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Title: Flat Ge-doped optical fibres for food irradiation dosimetry

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%.
Authors:
;  [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [3]
  1. Department of Imaging, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor (Malaysia)
  2. Food Safety Research Centre, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor (Malaysia)
  3. (Malaysia)
  4. Faculty of Engineering and Technology, Multimedia University, 75450 Malacca (Malaysia)
  5. Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH (United Kingdom)
Publication Date:
OSTI Identifier:
22391540
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1657; Journal Issue: 1; Conference: PERFIK 2014: National Physics Conference 2014, Kuala Lumpur (Malaysia), 18-19 Nov 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; CONCENTRATION RATIO; DOPED MATERIALS; DOSEMETERS; DOSIMETRY; FOOD PROCESSING; GAMMA RADIATION; GAMMA SOURCES; GERMANIUM; GERMINATION; IRRADIATION; OPTICAL FIBERS; RADIATION DOSES; RADIATION EFFECTS; THERMOLUMINESCENCE; YIELDS