Fabrication, testing and simulation of a high spatial resolution alpha-particle imager based on ZnO nanowires in a polycarbonate nanoporous membrane

Taheri, Ali; Saramad, S.; Ghalenoi, Samira; Setayeshi, Saeed

doi:10.1140/epjc/s10052-013-2649-6

Cited by 8 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Employing suitable optical models, Geant4: a Monte Carlo toolkit, can be a perfect option to model all aspects of scintillation detectors including transport of the optical photons inside the materials and at the different kinds of the boundaries, and complex geometries [12][13][14][15][16].…”

Section: Geant4 Simulationmentioning

confidence: 99%

Lead foil wrapping of the plastic scintillators for the gamma ray detection: optical reflector or spectrum intensifier?

2017

View full text Add to dashboard Cite

This paper studies the effect of lead wrapping on the response of the plastic scintillators as gamma detectors. Experimental tests and Geant4 simulations showed that lead wrapping cannot increase the gamma absorption efficiency of the detector but, as a reflector, it can improve the optical properties of the detector. The reflectivity of the lead foil as an optical reflector was determined equal to 66% using an experimental-simulation combined method. Based on the obtained results, the optical collection efficiency of the detector was also increased about 4% after employing the lead reflector.

show abstract

Section: Geant4 Simulationmentioning

confidence: 99%

Lead foil wrapping of the plastic scintillators for the gamma ray detection: optical reflector or spectrum intensifier?

2017

View full text Add to dashboard Cite

show abstract

“…Recently, a new architecture based on scintillating zinc oxide (ZnO) nanowires has been proposed to improve the spatial resolution of such imaging devices [6][7][8][9], and it has been shown that the light-guiding role of scintillating nanostructures inside Anodic Aluminum Oxide (AAO) or polycarbonate membrane reduces the scattering of the X-ray-generated optical photons inside the detector and improves the spatial resolution of the imager.…”

Section: Introductionmentioning

confidence: 99%

Simulation the spatial resolution of an X-ray imager based on zinc oxide nanowires in anodic aluminium oxide membrane by using MCNP and OPTICS Codes

Samarin¹,

Saramad²

2018

J. Inst.

View full text Add to dashboard Cite

“…This problem can be overcome by preparing micro-structured scintillator layers in the form of column shaped crystals [9,10] or by using a novel nanowire ZnO scintillator in AAO membrane. The ZnO microwires in polycarbonate (PC) or anodic aluminum oxide (AAO) membrane have been simulated (with Geant4) and experimentally tested beforehand [11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Characterizing and simulation the scintillation properties of zinc oxide nanowires in AAO membrane for medical imaging applications

2017

View full text Add to dashboard Cite

In this work, a new method is proposed for extracting some X-ray detection properties of ZnO nanowires electrodeposited on Anodized Aluminum Oxide (AAO) nanoporous template. The results show that the detection efficiency for 12µm thickness of zinc oxide nano scintillator at an energy of 9.8 keV, near the K-edge of ZnO (9.65 keV), is 24%. The X-rays that interact with AAO can also generate electrons that reach the nano scintillator. The scintillation events of these electrons are seen as a low energy tail in the spectrum. In addition, it is found that all the X-rays that are absorbed in 300 nm thickness of the gold layer on the top of the zinc oxide nanowires can participate in the scintillation process with an efficiency of 6%. Hence, the scintillation detection efficiency of the whole detector for 9.8 keV X-ray energy is 30%. The simulation results from Geant4 and the experimental detected photons per MeV energy deposition are also used to extract the light yield of the zinc oxide nano scintillator. The results show that the light yield of the zinc oxide nanowires deposited by the electrochemical method is approximately the same as for single crystal zinc oxide scintillator (9000). Much better spatial resolution of this nano scintillator in comparison to the bulk ones is an advantage which candidates this nano scintillator for medical imaging applications. K: Detector design and construction technologies and materials; Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc); Scintillators, scintillation and light emission processes (solid, gas and liquid scintillators) 1Corresponding author.

show abstract

Fabrication, testing and simulation of a high spatial resolution alpha-particle imager based on ZnO nanowires in a polycarbonate nanoporous membrane

Cited by 8 publications

References 24 publications

Lead foil wrapping of the plastic scintillators for the gamma ray detection: optical reflector or spectrum intensifier?

Lead foil wrapping of the plastic scintillators for the gamma ray detection: optical reflector or spectrum intensifier?

Simulation the spatial resolution of an X-ray imager based on zinc oxide nanowires in anodic aluminium oxide membrane by using MCNP and OPTICS Codes

Characterizing and simulation the scintillation properties of zinc oxide nanowires in AAO membrane for medical imaging applications

Contact Info

Product

Resources

About