1
|
Ogundare FO, Mashaba M. On the thermoluminescence characteristics of NaF and KCl. Appl Radiat Isot 2024; 204:111127. [PMID: 38043247 DOI: 10.1016/j.apradiso.2023.111127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 11/07/2023] [Accepted: 11/24/2023] [Indexed: 12/05/2023]
Abstract
Thermoluminescence (TL) properties of NaF and KCl are investigated in order to assess their suitability as radiation dosemeters for retrospective dosimetry. TL measurements were made on samples irradiated to different doses (1-20 Gy) and heated at a rate ranging from 0.4 to 4 °C/s in a TL/OSL reader. The TL glow curves of NaF, readout at 1oCs-1, exhibited six apparent peaks around 38.7 ± 1.4, 63.5 ± 0.5, 105.5 ± 0.4, 237.5 ± 0.8, 299.0 ± 1.0 and 347.5 ± 0.7 °C with a shoulder around 168.0 ± 2.3 °C. Those of KCl have three clearly identifiable peaks around 44.0 ± 0.3, 95.3 ± 0.8 and 160.5 ± 0.7 °C. Glow curve deconvolution, however, revealed that the glow curves of NaF and KCl are best fitted with nine and five glow peaks respectively. In NaF, all the peaks exhibited linearity of dose-response in the entire dose range considered in this study. Only the peaks around 95.3 ± 0.8 and 160.5 ± 0.7 °C exhibited linear dose-response in the entire dose range for KCl. In NaF, there was thermal quenching of the TL responses of the peaks around 63.5 ± 0.5, 105.5 ± 0.4 and 237.5 ± 0.8 °C, and thermal enhancement of responses for peaks around 299.0 ± 1.0 and 347.5 ± 0.7 °C. With respect to KCl, the TL responses of all the peaks exhibited thermal enhancement as heating rate was increased. The activation energies associated with the thermal enhancement and quenching of the peaks' TL responses are presented. The repeated use of an aliquot of NaF five times for dose measurements resulted in an acceptable variation in sensitivity, on the other hand the sensitivity of KCl decreased with increasing number of repeat use. The activation energy of the electron traps associated with the glow peaks in both crystals calculated in this study are comparable to previously published values. Both crystals can be used for retrospective dosimetry however change in sensitivity with repeat use of an aliquot will have to be accounted for in the case of KCl.
Collapse
Affiliation(s)
- F O Ogundare
- Department of Physics, University of Botswana, Private Bag UB 0022, Gaborone, Botswana.
| | - M Mashaba
- Department of Physics, University of Botswana, Private Bag UB 0022, Gaborone, Botswana
| |
Collapse
|
2
|
Possibility of using olive oil as a novel dosimeter in radiological accidents: First experimental results. RADIAT MEAS 2023. [DOI: 10.1016/j.radmeas.2023.106922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
|
3
|
Thermoluminescence and optically stimulated luminescence properties of in-vitro aged dental porcelain. Radiat Phys Chem Oxf Engl 1993 2023. [DOI: 10.1016/j.radphyschem.2023.110758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
4
|
Gaikwad SU, Patil RR, Kulkarni MS, Dudhe CM, Moharil SV. DEVELOPMENT OF NACL-BASED OPTICALLY STIMULATED LUMINESCENT PHOSPHORS FOR THE POSSIBLE APPLICATIONS IN DOSIMETRY. RADIATION PROTECTION DOSIMETRY 2020; 192:27-35. [PMID: 33283222 DOI: 10.1093/rpd/ncaa184] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 10/04/2020] [Accepted: 10/12/2020] [Indexed: 06/12/2023]
Abstract
New highly sensitive optically stimulated luminescent phosphors with NaCl moiety and dopants Ca,Cu,P/Mg,Cu,P are developed. These phosphors show very high optically stimulated luminescence (OSL) sensitivity. The dose response for NaCl:Ca,Cu,P is linear up to 1.2 Gy and for NaCl:Mg,Cu,P is slightly sub linear from 0.2 Gy. These phosphors show 30% fading during first 4 and later signal gets stabilised with no further signal loss. These sensitive phosphors will find applications in radiation dosimetry using OSL.
