Energy response of a two-dimensional sheet-type LiF:Mg,Cu,P TL dosemeter to photons

Radiation Protection Dosimetry
Akiko KonnaiYuhzoh Ishikawa

Abstract

A 2-D tissue-equivalent sheet-type dosemeter (NTL sheet) was developed using thermoluminescent material of LiF:Mg,Cu,P (NTL-250). The energy responses of the NTL sheet and NTL-250 powder were measured with 10-150 keV monoenergetic photons from synchrotron radiation at SPring-8. The sample was irradiated by a rotational method for the uniform irradiation with the narrow beam. Linearity of the NTL-250 was confirmed up to 2 Gy. Energy responses of the NTL sheet and NTL-250 powder were close to that of soft tissue. On the other hand, the BaSO(4) sheet, which has been used practically, showed the response that the sensitivity approximately 60 keV was 100 times higher than that for (60)Co gamma rays. Therefore the NTL sheet can be said to have excellent properties for dose measurements.

References

Dec 1, 1998·Physics in Medicine and Biology·T KronK Hyodo
Apr 15, 2006·Radiation Protection Dosimetry·N NariyamaY Ishikawa

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Citations

Apr 15, 2006·Radiation Protection Dosimetry·N NariyamaY Ishikawa

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