Recent Innovations in Sensors for Radiation Detection
A special issue of Sensors (ISSN 1424-8220).
Deadline for manuscript submissions: 31 January 2025 | Viewed by 747
Special Issue Editors
Interests: sensors for radiation detection
Special Issue Information
Dear Colleagues,
X-ray detection technology has played a pivotal role in various fields, including medicine, industry, and research. X-rays are a form of electromagnetic radiation with wavelengths shorter than those of ultraviolet rays, making them capable of penetrating most substances. X-ray detector sensors are crucial components in capturing and converting these rays into useful information.
X-ray detector sensors operate on the principle of ionization, wherein incoming X-rays interact with matter, leading to the generation of electron–hole pairs. Various detector technologies exploit this phenomenon to capture and convert X-rays into measurable signals. Common types of X-ray detectors include scintillation detectors, gas detectors, solid-state detectors, and image receptors such as X-ray films and digital detectors.
- Scintillation detectors are widely used in medical imaging and industrial applications. These detectors consist of a scintillator material that emits light when exposed to X-rays. The emitted light is then detected by a photodetector, converting it into an electrical signal. Sodium iodide and cesium iodide are common scintillator materials.
- Gas detectors, such as proportional counters and Geiger–Muller counters, operate by ionizing gas molecules in the detector chamber. When X-rays interact with the gas, ion pairs are created, leading to an electrical signal that is proportional to the number of X-ray photons. Gas detectors are versatile and find applications in both medical and industrial X-ray imaging.
- Solid-state detectors use semiconductor materials like silicon or germanium to directly convert X-rays into electrical signals. These detectors offer high spatial resolution and efficiency, making them suitable for applications requiring fine details, such as medical radiography and crystallography.
The energy range of scientific interest spans roughly from ~100 eV to ~100 keV. This range is logarithmically divided into soft, tender, hard, and very hard X-rays. “Soft” X-rays are <2 keV, “tender” X-rays 2 keV to ~5 keV, “hard” X-rays are 10 ± few keV, and very hard X-rays are >25 keV. Each type of X-ray regime—soft, tender, hard, and very hard—presents unique challenges and considerations for detector sensors.
This Special Issue invites contributions which focus on, but are not limited to, the following topics:
- Compound semiconductor detector for hard X-rays;
- Solution-processed perovskites for X-ray detection;
- Fast timing detectors;
- High-Z materials for hard X-ray detection;
- Novel detectors for synchrotron application;
- Low-gain avalanche photo-diodes for 4D tracking;
- Novel sensors for soft X-rays;
- Fast imaging detectors;
- High-spatial resolution for X-ray imaging;
- High-energy resolution detectors.
Dr. Abdul Rumaiz
Dr. Pinaroli Giovanni
Guest Editors
Manuscript Submission Information
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Keywords
- X-ray imaging
- X-ray detection
- X-ray detectors
- scintillation detectors
- gas detectors
- solid-state detectors
- image receptors
- X-ray films
- digital detectors
