A self-powered thin-film radiation detector using intrinsic high-energy current

Area of Science:

• Materials Science
• Physics
• Electrical Engineering

Background:

• Current radiation detectors often require external power and amplification.
• Thin-film multilayer devices offer potential for novel detector designs.

Purpose of the Study:

• To introduce and computationally analyze a radiation detection method based on high-energy current (HEC).
• To demonstrate the feasibility of HEC detectors for direct energy conversion without external bias or amplification.

Main Methods:

• Theoretical and computational analysis of thin-film multilayer detectors.
• Radiation transport computations to determine energy deposition and HEC.
• Examination of copper/aluminum and gold/aluminum layered structures exposed to X-ray beams.

Main Results:

• A measurable signal was achieved in dual-layer configurations.
• Signal strength increased with decreasing thickness of high-Z conductive layers in multilayer structures.
• Computational findings are presented, with experimental results in a companion paper.

Conclusions:

• HEC detectors offer significant advantages: no external power or amplification needed.
• Devices can be manufactured in various sizes, geometries, and flexible forms.
• Potential applications include medical dosimetry, radiation protection, and other fields requiring sensitive, low-cost detectors.