Saturday 08 March 2025
A new device is capable of simultaneously imaging both gamma rays and neutrons, a breakthrough that could revolutionize our ability to detect and track radioactive materials.
The dual-imaging system, known as GN- Vision, uses a unique combination of technologies to capture images of both types of radiation. The device consists of two planes of position-sensitive detectors, one designed to detect gamma rays and the other to detect neutrons.
To achieve this feat, researchers employed a clever trick: they used a coded-aperture mask to filter out unwanted radiation, allowing them to focus on specific energies and types of particles. This technique, known as Compton imaging, is typically used in medical applications such as positron emission tomography (PET) scans.
The gamma-ray detector uses a large crystal scintillator, surrounded by an array of silicon photomultipliers (SiPMs). These sensors convert the light produced by interactions with gamma rays into electrical signals, which are then processed to create detailed images of the radiation source.
The neutron detector, on the other hand, employs a smaller crystal scintillator made of lithium-6 (Li-6), which is highly sensitive to neutrons. The Li-6 crystals are arranged in a matrix and read out by an array of SiPMs. This configuration allows researchers to detect even very weak neutron signals.
By combining these two detectors, GN-Vision can produce high-resolution images of both gamma-ray and neutron sources. This capability has significant implications for various applications, including nuclear security, medicine, and scientific research.
For instance, the device could be used to monitor the spread of radioactive materials in real-time, allowing authorities to quickly respond to potential threats. In medical settings, GN-Vision could help doctors diagnose and treat cancer more effectively by imaging tumors and monitoring radiation doses.
Researchers are already exploring ways to improve the system’s performance and expand its capabilities. For example, they’re developing machine-learning algorithms to enhance image resolution and reduce background noise. They’re also investigating new materials and detector designs to make the device even more sensitive and efficient.
The potential benefits of GN-Vision are vast, and researchers believe it could become an essential tool for a range of applications in the near future.
Cite this article: “Simultaneous Gamma-Ray and Neutron Imaging: A Breakthrough for Radioactive Material Detection”, The Science Archive, 2025.
Gamma Rays, Neutrons, Imaging, Radiation Detection, Nuclear Security, Medical Imaging, Positron Emission Tomography, Compton Imaging, Scintillators, Silicon Photomultipliers
