Researchers have demonstrated that megaelectronvolt MeV electrons induce a strong, ultrafast nonlinear optical response in semiconductors on timescales below 10 picoseconds. This effect is driven by highly localized charge carriers generated during inelastic collisions along ionization trajectories rather than through homogeneous volume deposition. In materials like CdSe, the interaction causes a bandgap shift via band filling, while ZnTe exhibits bandgap renormalization. These findings enable high-precision spatiotemporal detection of ionizing radiation at room temperature, which could enhance medical imaging and plasma monitoring technologies.
* Discovery of sub-10 ps optical modulation from MeV electrons
* Identification of localized charge carrier generation as the driving mechanism
* Observation of band filling and bandgap renormalization in different semiconductors
* Potential for high-precision radiation detection applications
* Discovery of sub-10 ps optical modulation from MeV electrons
* Identification of localized charge carrier generation as the driving mechanism
* Observation of band filling and bandgap renormalization in different semiconductors
* Potential for high-precision radiation detection applications
This article explores gamma spectroscopy using a Radiacode 103G detector and Python, detailing data collection, analysis, and experiments with various objects to identify radioactive elements.
