Feasibility study on using imaging plates to estimate thermal neutron fluence in neutron-gamma mixed fields

Toshioh Fujibuchi, Yu Tanabe, Takeji Sakae, Toshiyuki Terunuma, Tomonori Isobe, Hiraku Kawamura, Kiyoshi Yasuoka, Tetsuro Matsumoto, Hideki Harano, Jun Nishiyama, Akihiko Masuda, Akihiro Nohtomi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In current radiotherapy, neutrons are produced in a photonuclear reaction when incident photon energy is higher than the threshold. In the present study, a method of discriminating the neutron component was investigated using an imaging plate (IP) in the neutron-gamma-ray mixed field. Two types of IP were used: a conventional IP for beta- and gamma rays, and an IP doped with Gd for detecting neutrons. IPs were irradiated in the mixed field, and the photo-stimulated luminescence (PSL) intensity of the thermal neutron component was discriminated using an expression proposed herein. The PSL intensity of the thermal neutron component was proportional to thermal neutron fluence. When additional irradiation of photons was added to constant neutron irradiation, the PSL intensity of the thermal neutron component was not affected. The uncertainty of PSL intensities was approximately 11.4 %. This method provides a simple and effective means of discriminating the neutron component in a mixed field.

Original languageEnglish
Article numberncq493
Pages (from-to)394-400
Number of pages7
JournalRadiation Protection Dosimetry
Volume147
Issue number3
DOIs
Publication statusPublished - Nov 1 2011
Externally publishedYes

Fingerprint

Neutrons
Feasibility Studies
thermal neutrons
fluence
Hot Temperature
neutrons
luminescence
estimates
Luminescence
gamma rays
photonuclear reactions
Gamma Rays
neutron irradiation
photons
Photons
radiation therapy
Beta Particles
irradiation
thresholds
Uncertainty

All Science Journal Classification (ASJC) codes

  • Radiation
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging
  • Public Health, Environmental and Occupational Health

Cite this

Feasibility study on using imaging plates to estimate thermal neutron fluence in neutron-gamma mixed fields. / Fujibuchi, Toshioh; Tanabe, Yu; Sakae, Takeji; Terunuma, Toshiyuki; Isobe, Tomonori; Kawamura, Hiraku; Yasuoka, Kiyoshi; Matsumoto, Tetsuro; Harano, Hideki; Nishiyama, Jun; Masuda, Akihiko; Nohtomi, Akihiro.

In: Radiation Protection Dosimetry, Vol. 147, No. 3, ncq493, 01.11.2011, p. 394-400.

Research output: Contribution to journalArticle

Fujibuchi, T, Tanabe, Y, Sakae, T, Terunuma, T, Isobe, T, Kawamura, H, Yasuoka, K, Matsumoto, T, Harano, H, Nishiyama, J, Masuda, A & Nohtomi, A 2011, 'Feasibility study on using imaging plates to estimate thermal neutron fluence in neutron-gamma mixed fields', Radiation Protection Dosimetry, vol. 147, no. 3, ncq493, pp. 394-400. https://doi.org/10.1093/rpd/ncq493
Fujibuchi, Toshioh ; Tanabe, Yu ; Sakae, Takeji ; Terunuma, Toshiyuki ; Isobe, Tomonori ; Kawamura, Hiraku ; Yasuoka, Kiyoshi ; Matsumoto, Tetsuro ; Harano, Hideki ; Nishiyama, Jun ; Masuda, Akihiko ; Nohtomi, Akihiro. / Feasibility study on using imaging plates to estimate thermal neutron fluence in neutron-gamma mixed fields. In: Radiation Protection Dosimetry. 2011 ; Vol. 147, No. 3. pp. 394-400.
@article{6d805c33a7184b1c81aca1434461b463,
title = "Feasibility study on using imaging plates to estimate thermal neutron fluence in neutron-gamma mixed fields",
abstract = "In current radiotherapy, neutrons are produced in a photonuclear reaction when incident photon energy is higher than the threshold. In the present study, a method of discriminating the neutron component was investigated using an imaging plate (IP) in the neutron-gamma-ray mixed field. Two types of IP were used: a conventional IP for beta- and gamma rays, and an IP doped with Gd for detecting neutrons. IPs were irradiated in the mixed field, and the photo-stimulated luminescence (PSL) intensity of the thermal neutron component was discriminated using an expression proposed herein. The PSL intensity of the thermal neutron component was proportional to thermal neutron fluence. When additional irradiation of photons was added to constant neutron irradiation, the PSL intensity of the thermal neutron component was not affected. The uncertainty of PSL intensities was approximately 11.4 {\%}. This method provides a simple and effective means of discriminating the neutron component in a mixed field.",
author = "Toshioh Fujibuchi and Yu Tanabe and Takeji Sakae and Toshiyuki Terunuma and Tomonori Isobe and Hiraku Kawamura and Kiyoshi Yasuoka and Tetsuro Matsumoto and Hideki Harano and Jun Nishiyama and Akihiko Masuda and Akihiro Nohtomi",
year = "2011",
month = "11",
day = "1",
doi = "10.1093/rpd/ncq493",
language = "English",
volume = "147",
pages = "394--400",
journal = "Radiation Protection Dosimetry",
issn = "0144-8420",
publisher = "Oxford University Press",
number = "3",

