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Flat Ge-doped optical fibres for food irradiation dosimetry


Mohd Noor, Noramaliza and Jusoh, Mohamad Ashry and Abdull Razis, Ahmad Faizal and Ariffin, Alawiah and Bradley, David Andrew (2014) Flat Ge-doped optical fibres for food irradiation dosimetry. In: National Physics Conference 2014 (PERFIK 2014), 18-19 Nov. 2014, Kuala Lumpur, Malaysia. (pp. 1-6).


Exposing food to radiation can improve hygiene quality, germination control, retard sprouting, and enhance physical attributes of the food product. To provide for food safety, radiation dosimetry in irradiated food is required. Herein, fabricated germanium doped (Ge-doped) optical fibres have been used. The fibres have been irradiated using a gamma source irradiator, doses in the range 1 kGy to 10 kGy being delivered. Using Ge-doped optical fibres of variable size, type and dopant concentration, study has been made of linearity, reproducibility, and fading. The thermoluminescence (TL) yield of the fibres were obtained and compared. The fibres exhibit a linear dose response over the investigated range of doses, with mean reproducibility to within 2.69 % to 8.77 %, exceeding the dose range of all commercial dosimeters used in evaluating high doses for the food irradiation industry. TL fading of the Ge-doped flat fibres has been found to be < 13%.

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Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Food Science and Technology
Faculty of Medicine and Health Science
Institute of Bioscience
DOI Number: https://doi.org/10.1063/1.4915214
Publisher: AIP Publishing LLC
Keywords: Dosimetry; Food irradiation; Ge-doped optical fibres; High dose
Depositing User: Nabilah Mustapa
Date Deposited: 26 Sep 2017 04:06
Last Modified: 26 Sep 2017 04:06
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1063/1.4915214
URI: http://psasir.upm.edu.my/id/eprint/57344
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