Epithermal neutron beam dosimetry with thermoluminescence dosemeters for boron neutron capture therapy

Carita Aschan, Mika Toivonen, Sauli Savolainen, Tiina Seppälä, Iiro Auterinen

Research output: Contribution to journalArticleScientificpeer-review

23 Citations (Scopus)

Abstract

The characteristics of thermoluminescence (TL) dosemeters were investigated for the determination of dose components in tissue substitute phantoms irradiated with an epithermal neutron beam for boron neutron capture therapy (BNCT). New two-layer TL detectors of a Dosimeter Niewiadomski were tested for neutron and gamma detection: MTS-Ns with a thin active LiF:Mg,Ti layer for reduced self-shielding of thermal neutrons and MCP-7s (7LiF:Mg,Cu,P) with low sensitivity for neutrons compared with gamma radiation. For comparison the conventional TLD-100 and TLD-700 detectors of Harshaw were used. MCP-7s dosemeters were found to be less sensitive for thermal neutrons and therefore better than TLD-700. However, the thermal neutron sensitivity of MCP-7s dosemeters is relatively high, e.g. the correction factor for the excess TL signal above the gamma signal is ~0.5 at the depth of the thermal neutron fluence maximum. MTS-Ns TL dosemeters were found capable of measuring the relative neutron fluence and to be a useful addition to the activation foils in BNCT neutron dosimetry.
Original languageEnglish
Pages (from-to)47-56
Number of pages10
JournalRadiation Protection Dosimetry
Volume81
Issue number1
DOIs
Publication statusPublished - 1999
MoE publication typeA1 Journal article-refereed

Fingerprint

Boron Neutron Capture Therapy
neutron beams
Neutrons
thermoluminescence
dosimeters
therapy
boron
thermal neutrons
neutrons
Hot Temperature
fluence
detectors
shielding
foils
Gamma Rays
activation
gamma rays
substitutes
dosage
sensitivity

Cite this

Aschan, Carita ; Toivonen, Mika ; Savolainen, Sauli ; Seppälä, Tiina ; Auterinen, Iiro. / Epithermal neutron beam dosimetry with thermoluminescence dosemeters for boron neutron capture therapy. In: Radiation Protection Dosimetry. 1999 ; Vol. 81, No. 1. pp. 47-56.
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title = "Epithermal neutron beam dosimetry with thermoluminescence dosemeters for boron neutron capture therapy",
abstract = "The characteristics of thermoluminescence (TL) dosemeters were investigated for the determination of dose components in tissue substitute phantoms irradiated with an epithermal neutron beam for boron neutron capture therapy (BNCT). New two-layer TL detectors of a Dosimeter Niewiadomski were tested for neutron and gamma detection: MTS-Ns with a thin active LiF:Mg,Ti layer for reduced self-shielding of thermal neutrons and MCP-7s (7LiF:Mg,Cu,P) with low sensitivity for neutrons compared with gamma radiation. For comparison the conventional TLD-100 and TLD-700 detectors of Harshaw were used. MCP-7s dosemeters were found to be less sensitive for thermal neutrons and therefore better than TLD-700. However, the thermal neutron sensitivity of MCP-7s dosemeters is relatively high, e.g. the correction factor for the excess TL signal above the gamma signal is ~0.5 at the depth of the thermal neutron fluence maximum. MTS-Ns TL dosemeters were found capable of measuring the relative neutron fluence and to be a useful addition to the activation foils in BNCT neutron dosimetry.",
author = "Carita Aschan and Mika Toivonen and Sauli Savolainen and Tiina Sepp{\"a}l{\"a} and Iiro Auterinen",
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Epithermal neutron beam dosimetry with thermoluminescence dosemeters for boron neutron capture therapy. / Aschan, Carita; Toivonen, Mika; Savolainen, Sauli; Seppälä, Tiina; Auterinen, Iiro.

In: Radiation Protection Dosimetry, Vol. 81, No. 1, 1999, p. 47-56.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Epithermal neutron beam dosimetry with thermoluminescence dosemeters for boron neutron capture therapy

AU - Aschan, Carita

AU - Toivonen, Mika

AU - Savolainen, Sauli

AU - Seppälä, Tiina

AU - Auterinen, Iiro

PY - 1999

Y1 - 1999

N2 - The characteristics of thermoluminescence (TL) dosemeters were investigated for the determination of dose components in tissue substitute phantoms irradiated with an epithermal neutron beam for boron neutron capture therapy (BNCT). New two-layer TL detectors of a Dosimeter Niewiadomski were tested for neutron and gamma detection: MTS-Ns with a thin active LiF:Mg,Ti layer for reduced self-shielding of thermal neutrons and MCP-7s (7LiF:Mg,Cu,P) with low sensitivity for neutrons compared with gamma radiation. For comparison the conventional TLD-100 and TLD-700 detectors of Harshaw were used. MCP-7s dosemeters were found to be less sensitive for thermal neutrons and therefore better than TLD-700. However, the thermal neutron sensitivity of MCP-7s dosemeters is relatively high, e.g. the correction factor for the excess TL signal above the gamma signal is ~0.5 at the depth of the thermal neutron fluence maximum. MTS-Ns TL dosemeters were found capable of measuring the relative neutron fluence and to be a useful addition to the activation foils in BNCT neutron dosimetry.

AB - The characteristics of thermoluminescence (TL) dosemeters were investigated for the determination of dose components in tissue substitute phantoms irradiated with an epithermal neutron beam for boron neutron capture therapy (BNCT). New two-layer TL detectors of a Dosimeter Niewiadomski were tested for neutron and gamma detection: MTS-Ns with a thin active LiF:Mg,Ti layer for reduced self-shielding of thermal neutrons and MCP-7s (7LiF:Mg,Cu,P) with low sensitivity for neutrons compared with gamma radiation. For comparison the conventional TLD-100 and TLD-700 detectors of Harshaw were used. MCP-7s dosemeters were found to be less sensitive for thermal neutrons and therefore better than TLD-700. However, the thermal neutron sensitivity of MCP-7s dosemeters is relatively high, e.g. the correction factor for the excess TL signal above the gamma signal is ~0.5 at the depth of the thermal neutron fluence maximum. MTS-Ns TL dosemeters were found capable of measuring the relative neutron fluence and to be a useful addition to the activation foils in BNCT neutron dosimetry.

U2 - 10.1093/oxfordjournals.rpd.a032569

DO - 10.1093/oxfordjournals.rpd.a032569

M3 - Article

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EP - 56

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