UV-VIS spectral evaluation of CR-39 detector exposed with diagnostic dosage

The effects of the X-ray irradiation and chemical etching on the physical and optical properties of CR-39 plastic detectors were investigated for different doses of X-ray. CR-39 detectors were etched in the solution of the 3 M of NaOH after irradiation for revelations of the track. The tracks formed...

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Main Authors:	Nur Sha'dah, Z., Iskandar, S.M., Azhar, A.R., Suhaimi, M.J., Nur Lina, R., Halimah, M.K.
Format:	Article
Language:	English
Published:	Universiti Kebangsaan Malaysia 2014
Online Access:	http://journalarticle.ukm.my/7188/ http://journalarticle.ukm.my/7188/ http://journalarticle.ukm.my/7188/1/21_Nur_Sha%C3%94%C3%87%C3%96dah.pdf

id	ukm-7188
recordtype	eprints
spelling	ukm-71882016-12-14T06:43:20Z http://journalarticle.ukm.my/7188/ UV-VIS spectral evaluation of CR-39 detector exposed with diagnostic dosage Nur Sha'dah, Z. Iskandar, S.M. Azhar, A.R. Suhaimi, M.J. Nur Lina, R. Halimah, M.K. The effects of the X-ray irradiation and chemical etching on the physical and optical properties of CR-39 plastic detectors were investigated for different doses of X-ray. CR-39 detectors were etched in the solution of the 3 M of NaOH after irradiation for revelations of the track. The tracks formed on CR-39 either by irradiated X-ray or due to the effect of environment. The changes in the thickness after exposed have significant decrease in 60 kVp and started to increase in the range of 70 kVp up to 100 kVp due to the formation of oxidation layer on surface by free radicals. The optical band gaps before etching and after etching were determined by using Ultraviolet-visible (UV-Vis) spectroscopy. The optical band gap is attributed to the indirect transition due to its amorphous nature which is significantly decline trend energy in increase of the energy fluence of radiation. The Urbach’s energy, is defined as the width of the tail localized states in the forbidden band gap which change increment trend as increase in dose delivered due to the distortion structure of the CR-39 in terms of the electron charges in valences electron hence attributes to the induced modification of angle bond between the neighboring atoms. Universiti Kebangsaan Malaysia 2014-06 Article PeerReviewed application/pdf en http://journalarticle.ukm.my/7188/1/21_Nur_Sha%C3%94%C3%87%C3%96dah.pdf Nur Sha'dah, Z. and Iskandar, S.M. and Azhar, A.R. and Suhaimi, M.J. and Nur Lina, R. and Halimah, M.K. (2014) UV-VIS spectral evaluation of CR-39 detector exposed with diagnostic dosage. Sains Malaysiana, 43 (6). pp. 953-958. ISSN 0126-6039 http://www.ukm.my/jsm/
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Kebangasaan Malaysia
building	UKM Institutional Repository
collection	Online Access
language	English
description	The effects of the X-ray irradiation and chemical etching on the physical and optical properties of CR-39 plastic detectors were investigated for different doses of X-ray. CR-39 detectors were etched in the solution of the 3 M of NaOH after irradiation for revelations of the track. The tracks formed on CR-39 either by irradiated X-ray or due to the effect of environment. The changes in the thickness after exposed have significant decrease in 60 kVp and started to increase in the range of 70 kVp up to 100 kVp due to the formation of oxidation layer on surface by free radicals. The optical band gaps before etching and after etching were determined by using Ultraviolet-visible (UV-Vis) spectroscopy. The optical band gap is attributed to the indirect transition due to its amorphous nature which is significantly decline trend energy in increase of the energy fluence of radiation. The Urbach’s energy, is defined as the width of the tail localized states in the forbidden band gap which change increment trend as increase in dose delivered due to the distortion structure of the CR-39 in terms of the electron charges in valences electron hence attributes to the induced modification of angle bond between the neighboring atoms.
format	Article
author	Nur Sha'dah, Z. Iskandar, S.M. Azhar, A.R. Suhaimi, M.J. Nur Lina, R. Halimah, M.K.
spellingShingle	Nur Sha'dah, Z. Iskandar, S.M. Azhar, A.R. Suhaimi, M.J. Nur Lina, R. Halimah, M.K. UV-VIS spectral evaluation of CR-39 detector exposed with diagnostic dosage
author_facet	Nur Sha'dah, Z. Iskandar, S.M. Azhar, A.R. Suhaimi, M.J. Nur Lina, R. Halimah, M.K.
author_sort	Nur Sha'dah, Z.
title	UV-VIS spectral evaluation of CR-39 detector exposed with diagnostic dosage
title_short	UV-VIS spectral evaluation of CR-39 detector exposed with diagnostic dosage
title_full	UV-VIS spectral evaluation of CR-39 detector exposed with diagnostic dosage
title_fullStr	UV-VIS spectral evaluation of CR-39 detector exposed with diagnostic dosage
title_full_unstemmed	UV-VIS spectral evaluation of CR-39 detector exposed with diagnostic dosage
title_sort	uv-vis spectral evaluation of cr-39 detector exposed with diagnostic dosage
publisher	Universiti Kebangsaan Malaysia
publishDate	2014
url	http://journalarticle.ukm.my/7188/ http://journalarticle.ukm.my/7188/ http://journalarticle.ukm.my/7188/1/21_Nur_Sha%C3%94%C3%87%C3%96dah.pdf
first_indexed	2023-09-18T19:49:01Z
last_indexed	2023-09-18T19:49:01Z
_version_	1777406093868138496

UV-VIS spectral evaluation of CR-39 detector exposed with diagnostic dosage

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