Effect of varying Cs-137 beam on the response of a radiation monitoring instrument (survey meter)

Authors

Christy Mae Tiamsin Betos ⋅ PH Philippine Nuclear Research Institute, Department of Science and Technology
Marianna Lourdes Marie L. Grande ⋅ PH Philippine Nuclear Research Institute, Department of Science and Technology
Ave Ann Nikolle M. Garalde ⋅ PH Philippine Nuclear Research Institute, Department of Science and Technology
Kristine Marie D. Romallosa ⋅ PH Philippine Nuclear Research Institute, Department of Science and Technology

Abstract

The effect of varying Cs-137 beams, by utilizing a lead attenuator and a collimator, on a survey meter’s (SM) response was assessed in this study. The procedures on the calibration method of SM in the Philippine Nuclear Research Institute–Secondary Standards Dosimetry Laboratory (PNRI–SSDL) were presented.
Their resulting measurements in terms of the ambient dose equivalent H*(10) were shown. Results showed that at source-detector distances with lower H*(10), bare Cs-137 beam produced better response for the SM. However, it is important to note that the use of lead attenuator and collimator are still more practical when it comes to procedures in the PNRI-SSDL. This decreases the source-detector distance needed for the calibration. Distance may have also played a role as to why an instrument response is closer to the reference value.

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Issue

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

Shedding light on the pandemic through the lens of physics
Pagtanglaw sa pandemya sa lente ng pisika
19-23 October 2020

This is the first fully online SPP Physics Conference. Please visit the SPP2020 activity webpage for more information on this year's Physics Congress.

Article ID

SPP-2020-3D-08

Section

Instrumentation, Imaging, and Signal Processing (Short Presentations)

Published

2020-10-19

How to Cite

[1]

CMT Betos, MLML Grande, AANM Garalde, and KMD Romallosa, Effect of varying Cs-137 beam on the response of a radiation monitoring instrument (survey meter), Proceedings of the Samahang Pisika ng Pilipinas 38, SPP-2020-3D-08 (2020). URL: https://proceedings.spp-online.org/article/view/SPP-2020-3D-08.