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

Authors

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