Abstract
Recent Advances in Potential Nanoparticles and Nanotechnology for Sensing Food-Borne Pathogens and Their Toxins in Foods and Crops: Current Technologies and Limitations
Highlights
Scintillators are a type of phosphor that immediately converts ionizing radiation into lowenergy photons in UV-NIR regions.[1,2,3] Scintillation detectors are mainly composed of scintillators and photodetectors,(4) and ionizing radiation can be detected as electric signals since scintillation photons are converted into electrons through photodetectors
In positron emission tomography (PET), scintillation detectors arranged in a circle around a human body simultaneously detect two γ-rays (511 keV) emitted in opposite directions
The peaks corresponded to (0 0 2l) planes (l = 1, 2, 3, 4, 5, 6), and the present result indicated that this sample has the 2D quantum well structures.[23]. The lattice constant of the c-axis was estimated to be ~16.3 Å, which was almost the same as that
Summary
Scintillators are a type of phosphor that immediately converts ionizing radiation into lowenergy photons in UV-NIR regions.[1,2,3] Scintillation detectors are mainly composed of scintillators and photodetectors,(4) and ionizing radiation can be detected as electric signals since scintillation photons are converted into electrons through photodetectors. For X- and γ-ray detector uses, the following properties are generally required: high light yields (LY), large effective atomic number (Zeff), high density, short scintillation decay time, low afterglow, and low fabrication costs.[5,6] Applications of scintillators cover wide fields such as medical imaging,(7) space explorations,(8) well logging,(9) and inspection equipment for security.[10] The required properties are varied. Positron emission tomography (PET) is a type of medical diagnosis imaging technique, especially for cancer diagnosis. In PET, scintillation detectors arranged in a circle around a human body simultaneously detect two γ-rays (511 keV) emitted in opposite directions. Owing to the characteristics of the measurements, sufficient energy resolution to distinguish 511 keV γ-rays from scattered signals, high detection efficiency, and high time resolution are important. Inorganic scintillators having large Zeff and ISSN 0914-4935 © MYU K.K. https://myukk.org/
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