Applicability of LLD in neutron dosimetry

Area of Science:

• Radiation Detection and Measurement
• Biophysics
• Materials Science

Background:

• Lyoluminescence dosimetry (LLD) is a developing technique for radiation measurement.
• Tissue equivalence is crucial for accurate dosimetry in biological and medical applications.
• Understanding material sensitivity to different radiation types (neutrons, X-rays) is key for dosimetry.

Purpose of the Study:

• To evaluate the applicability of Lyoluminescence dosimetry (LLD) for neutron dosimetry.
• To identify optimal materials for LLD in mixed radiation fields.
• To investigate the differential sensitivity of various materials to neutrons and X-rays.

Main Methods:

• Investigated lyoluminescence variations in sensitivity for five materials: mannitol, xylitol, trehalose, glucose, and leucine.
• Tested response to X-rays and fast neutrons.
• Assessed tissue equivalence as a selection criterion for dosimetric materials.
• Performed phantom and in-vivo measurements to validate the method.

Main Results:

• Demonstrated striking differences in neutron and gamma sensitivities among the tested materials.
• Identified polyalcohols, saccharides, and an amino acid as potential dosimetric materials.
• Showcased the capability for simultaneous determination of neutron and gamma doses.
• Validated the LLD method through phantom and in-vivo experiments.

Conclusions:

• Lyoluminescence dosimetry is applicable for neutron dosimetry.
• Differential sensitivities of materials enable simultaneous neutron and gamma dose assessment.
• The tested materials, particularly polyalcohols and saccharides, show potential for mixed-field dosimetry.