Fabrication and characterization of Freon-22 and κ-Carrageenan gel based superheated drop neutron detector

Authors

Alexis Mikhael M. Benuyo ⋅ PH Department of Physical Sciences and Mathematics, University of the Philippines Manila
Girlie Eunice P. Lopez ⋅ PH Philippine Nuclear Research Institute, Department of Science and Technology
Cheri Anne M. Dingle ⋅ PH Philippine Nuclear Research Institute, Department of Science and Technology
Sarah C. Johnson ⋅ PH Department of Physical Sciences and Mathematics, University of the Philippines Manila

Abstract

Superheated drop detectors are commonly used as a device for neutron dosimetry and radiation safety. They can detect neutrons radiation exposure by the formation of vapor bubbles as a result of the interactions between incident neutrons and the superheated liquid droplets suspended in a gel matrix. Fabrication of Superheated Drop Detectors was done by using Freon-22 as the superheated liquid and kappa-carrageenan as the gel matrix. The detectors were subjected to bubble counting, reproducibility, sensitivity, and dose response tests. The bubble counts nucleated in the detectors were found to have a linear relationship with the calculated dose received.. The 3% and 4% detectors were also found to be sensitive to slow neutrons with detectors providing bubble counts even at a few μSv.

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Issue

2020: Proceedings of the 38th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2020-3D-05

Section

Instrumentation, Imaging, and Signal Processing (Short Presentations)

Published

2020-10-19

How to Cite

[1]

AMM Benuyo, GEP Lopez, CAM Dingle, and SC Johnson, Fabrication and characterization of Freon-22 and κ-Carrageenan gel based superheated drop neutron detector, Proceedings of the Samahang Pisika ng Pilipinas 38, SPP-2020-3D-05 (2020). URL: https://proceedings.spp-online.org/article/view/SPP-2020-3D-05.