited count losses when the radiation count rate was high, whereas the plastic-scintillation survey meter remained accurate under such circumstances, with almost no count loss at high radiation rates. For measurements at background rates (i.e., low counting rates), the counting rates of the plastic-scintillation and GM survey meters were similar. Therefore, an advantage of plastic-scintillation survey meters is that they are less affected by count loss than GM survey meters. We conclude that the plastic-scintillation survey meter is a useful β-ray measuring/monitoring instrument.

show abstract

“…By doing this, we will measure radioactive βsources activity and we will study the feasibility of identifying different elements using their measured spectrum. Other plastic scintillator detectors have also been used for β-sources measurements [8][9][10].This paper is divided as follows: we first describe in Sec. 2 the detector.Then, in Sec.…”

mentioning

confidence: 99%

Using a portable muon detector for radioactive source measurements and identification

Masias

Delgado

Coll.

et al. 2019

Nuclear Instruments and Methods in Physics Research Section A:

View full text Add to dashboard Cite

We have re-purposed portable plastic scintillator muon detectors, designed by the CosmicWatch project, for the measurement of electrons emitted by the decay of radioactive sources. For the latter purpose we have first calibrated the detectors using the local atmospheric muon flux, performing angular distribution and attenuation measurements. In addition, we have simulated the detector using Geant4 in a detailed fashion for a cross-check and better understanding of the device. Then, we have developed a method to evaluate the activity of β-sources and to discriminate different β-sources by looking into their respective voltage spectrum output.interact with nuclei in the atmosphere, producing secondary particles, which then decay into muons [7]. Muons are highly penetrating, a property that allows us to detect them under different conditions (e.g. inside buildings or below ground level).In this paper we will show that this detector, after minor modifications, can be used to count electrons as well. By doing this, we will measure radioactive βsources activity and we will study the feasibility of identifying different elements using their measured spectrum. Other plastic scintillator detectors have also been used for β-sources measurements [8][9][10].This paper is divided as follows: we first describe in Sec. 2 the detector.Then, in Sec. 3 we outline how we performed simulations of the detector under different configurations to cross-check the physics involved. In Sec. 4 we describe the calibration process using atmospheric muon measurements and simulations.Then in Sec. 5 we describe the method and give the results on the measurement of the radioactive β-sources activities and source identification. Desktop Muon DetectorThe Desktop Muon Detector (DMD), designed by the CosmicWatch project from the Massachusetts Institute of Technology, is a scintillation based device [5]. The core of the detector is a plastic scintillator approximately 5 cm × 5 cm × 1 cm polystyrene Dow Styron 663 W doped with 1% PPO + 0.03% POPOP [11]. We have measured its optical properties, as shown in Fig. 1, corroborating that it is blue-emitting (peak emission at ≈420 nm) and has an absorption cut-off at ≈400 nm.When a charged particle passes through the plastic, it leaves a fraction of its energy and the medium emits scintillation light. A SensL C-Series SMT silicon photomultiplier (SiPM) [12] (6.0 × 6.0 mm 2 ), attached to the plastic, detects these scintillation photons, with maximum efficiency at 420 nm. To improve the signal response, we use a 29.4 V bias voltage (24.7 V breakdown voltage and 4.7 V overvoltage), which is delivered by a DC-DC booster converter from a 5 V

show abstract

Study on the Characteristics of a Scintillator for Beta-ray Detection using Epoxy Resin

Cited by 6 publications

References 14 publications

Análisis de la incidencia de una fuente radiactiva en un bisturí bipolar para resección de carcinomas en tejido ex vivo

Análisis de la incidencia de una fuente radiactiva en un bisturí bipolar para resección de carcinomas en tejido ex vivo

Basic Performance Evaluation of a Radiation Survey Meter That Uses a Plastic-Scintillation Sensor

Using a portable muon detector for radioactive source measurements and identification

Contact Info

Product

Resources

About