Collapse
Affiliation(s)
- S U Gaikwad
- Institute of Science, R.T. Road Civil Lines, Nagpur, India
| | - R R Patil
- Institute of Forensic Science, R.T. Road Civil Lines, Nagpur, India
| | - M S Kulkarni
- Health Physics Division, Bhabha Atomic Research Centre, Mumbai, India
| | - C M Dudhe
- Government Institute of Science, Gadchiroli, India
| | | |
Collapse
|
5
|
Optically stimulated luminescence of cowrie shells. Appl Radiat Isot 2020; 167:109463. [PMID: 33059191 DOI: 10.1016/j.apradiso.2020.109463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Revised: 09/17/2020] [Accepted: 10/07/2020] [Indexed: 11/24/2022]
Abstract
Characteristics of continuous wave optically stimulated luminescence (CW-OSL) and linear modulation OSL (LM-OSL) from three different types of cowrie shells are presented. Irradiated samples were optically stimulated at 72 mW/cm2 for CW-OSL and linearly ramped from zero to 72 mW/cm2 to obtain LM-OSL. The measured CW-OSL and LM-OSL curves of the shells are each determined to consist of three components namely fast, medium and slow components. The fast, medium and slow LM-OSL components peak at 17.0 ± 0.8, 45.0 ± 1.8 and 140.8 ± 6.7 s respectively for all samples. In addition, peak positions are independent of dose. The photoionization cross-sections of the OSL traps for the three components estimated from CW-OSL are similar to those determined using LM-OSL. The OSL of the three components increases linearly with dose. The coefficient of variation of responses from repeated measurements of same aliquot lies below 2.3%. The shells are thus potential materials for retrospective dosimetry.
Collapse
|
6
|
Study of dental zirconia reinforced lithium silicate for its use as a personal accidental dosimeter. Appl Radiat Isot 2020; 157:109024. [DOI: 10.1016/j.apradiso.2019.109024] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 12/10/2019] [Accepted: 12/10/2019] [Indexed: 11/18/2022]
|
7
|
Işik E, Toktamiş H, Işik İ. Analysis of thermoluminescence characteristics of a lithium disilicate glass ceramic using a nonlinear autoregressive with exogenous input model. LUMINESCENCE 2020; 35:827-834. [DOI: 10.1002/bio.3788] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/14/2020] [Accepted: 01/22/2020] [Indexed: 11/10/2022]
Affiliation(s)
- Esme Işik
- Department of OpticianMalatya Turgut Özal University Malatya Turkey
| | - Hüseyin Toktamiş
- Department of Engineering Physics, Faculty of EngineeringUniversity of Gaziantep Gaziantep Turkey
| | - İbrahim Işik
- Department of Electrical and Electronics Engineering, Faculty of Engineeringİnönü University Malatya Turkey
| |
Collapse
|
8
|
Isik E, Toktamis H. TLD characteristic of glass, feldspathic and lithium disilicate ceramics. LUMINESCENCE 2019; 34:272-279. [PMID: 30746856 DOI: 10.1002/bio.3605] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 01/01/2019] [Accepted: 01/06/2019] [Indexed: 11/05/2022]
Abstract
Thermoluminescence (TL) emission of dental ceramics could be potentially used for retrospective dosimetry purposes as this allows a quick and reliable dose assessment in case of nuclear accident or bad use of a nuclear attack. This paper reports on the chemical and luminescence characterization of glass, feldspathic and lithium disilicate glass ceramic (LS2 ). Swedish and Turkish dental ceramics supplied by Vivadent Ivoclar considering: (i) the dose response in the range 10 Gy to 6.9 kGy which displays a linear dose-response at low dose values up to 36 Gy (glass and feldspathic ceramics) and shows sublinear behavior from 12 Gy to 6 kGy (lithium disilicate glass ceramics), (ii) a reproducibility of the TL signal in which the area under the glow curve increased about 25% after 10 cycles for glass and lithium disilicate ceramics and increased about 30% after seven cycles for feldspathic ceramics, (iii) stability of the luminescence emission with the elapsed time and (iv) effect of the heating rate. Glass, lithium disilicate and feldspathic ceramics display a complex UV-blue glow emission that can be respectively fitted to five and four groups of components assuming first-order kinetics behavior.
