Mixed-Radiation-Field Dosimetry Utilizing Nuclear Quadrupole Resonance
Radiation effects on urea, thiourea, guanidine carbonate and guanine sulfate were evaluated for both photon and neutron irradiations. Hydration of these materials typically provides a greatly increased sensitivity to both forms of radiation exposure, although not all materials lend themselves to thi...
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University of Florida. Department of Nuclear Engineering Sciences.
1992
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ftunivnotexas:info:ark/67531/metadc1200458 2023-05-15T15:52:57+02:00 Mixed-Radiation-Field Dosimetry Utilizing Nuclear Quadrupole Resonance Hintenlang, D.E. Jamil, K. Iselin, L.H. United States. Department of Energy. 1992-01-01 17 pages Text https://doi.org/10.2172/6707222 https://digital.library.unt.edu/ark:/67531/metadc1200458/ English eng University of Florida. Department of Nuclear Engineering Sciences. other: DE93010086 rep-no: DOE/ER/12890-3 grantno: FG02-89ER12890 doi:10.2172/6707222 osti: 6707222 https://digital.library.unt.edu/ark:/67531/metadc1200458/ ark: ark:/67531/metadc1200458 Urea Hormone Antagonists Drugs Azaarenes Progress Report Document Types Dosimetry Data Analysis Antithyroid Drugs Ribosides Guanosine Dosemeters Purines Neutron Dosimetry Chemistry Nucleotides Thiourea Nucleosides Organic Compounds Aromatics 61 Radiation Protection And Dosimetry Gamma Dosimetry Heterocyclic Compounds Thioureas 560101* -- Biomedical Sciences Applied Studies-- Radiation Effects-- Dosimetry & Monitoring-- (1992-) Carbonic Acid Derivatives Amides Organic Nitrogen Compounds Organic Sulfur Compounds Measuring Instruments Radiation Chemistry Report 1992 ftunivnotexas https://doi.org/10.2172/6707222 2022-07-30T22:08:14Z Radiation effects on urea, thiourea, guanidine carbonate and guanine sulfate were evaluated for both photon and neutron irradiations. Hydration of these materials typically provides a greatly increased sensitivity to both forms of radiation exposure, although not all materials lend themselves to this treatment without changing the chemical structure of the compound. Urea was found to be the most stable hydrated compound and provides the best sensitivity for quantifying radiation effects using NQR techniques. Urea permits a straight-forward quantification of each of the important parameters of the observed NQR signal, the FID. Several advanced data analysis methods were developed to assist in quantifying NQR spectra, both from urea and materials having more complex molecular structures, such as thiourea and guanidine sulfate. Unfortunately, these analysis techniques are frequently quite time consuming for the complex NQR spectra that result from some of these materials. The simpler analysis afforded by urea has therefore made it the prime candidate for an NQR dosimetry material. The moderate sensitivity of hydrated urea to photon irradiation does not permit this material to achieve the levels of performance required for a personnel dosimeter. It does, however, demonstrate acceptable sensitivity over dose ranges where it could provide a good biological dosimeter for several areas of radiation processing. The demonstrated photon sensitivity could permit hydrated urea to be used in applications such as food irradiation dosimetry. This material also exhibits a good sensitivity to neutron irradiation. The precise correlation between neutron exposure and the parameters of the resulting NQR spectra are currently being developed. Report Carbonic acid University of North Texas: UNT Digital Library Fid ENVELOPE(-65.939,-65.939,-68.664,-68.664) The Fid ENVELOPE(-65.939,-65.939,-68.664,-68.664) |
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University of North Texas: UNT Digital Library |
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ftunivnotexas |
language |
English |
topic |
Urea Hormone Antagonists Drugs Azaarenes Progress Report Document Types Dosimetry Data Analysis Antithyroid Drugs Ribosides Guanosine Dosemeters Purines Neutron Dosimetry Chemistry Nucleotides Thiourea Nucleosides Organic Compounds Aromatics 61 Radiation Protection And Dosimetry Gamma Dosimetry Heterocyclic Compounds Thioureas 560101* -- Biomedical Sciences Applied Studies-- Radiation Effects-- Dosimetry & Monitoring-- (1992-) Carbonic Acid Derivatives Amides Organic Nitrogen Compounds Organic Sulfur Compounds Measuring Instruments Radiation Chemistry |
