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

  • 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.

Published
2020-09-12
How to Cite
[1]
A. M. Benuyo, G. E. Lopez, C. A. Dingle, and S. 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://paperview.spp-online.org/proceedings/article/view/SPP-2020-3D-05.
Section
3D Instrumentation, Imaging, and Signal Processing (Short Presentations)