}

TY - JOUR

T1 - Feasibility study on using imaging plates to estimate thermal neutron fluence in neutron-gamma mixed fields

AU - Fujibuchi, Toshioh

AU - Tanabe, Yu

AU - Sakae, Takeji

AU - Terunuma, Toshiyuki

AU - Isobe, Tomonori

AU - Kawamura, Hiraku

AU - Yasuoka, Kiyoshi

AU - Matsumoto, Tetsuro

AU - Harano, Hideki

AU - Nishiyama, Jun

AU - Masuda, Akihiko

AU - Nohtomi, Akihiro

PY - 2011/11/1

Y1 - 2011/11/1

N2 - In current radiotherapy, neutrons are produced in a photonuclear reaction when incident photon energy is higher than the threshold. In the present study, a method of discriminating the neutron component was investigated using an imaging plate (IP) in the neutron-gamma-ray mixed field. Two types of IP were used: a conventional IP for beta- and gamma rays, and an IP doped with Gd for detecting neutrons. IPs were irradiated in the mixed field, and the photo-stimulated luminescence (PSL) intensity of the thermal neutron component was discriminated using an expression proposed herein. The PSL intensity of the thermal neutron component was proportional to thermal neutron fluence. When additional irradiation of photons was added to constant neutron irradiation, the PSL intensity of the thermal neutron component was not affected. The uncertainty of PSL intensities was approximately 11.4 %. This method provides a simple and effective means of discriminating the neutron component in a mixed field.

AB - In current radiotherapy, neutrons are produced in a photonuclear reaction when incident photon energy is higher than the threshold. In the present study, a method of discriminating the neutron component was investigated using an imaging plate (IP) in the neutron-gamma-ray mixed field. Two types of IP were used: a conventional IP for beta- and gamma rays, and an IP doped with Gd for detecting neutrons. IPs were irradiated in the mixed field, and the photo-stimulated luminescence (PSL) intensity of the thermal neutron component was discriminated using an expression proposed herein. The PSL intensity of the thermal neutron component was proportional to thermal neutron fluence. When additional irradiation of photons was added to constant neutron irradiation, the PSL intensity of the thermal neutron component was not affected. The uncertainty of PSL intensities was approximately 11.4 %. This method provides a simple and effective means of discriminating the neutron component in a mixed field.

UR - http://www.scopus.com/inward/record.url?scp=81255169121&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=81255169121&partnerID=8YFLogxK

U2 - 10.1093/rpd/ncq493

DO - 10.1093/rpd/ncq493

M3 - Article

C2 - 21196463

AN - SCOPUS:81255169121

VL - 147

SP - 394

EP - 400

JO - Radiation Protection Dosimetry

JF - Radiation Protection Dosimetry

SN - 0144-8420

IS - 3

M1 - ncq493

ER -