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ThinkMind // ALLSENSORS 2018, The Third International Conference on Advances in Sensors, Actuators, Metering and Sensing // View article allsensors_2018_8_10_78009


Sensor-Based on PbZrO3/PbTiO3 with La2O3 for Measuring the Absorbed Dose in Disinfection of Food Products by Electron Beam in the Agricultural Industry

Authors:
Paulo Cruvinel

Keywords: sensor in agriculture; pyroelectric sensor; thermal detector; radiation in food; radiation measurements; pulsed electron deposition

Abstract:
This paper presents a thermal detector using an inorganic crystal based on a chemical compound prepared with PbZrO3/PbTiO3 with 1% of La2O3. It has been designed for measuring the absorbed dose due the use of an electron beam applied for the disinfection of food products. The measuring arrangements for validation of the sensor were all carried out based on the use of incident doses up to 10 kGy, i.e., using several exposure times from a linear electron accelerator source with selective voltage in the range of 200 kV to 10,000 kV. For a given energy, the detector has a linear response with beam intensity and an inverse response with chopping frequency. A calibration curve which reports the relation of the absorbed dose (kGy) versus the sensor´s amplified output voltage is also presented. The detector may be used over a wide range of energies either inside or outside vacuum, and it does not require an external bias field. Results have shown the usefulness of such agricultural sensor in applications related to food safety.

Pages: 83 to 88

Copyright: Copyright (c) IARIA, 2018

Publication date: March 25, 2018

Published in: conference

ISSN: 2519-836X

ISBN: 978-1-61208-621-7

Location: Rome, Italy

Dates: from March 25, 2018 to March 29, 2018

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