What Are Gamma Ionization Chambers?

Feb 7

Gamma rays interact with the cathode material and the filling gas in gamma detectors to produce electrons.

High-intensity gamma radiations are measured
High dependability and a long service life
Customization based on the user's requirements

Description

The charge carriers are collected by the electrodes after the electrons ionize the gas. A load circuit detects the anode pulse that results. Several interaction modes generate primary electrons:

Pair formation, Photoelectric action, Compton scattering

The efficiency of the mechanism is determined by the gamma quanta energy, cathode material and thickness, and the type and pressure of the filling gas. The sensitivity of a detector is thus highly reliant on its design, although it is always energy-dependent. The maximal sensitivity occurs at around 80 keV due to the photoelectric effect's dominance. For the same mechanical design at high gamma energy (> 500 keV), the sensitivity can drop to one hundredth of the maximum.

Photonis Nuclear Instrumentation can provide unique gamma ionization chambers with the greatest quality and dependability by having complete control over the following operations.

Customization of industrialized gamma ionization chambers to meet customer needs.
Our expert R&D team is developing new gamma ionization chambers.
Collaboration with the French Atomic Energy Commission / CEA over a long period of time (theoretical approach, modeling, and qualification tests in research reactors).
On-site completion of the manufacturing process.
All of the Photonis Group's activities, experience, and knowledge are available to help.
Certifications and Quality Assurance programs that are tailored to the needs of the customer.
Technical assistance and application of knowledge.