Suitability of Japanese wild boar tooth enamel for use as an Electron Spin Resonance dosimeter

Harshman, Amber; Toyoda, Shin; Johnson, Thomas E.

doi:10.1016/j.radmeas.2018.07.001

Cited by 10 publications

(5 citation statements)

References 14 publications

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“…Exposure from β-rays from radioactive materials in the environment is an additional possible source of radiation. Assuming that the deposited density of 137 Cs is 1 MBq/m 2 , the skin dose rate from the ground was estimated to be about 0.14 mGy/h, based on the coefficient given in International Commission on Radiation Units and Measurements (ICRU) report 56 [12]. Assuming 8 h/day of direct contact with the ground, the accumulated skin dose from β-rays for six years after the FDNPS accident was 1.9 Gy.…”

Section: Effect Of External Exposure To β-Rays From Deposited Radionuclidesmentioning

confidence: 99%

“…X-band EPR tooth dosimetry, which uses extracted teeth, has been used for atomic-bomb survivors of Hiroshima and Nagasaki [8] and residents of affected settlements due to radiation released into the environment [9]. This method was also applied to some animals affected by the Chernobyl accident in 1986 [10] and the Fukushima Daiichi Nuclear Power Station (FDNPS) accident which occurred in March 2011 [11,12].…”

Section: Introductionmentioning

confidence: 99%

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L-Band Electron Paramagnetic Resonance Tooth Dosimetry Applied to Affected Cattle Teeth in Fukushima

et al. 2021

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We applied a non-destructive tooth dosimetry technique using L-band electron paramagnetic resonance (EPR) to assess radiation doses in cattle due to the Fukushima Daiichi Nuclear Power Station (FDNPS) accident, which occurred 10 years ago. The radiation exposure of cattle in the area affected by the FDNPS accident was estimated retrospectively with X-band and L-band EPR devices. Characteristic radiation-induced EPR signals were obtained from the teeth of the cattle in Fukushima, confirming their exposure. The estimated doses to the teeth were found to be consistent with the dose trends estimated for individual cows, while considerable uncertainties were seen in the doses of some tooth samples. This variation might be due to errors in the accuracy of the method but also might reflect the actual exposure because the cattle may have been exposed to higher areas of radioactivity in their quest for food and/or due to irradiation from absorption of the isotopes with localization in or near the teeth. However, at a minimum, these results confirm that L-band EPR can be used for non-destructive qualitative assessment of radiation exposure to animals using their teeth, which could be very valuable. Possible causes of the uncertainties should be investigated to enhance the value of the use of this technique.

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Section: Effect Of External Exposure To β-Rays From Deposited Radionuclidesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

L-Band Electron Paramagnetic Resonance Tooth Dosimetry Applied to Affected Cattle Teeth in Fukushima

et al. 2021

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“…Therefore, it is more desirable to measure separately for each sample. In fact, there is significant variation in dose response of ESR dosimetry among samples of the same boar, especially in older boars [22].…”

Section: Limitations Of Esr Tooth Dosimetry In Regard To Variance Andmentioning

confidence: 99%

Preliminary Study on Electron Spin Resonance Dosimetry Using Affected Cattle Teeth Due to the Fukushima Daiichi Nuclear Power Plant Accident

Inoue

Yamaguchi

Natsuhori

2019

Low-Dose Radiation Effects on Animals and Ecosystems

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To validate radiation dose of cattle affected by the Fukushima Daiichi Nuclear Power Plant (FNPP) accident, we applied electron spin resonance (ESR) tooth dosimetry. Teeth were collected from cattle that had stayed continuously after the accident in Okuma Town within the ex-evacuation zone of the FNPP accident. Radiation exposure to cattle attributed to the FNPP accident was confirmed retrospectively by X-band ESR tooth dosimetry, which was almost consistent with the estimated radiation dose from airborne and individual cattle, whereas positive radiation-induced signals (RIS) were not detectable in any sample by nondestructive measurement using L-band ESR tooth dosimetry. Although ESR tooth dosimetry reflects total radiation doses of affected animals, the uncertainty of measurement was relatively large. Therefore, in order to accurately measure the additional radiation dose from the nuclear accident, it is necessary to clarify possible causes of the uncertainty. Making continuous improvements, X-band ESR tooth dosimetry for animals in the ex-evacuation zone is ongoing.

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“…Jiao et al and suggested that cow and goat teeth samples could be alternative materials for radiation dose estimation [ 11 ]. The use of animal tooth is also important in the environmental dose assessment where no human being is involved [ 18 ].…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic and dosimetric comparison of tooth enamel separation methods for EPR retrospective dosimetry

Panda,

Joshi,

Annalakshmi

et al. 2024

Heliyon

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Suitability of Japanese wild boar tooth enamel for use as an Electron Spin Resonance dosimeter

Cited by 10 publications

References 14 publications

L-Band Electron Paramagnetic Resonance Tooth Dosimetry Applied to Affected Cattle Teeth in Fukushima

L-Band Electron Paramagnetic Resonance Tooth Dosimetry Applied to Affected Cattle Teeth in Fukushima

Preliminary Study on Electron Spin Resonance Dosimetry Using Affected Cattle Teeth Due to the Fukushima Daiichi Nuclear Power Plant Accident

Spectroscopic and dosimetric comparison of tooth enamel separation methods for EPR retrospective dosimetry

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