title: Energy response of a two-dimensional sheet-type LiF:Mg,Cu,P TL dosemeter to photons.
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.
authors.affiliation: National Maritime Research Institute, Mitaka, Tokyo 181-0004, Japan. konnai@nmri.go.jp
authors.forename: Akiko
authors.initials: A
authors.lastname: Konnai
authors.forename: Nobuteru
authors.initials: N
authors.lastname: Nariyama
authors.forename: Seiki
authors.initials: S
authors.lastname: Ohnishi
authors.forename: Naoteru
authors.initials: N
authors.lastname: Odano
authors.forename: Naoto
authors.initials: N
authors.lastname: Ozasa
authors.forename: Yuhzoh
authors.initials: Y
authors.lastname: Ishikawa
mesh_terms: D003300:Copper / Q000737:chemistry / Q000528:radiation effects; D004307:Dose-Response Relationship, Radiation; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005459:Fluorides / Q000737:chemistry* / Q000528:radiation effects*; D018499:Linear Energy Transfer; D018020:Lithium Compounds / Q000737:chemistry* / Q000528:radiation effects*; D008274:Magnesium / Q000737:chemistry / Q000528:radiation effects; D008422:Materials Testing; D010758:Phosphorus / Q000737:chemistry / Q000528:radiation effects; D017785:Photons; D011829:Radiation Dosage; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013819:Thermoluminescent Dosimetry / Q000295:instrumentation* / Q000379:methods
chemical_list: D018020:Lithium Compounds; C027651:lithium fluoride; D010758:Phosphorus; D003300:Copper; D008274:Magnesium; D005459:Fluorides