Advancements in Radiation Detection: Helium-4 Scintillation Detectors

A recent paper titled "Neutron and γ-ray Discrimination by a Pressurized Helium-4 Based Scintillation Detector" by Shubham Dutta, Sayan Ghosh, and Satyajit Saha presents significant advancements in radiation detection technology. The study focuses on a Pressurized Helium-4 (PHe) based fast neutron scintillation detector, which offers a promising alternative to traditional organic liquid-based scintillators. One of the key findings is that the PHe detector exhibits a lower response to γ-rays compared to organic scintillators, making it more effective in environments where both neutrons and γ-rays are present.

The researchers employed a fast-slow charge integration method to successfully discriminate between neutrons and γ-rays. This capability is crucial for applications in mixed radiation fields, such as those found in nuclear facilities or astrophysical observations. Additionally, the study includes systematic investigations of how high-density polyethylene (HDPE) attenuates fast neutrons and γ-rays, providing valuable insights into the interactions of these particles with the detector.

Simulation analyses conducted using GEANT4 further enhance the understanding of radiation interactions with the PHe detector. These findings could lead to improved safety and efficiency in radiation monitoring and detection systems, particularly in fields such as nuclear physics and astrophysics. The paper can be cited as follows: Dutta, S., Ghosh, S., & Saha, S. (2024). Neutron and γ-ray Discrimination by a Pressurized Helium-4 Based Scintillation Detector. arXiv:2405.09704.