A Feasibility Study on Nano-Particle Properties for Signal Generation at NaI(Tl) Scintillation Detectors
Purpose: Scintillators have become a prevalent method for detecting ionizing radiation due to their ability to produce optical photons that serve as the basis for the final signal representing the physical properties of the incident beam. This signal is generated using interface hardware such as ph...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Tehran University of Medical Sciences
2025-01-01
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| Series: | Frontiers in Biomedical Technologies |
| Subjects: | |
| Online Access: | https://fbt.tums.ac.ir/index.php/fbt/article/view/684 |
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| Summary: | Purpose: Scintillators have become a prevalent method for detecting ionizing radiation due to their ability to produce optical photons that serve as the basis for the final signal representing the physical properties of the incident beam. This signal is generated using interface hardware such as photon multipliers or photodiodes, in conjunction with the scintillator body. A feasibility study was undertaken to investigate a new interface and detector body based on nano-technology and nano-particle materials, which could potentially eliminate the need for the current photon multipliers.
Materials and Methods: The study involved simulating various incidence beams to determine the wavelengths and intensities of light photons emitted from a NaI(Tl) scintillation detector. The absorption and scatter phenomena of light photons were then modeled using a discrete dipole approximation code, with silver being proposed as the nano-particle material. The silver nano-sphere was implemented as a cubic array with numerous point dipoles distributed on a cubic lattice. An experimental verification was also performed, using Silver Nanoparticle material in powder form, irradiated by 420 nm visible photons.
Results: Based on the numerical results, it is feasible to use nano-material properties as a replacement for current light multipliers. The experimental results confirmed variations in the frequency of the function generator, which was chosen as a typical signal.
Conclusion: However, concerns may arise regarding the implementation of the necessary hardware to retrieve the produced signal as output from the nano-material component, to represent ionizing beam characteristics.
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| ISSN: | 2345-5837 |