Collapse
Affiliation(s)
- Esme Isik
- Department of Engineering Physics, Faculty of Engineering, University of Gümüşhane, Gümüşhane, Turkey
| | - Huseyin Toktamis
- Department of Engineering Physics, Faculty of Engineering, University of Gaziantep, Gaziantep, Turkey
| |
Collapse
|
9
|
Correcher V, Briatte C, Boronat C, Garcia-Guinea J. Radiation effect on cathodoluminescence and thermoluminescence emission of Ca-rich oxalates from the human body. LUMINESCENCE 2018; 33:1438-1444. [PMID: 30378245 DOI: 10.1002/bio.3571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/26/2018] [Accepted: 09/27/2018] [Indexed: 11/08/2022]
Abstract
The radiation effect of luminescence emission of Ca-rich oxalate biogenic materials (gallbladder and renal calculi) and a commercial standard sample (CaC2 O4 ·H2 O) is reported. The samples were characterized by environmental scanning electron microscopy, energy dispersive X-ray spectroscopy, thermogravimetric and differential thermal analyses, display complex cathodoluminescence (CL) and thermoluminescence (TL) glow emissions. CL spectra (in the UV-infrared range) displayed non-well defined peaks, and exhibited emission at: (i) higher energies (300-490 nm) mainly associated with non-bridging oxygen hole centers, oxygen-deficient centers and peroxy intrinsic defects, regardless of the sample; and (ii) higher, narrow and sharp wavebands, in the red region, probably induced by the presence of traces of Sm3+ (4 G5/2 →6 H9/2 transition) and/or Tb3+ (5 D4 →7 F3 transition) only for mineral-like materials in the human body. The UV-blue TL emission showed low-intensity maxima in which it was possible to distinguish at least four groups of components in each sample.
Collapse
Affiliation(s)
| | | | | | - Javier Garcia-Guinea
- CSIC. Museo Nacional de Ciencias Naturales, C/José Gutiérrez Abascal 2, Madrid, Spain
| |
Collapse
|
10
|
Ratliff ST, Barry K. Characterization of Ivoclar Vivadent Dental Restoration Material for 137CS Retrospective Radiation Dosimetry. HEALTH PHYSICS 2018; 115:212-220. [PMID: 29889699 DOI: 10.1097/hp.0000000000000806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Retrospective dosimetry is the method of using materials on or near a person who is exposed to ionizing radiation to determine the amount of radiation received by the person. A possible candidate material for retrospective dosimetry is Ivoclar Vivadent IPS e.max® CAD ceramic dental restoration material, which exhibits radiation-induced thermoluminescence when exposed to gamma- and x-ray radiation from a Cs source. The purpose of this paper is to characterize the material and study the behavior of the thermoluminescence signal with radiation dose and with delay time between radiation exposure and thermoluminescence measurement. The first glow peak is well-modeled by a first-order glow curve deconvolution formula. The height of the first glow peak is approximately linear with dose. The fading of the signal with time is approximately described by a power law curve with cutoff. The material appears to be suitable for retrospective radiation dosimetry.
