Thermoluminescent sheets for the detection of high energy hadronic and electromagnetic showers

Okamoto, Y.; Kawaguchi, S.; Kino, Saiko; Miono, S.; Kitajima, T.; Misaki, A.; Saito, T.

doi:10.1016/0168-9002(86)90845-4

Cited by 30 publications

(8 citation statements)

References 4 publications

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“…Because the TL sheets were transported back to Japan between measurement and analysis, the signal from TL sheets faded over the transit period. 7 Therefore, absolute dosimetry measurements were not desired in the current study. The nominal dose rates used throughout the study were essentially the reading rates of the TL sheets.…”

Section: Experimental Setup and Measurement Techniquesmentioning

confidence: 99%

“…An alternative is a thermoluminescent sheet (TL sheet) made of Teflon homogeneously mixed with thermoluminescence powders (BaSO 4 : Eu doped). [7][8][9][10] This TL sheet has advantages of high sensitivity, high spatial resolution, and linear response over a very wide range (approximately 0.002 to 5000 cGy) of absorbed dose. 10 In this work, we present the first application of TL sheet for relative dose measurements in the near fields of 125 I sources.…”

Section: Introductionmentioning

confidence: 99%

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Near‐field dosimetry of sources for interstitial brachytherapy implants measured using thermoluminescent sheets

2004

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The dosimetric characteristics were measured for two types of 125I low-energy photon-emitting sources by using a wide and highly sensitive thermoluminescent (TL) sheet film, which was developed for two-dimensional dose distribution measurements. The TL film is made of Teflon homogeneously mixed with small powders of thermoluminescence (BaSO4:Eu doped). Various dosimetric parameters (i.e., radial dose function, 2D and 1D anisotropy functions) of model 6711 and 6702 125I sources were obtained at various distances from the source surfaces to 15 mm. These parameters obtained with TL sheet were compared with the data recommended in the updated AAPM TG-43 report. The radial dose functions measured with TL sheet are in agreement with those established data of model 6711 125I seed and model 6702 125I seed at most of the distances within 5% and 7%, respectively. All the measured anisotropy functions showed symmetry about the longitudinal source axis. The anisotropy of dose distributions was clearly present in the immediate vicinity of the source edges. The measured 2D anisotropy function values at 1 cm are in reasonably good agreement with the recommended values. The differences at two points in the 1D anisotropy functions measured with TL sheet and the established data at 1 cm from source center were 0.7% and 1.9% for model 6711 and 6702 125I sources, respectively; the differences at 0.5 cm were 1.5% and 1.7% for model 6711 and 6702 125I sources, respectively. The relative dosimetric characteristics in the vicinity of actual interstitial brachytherapy sources containing 125I have been experimentally determined by using the TL sheet as a 2D dosimeter.

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Section: Experimental Setup and Measurement Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Near‐field dosimetry of sources for interstitial brachytherapy implants measured using thermoluminescent sheets

2004

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“…A TL sheet and its read-out system have been developed for studying hadronic and electromagnetic cascade showers [8][9][10][11]. The TL sheet is a mixture of BaSO 4 :Eu doped and Teflon.…”

Section: Tl Sheet Sensitivity To Slow Ionsmentioning

confidence: 99%

Search for nuclearites using the TL stack detector

Okei¹,

Wada²,

Yamashita³

et al. 2001

J. Phys. G: Nucl. Part. Phys.

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It is shown that a thermoluminescent (TL) sheet stack detector, consisting of TL sheets and medical x-ray films, is an effective nuclearite detector. Nuclearite energy loss is not explicitly used for the estimation of the TL stack sensitivity to nuclearites, but implicitly by considering ways of energy deposition. The 90% confidence level flux limit obtained with the TL stack detector is given for a certain β-M range of nuclearites. For nuclearites of β = 10 −3 at sea level and M 2 × 10 15 GeV c −2 , the limit is 1.3 × 10 −13 s −1 cm −2 sr −1 .

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“…The first preparation of BaSO 4 , doped by Dy, was reported in 1974 [7]. Then, a second preparation was carried out in the years 1984 [8] and 1986 [9], and used to study hadronic and electromagnetic cascade showers. Also BaSO 4 doped with suitable impurities (e.g.…”

Section: Introductionmentioning

confidence: 99%

Characterization and TSL dosimetric properties of Mn doped BaSO4 phosphor prepared by recrystallisation method

Manam

Das

2010

Journal of Alloys and Compounds

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Thermoluminescent sheets for the detection of high energy hadronic and electromagnetic showers

Cited by 30 publications

References 4 publications

Near‐field dosimetry of sources for interstitial brachytherapy implants measured using thermoluminescent sheets

Near‐field dosimetry of sources for interstitial brachytherapy implants measured using thermoluminescent sheets

Search for nuclearites using the TL stack detector

Characterization and TSL dosimetric properties of Mn doped BaSO4 phosphor prepared by recrystallisation method

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