Related Experiment Video
Updated: Jul 18, 2026

A Basic Positron Emission Tomography System Constructed to Locate a Radioactive Source in a Bi-dimensional Space
Published on: February 1, 2016
PRELIMINARY EVALUATION OF A HAND-MADE RADIATION MONITOR'S POTENTIAL FOR PROVIDING ENERGY INFORMATION AS AN ADDITIONAL
E W Katengeza1, S Ozaki2, T Kato2
1Department of Environment Systems, Graduate School of Frontier Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan.
A low-cost, handmade Geiger-Muller (GM) counter was built and validated. This simple radiation detector successfully demonstrated fundamental physics principles and explored energy measurement capabilities.
Area of Science:
- Nuclear Instrumentation
- Radiation Detection Physics
Background:
- Geiger-Muller (GM) counters are essential tools for radiation detection.
- Developing low-cost, accessible detectors is crucial for widespread educational and research applications.
Purpose of the Study:
- To construct a functional air-filled GM counter using readily available materials.
- To validate the detector's performance by demonstrating key radiation physics principles.
- To investigate the potential of the GM counter design for basic energy spectroscopy.
Main Methods:
- Fabrication of a hand-made air GM counter.
- Experimental verification of the inverse square law and material shielding effects.
- Measurement of the half-life of thoron gas (Radon-220).
- Simulation of alpha-particle energy deposition using the Particle and Heavy Ion Transport code System (PHITS).
Main Results:
- The developed GM counter effectively demonstrated the inverse square law and shielding principles.
- The half-life of thoron gas was accurately determined.
- Preliminary simulations and experiments suggest the detector's potential as a simple proportional counter for low-energy information.
Conclusions:
- A cost-effective, handmade GM counter can be successfully built and utilized for educational demonstrations and basic research.
- The design shows promise for extending functionality to rudimentary energy measurements.
- Further development could enhance its capabilities for more advanced radiation analysis.
More Related Videos
06:28Visualization of Low-Level Gamma Radiation Sources Using a Low-Cost, High-Sensitivity, Omnidirectional Compton Camera
Published on: January 30, 2020
06:20Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
Published on: March 11, 2021
Related Concept Videos
Biological Effects of Radiation
Radiation: Applications
The average...
Positron Emission Tomography
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Absorption of Radiation
Radiation Pressure: Problem Solving
The average value of the rate of momentum transfer divided by the absorbing area represents the average force per...
Atomic Emission Spectroscopy: Overview