Collapse
Affiliation(s)
- Steven T Ratliff
- Department of Physics and Astronomy, Saint Cloud State University, 720 Fourth Avenue South, Saint Cloud, MN 56301
| | - Kawsu Barry
- Department of Physics and Astronomy, Saint Cloud State University
| |
Collapse
|
11
|
|
12
|
Bailiff I, Sholom S, McKeever S. Retrospective and emergency dosimetry in response to radiological incidents and nuclear mass-casualty events: A review. RADIAT MEAS 2016. [DOI: 10.1016/j.radmeas.2016.09.004] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
|
13
|
Ekendahl D, Bulánek B, Judas L. Comparative measurements of external radiation exposure using mobile phones, dental ceramic, household salt and conventional personal dosemeters. RADIAT MEAS 2015. [DOI: 10.1016/j.radmeas.2014.11.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
14
|
Yukihara EG, McKeever SW, Akselrod MS. State of art: Optically stimulated luminescence dosimetry – Frontiers of future research. RADIAT MEAS 2014. [DOI: 10.1016/j.radmeas.2014.03.023] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
15
|
Soni A, Mishra DR, Polymeris GS, Bhatt BC, Kulkarni MS. OSL and thermally assisted OSL response in dental enamel for its possible application in retrospective dosimetry. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2014; 53:763-774. [PMID: 24929347 DOI: 10.1007/s00411-014-0554-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 06/07/2014] [Indexed: 06/03/2023]
Abstract
Dental enamel was studied for its thermoluminescence (TL) and optically stimulated luminescence (OSL) defects. The TL studies showed a wide glow curve with multiple peaks. The thermally assisted OSL (TA-OSL) studies showed that the integrated TA-OSL and thus OSL signal increases with readout temperature between 100 and 250 °C, due to the temperature dependence of OSL. The thermally assisted energy E A associated with this increase is found to be 0.21 ± 0.015 eV. On the other hand, the signal intensity decreases with temperature between 260 and 450 °C. This decrease could be due to depletion of OSL active traps or possible thermal quenching. The increase of the OSL signal at increased temperature can be used to enhance the sensitivity of dental enamel for ex vivo measurements in retrospective dosimetry. The emission and excitation spectra of its luminescence centers were studied by photoluminescence and were found to be at 412 and 324 nm, respectively. It was found to possess multiple OSL active traps having closely lying photoionization cross sections characterized by continuous wave OSL and nonlinear OSL methods. The investigated dental enamel samples showed a linear OSL dose response up to 500 Gy. The dose threshold was found to be 100 mGy using a highly sensitive compact OSL reader with blue LED (470 nm) stimulation.
Collapse
Affiliation(s)
- Anuj Soni
- Radiological Physics and Advisory Division, Bhabha Atomic Research Center, Trombay, 400 085, Mumbai, India,
| | | | | | | | | |
Collapse
|
16
|
Ekendahl D, Judas L, Sukupova L. OSL and TL retrospective dosimetry with a fluorapatite glass-ceramic used for dental restorations. RADIAT MEAS 2013. [DOI: 10.1016/j.radmeas.2013.01.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
17
|
Geber-Bergstrand T, Bernhardsson C, Mattsson S, Rääf CL. Retrospective dosimetry using OSL of tooth enamel and dental repair materials irradiated under wet and dry conditions. RADIATION AND ENVIRONMENTAL BIOPHYSICS 2012; 51:443-9. [PMID: 22972601 DOI: 10.1007/s00411-012-0434-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Accepted: 08/30/2012] [Indexed: 05/16/2023]
Abstract
Following a radiological or nuclear emergency event, there is a need for quick and reliable dose estimations of potentially exposed people. In situations where dosimeters are not readily available, the dose estimations must be carried out using alternative methods. In the present study, the optically stimulated luminescence (OSL) properties of tooth enamel and different dental repair materials have been examined. Specimens of the materials were exposed to gamma and beta radiation in different types of liquid environments to mimic the actual irradiation situation in the mouth. Measurements were taken using a Risø TL/OSL reader, and irradiations were made using a (90)Sr/(90)Y source and a linear accelerator (6 MV photons). Results show that the OSL signal from tooth enamel decreases substantially when the enamel is kept in a wet environment. Thus, tooth enamel is not reliable for retrospective dose assessment without further studies of the phenomenon. Dental repair materials, on the other hand, do not exhibit the same effect when exposed to liquids. In addition, dose-response and fading measurements of the dental repair materials show promising results, making these materials highly interesting for retrospective dosimetry. The minimum detectable dose for the dental repair materials has been estimated to be 20-185 mGy.