spellingShingle |
Urea Hormone Antagonists Drugs Azaarenes Progress Report Document Types Dosimetry Data Analysis Antithyroid Drugs Ribosides Guanosine Dosemeters Purines Neutron Dosimetry Chemistry Nucleotides Thiourea Nucleosides Organic Compounds Aromatics 61 Radiation Protection And Dosimetry Gamma Dosimetry Heterocyclic Compounds Thioureas 560101* -- Biomedical Sciences Applied Studies-- Radiation Effects-- Dosimetry & Monitoring-- (1992-) Carbonic Acid Derivatives Amides Organic Nitrogen Compounds Organic Sulfur Compounds Measuring Instruments Radiation Chemistry Hintenlang, D.E. Jamil, K. Iselin, L.H. Mixed-Radiation-Field Dosimetry Utilizing Nuclear Quadrupole Resonance |
topic_facet |
Urea Hormone Antagonists Drugs Azaarenes Progress Report Document Types Dosimetry Data Analysis Antithyroid Drugs Ribosides Guanosine Dosemeters Purines Neutron Dosimetry Chemistry Nucleotides Thiourea Nucleosides Organic Compounds Aromatics 61 Radiation Protection And Dosimetry Gamma Dosimetry Heterocyclic Compounds Thioureas 560101* -- Biomedical Sciences Applied Studies-- Radiation Effects-- Dosimetry & Monitoring-- (1992-) Carbonic Acid Derivatives Amides Organic Nitrogen Compounds Organic Sulfur Compounds Measuring Instruments Radiation Chemistry |
description |
Radiation effects on urea, thiourea, guanidine carbonate and guanine sulfate were evaluated for both photon and neutron irradiations. Hydration of these materials typically provides a greatly increased sensitivity to both forms of radiation exposure, although not all materials lend themselves to this treatment without changing the chemical structure of the compound. Urea was found to be the most stable hydrated compound and provides the best sensitivity for quantifying radiation effects using NQR techniques. Urea permits a straight-forward quantification of each of the important parameters of the observed NQR signal, the FID. Several advanced data analysis methods were developed to assist in quantifying NQR spectra, both from urea and materials having more complex molecular structures, such as thiourea and guanidine sulfate. Unfortunately, these analysis techniques are frequently quite time consuming for the complex NQR spectra that result from some of these materials. The simpler analysis afforded by urea has therefore made it the prime candidate for an NQR dosimetry material. The moderate sensitivity of hydrated urea to photon irradiation does not permit this material to achieve the levels of performance required for a personnel dosimeter. It does, however, demonstrate acceptable sensitivity over dose ranges where it could provide a good biological dosimeter for several areas of radiation processing. The demonstrated photon sensitivity could permit hydrated urea to be used in applications such as food irradiation dosimetry. This material also exhibits a good sensitivity to neutron irradiation. The precise correlation between neutron exposure and the parameters of the resulting NQR spectra are currently being developed. |
author2 |
United States. Department of Energy. |
format |
Report |
author |
Hintenlang, D.E. Jamil, K. Iselin, L.H. |
author_facet |
Hintenlang, D.E. Jamil, K. Iselin, L.H. |
author_sort |
Hintenlang, D.E. |
title |
Mixed-Radiation-Field Dosimetry Utilizing Nuclear Quadrupole Resonance |
title_short |
Mixed-Radiation-Field Dosimetry Utilizing Nuclear Quadrupole Resonance |
title_full |
Mixed-Radiation-Field Dosimetry Utilizing Nuclear Quadrupole Resonance |
title_fullStr |
Mixed-Radiation-Field Dosimetry Utilizing Nuclear Quadrupole Resonance |
title_full_unstemmed |
Mixed-Radiation-Field Dosimetry Utilizing Nuclear Quadrupole Resonance |
title_sort |
mixed-radiation-field dosimetry utilizing nuclear quadrupole resonance |
publisher |
University of Florida. Department of Nuclear Engineering Sciences. |
publishDate |
1992 |
url |
https://doi.org/10.2172/6707222 https://digital.library.unt.edu/ark:/67531/metadc1200458/ |
long_lat |
ENVELOPE(-65.939,-65.939,-68.664,-68.664) ENVELOPE(-65.939,-65.939,-68.664,-68.664) |
geographic |
Fid The Fid |
geographic_facet |
Fid The Fid |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
other: DE93010086 rep-no: DOE/ER/12890-3 grantno: FG02-89ER12890 doi:10.2172/6707222 osti: 6707222 https://digital.library.unt.edu/ark:/67531/metadc1200458/ ark: ark:/67531/metadc1200458 |
op_doi |
https://doi.org/10.2172/6707222 |
_version_ |
1766388040569192448 |