Collapse
Affiliation(s)
- Therése Geber-Bergstrand
- Medical Radiation Physics, Department of Clinical Sciences, Malmö, Lund University, Skåne University Hospital Malmö, 205 02, Malmö, Sweden,
| | | | | | | |
Collapse
|
18
|
Ekendahl D, Judas L. Retrospective dosimetry with alumina substrate from electronic components. RADIATION PROTECTION DOSIMETRY 2012; 150:134-141. [PMID: 21964904 DOI: 10.1093/rpd/ncr380] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Alumina substrate can be found in electronic components used in portable electronic devices. The material is radiation sensitive and can be applied in dosimetry using thermally or optically stimulated luminescence. Electronic portable devices such as mobile phones, USB flash discs, mp3 players, etc., which are worn close to the body, can represent personal dosemeters for members of the general public in situations of large-scale radiation accidents or malevolent acts with radioactive materials. This study investigated dosimetric properties of alumina substrates and aspects of using mobile phones as personal dosemeters. The alumina substrates exhibited favourable dosimetry characteristics. However, anomalous fading had to be properly corrected in order to achieve sufficient precision in dose estimate. Trial dose reconstruction performed by means of two mobile phones proved that mobile phones can be used for reconstruction of personal doses.
Collapse
Affiliation(s)
- Daniela Ekendahl
- National Radiation Protection Institute, Bartoškova 28, CZ-140 00 Prague 4, Czech Republic.
| | | |
Collapse
|
19
|
Veronese I, Galli A, Cantone MC, Martini M, Vernizzi F, Guzzi G. Study of TSL and OSL properties of dental ceramics for accidental dosimetry applications. RADIAT MEAS 2010. [DOI: 10.1016/j.radmeas.2009.11.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
20
|
|
21
|
Göksu HY, Bailiff IK. Luminescence dosimetry using building materials and personal objects. RADIATION PROTECTION DOSIMETRY 2006; 119:413-20. [PMID: 16829510 DOI: 10.1093/rpd/nci699] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
There is a growing public awareness of the risk of accidental radiation exposure due to ageing nuclear power installations, illegal dumping of nuclear waste and terrorist activities, and of the consequential health risks to populations in addition to social and economic disturbance extending beyond national boundaries. In the event of catastrophic incidents where no direct radiation monitoring data are available, the application of retrospective dosimetry techniques such as luminescence may be employed with materials from the immediate environment to confirm values of cumulative gamma dose to compare with or augment computational modeling calculations. Application of the method to post-Chernobyl studies has resulted in the development of new procedures using fired building materials with the capability to measure cumulative doses owing to artificial sources of gamma radiation as low as 20 mGy. Combined with Monte Carlo simulations of photon transport, values of cumulative dose in brick can be presented in a form suitable for use in dose-reconstruction efforts. Recent investigations have also shown that certain types of cementitious building material, including concrete, mortar and plaster, and personal objects in the form of telephone cards containing microchips and dental ceramics have the potential to be used for retrospective dosimetry. Examples of the most recent research concerning new materials and examples of application to sites in the Former Soviet Union are discussed.
Collapse
Affiliation(s)
- H Y Göksu
- GSF-Forschungszentrum für Umwelt und Gesundheit, Institut für Strahlenschutz Ingolstädter Landstrasse 1, D-85764 Neuherberg, Germany.
| | | |
Collapse
|
22
|
Bailiff I, Mikhailik V. Spatially-resolved measurement of optically stimulated luminescence and time-resolved luminescence. RADIAT MEAS 2003. [DOI: 10.1016/s1350-4487(02)00187-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|