The use of gadolinium for ESR dosimetry

Risultato della ricerca: Chapter

Abstract

The application of gadolinium to sensitize Electron Spin Resonance (ESR) dosimeters is reviewed. This nucleus is chosen because it has very good features in interacting with ionizing radiations. In particular, it has a very high capture cross section for thermal neutrons which favors the interactions of these particles within the detector; moreover, the charged secondary particles released after neutron interactions (mainly Auger and internal conversion electrons) are able to release their energy close the gadolinium site and, therefore, inside the sensitive volume of the detector. Consequently, the addition of gadolinium inside ESR dosimeters produces a significant enhancement of thermal neutron sensitivity. Furthermore, the presence of gadolinium can improve the sensitivity to photons because its high atomic number (Z_Gd=64) increases the effective cross photon section of the detectors. However, it must be taken into account for medical dosimetric application of Gd-added dosimeters that the tissue equivalence is heavily reduced. In this work, the response of ESR dosimeters added with gadolinium after irradiation to various radiation beams (such as 60Co gamma photons, thermal neutrons, protons) is described. Monte Carlo simulations able to theoretically model the effects of gadolinium on the ESR dosimeter sensitivity are reported along with the comparison of these computational results with the experimental ones.
Lingua originaleEnglish
Titolo della pubblicazione ospiteGoadolinium: Componds, Production and Applications
Pagine265-300
Numero di pagine35
Stato di pubblicazionePublished - 2010

Serie di pubblicazioni

NomeChemical Engineering Methods and Technology

Fingerprint

gadolinium
dosimeters
electron paramagnetic resonance
thermal neutrons
detectors
photons
sensitivity
internal conversion
ionizing radiation
absorption cross sections
equivalence
interactions
neutrons
irradiation
nuclei
protons
augmentation
electrons
simulation

Cita questo

Marrale, M., Longo, A., & Brai, M. (2010). The use of gadolinium for ESR dosimetry. In Goadolinium: Componds, Production and Applications (pagg. 265-300). (Chemical Engineering Methods and Technology).

The use of gadolinium for ESR dosimetry. / Marrale, Maurizio; Longo, Anna; Brai, Maria.

Goadolinium: Componds, Production and Applications. 2010. pag. 265-300 (Chemical Engineering Methods and Technology).

Risultato della ricerca: Chapter

Marrale, M, Longo, A & Brai, M 2010, The use of gadolinium for ESR dosimetry. in Goadolinium: Componds, Production and Applications. Chemical Engineering Methods and Technology, pagg. 265-300.
Marrale M, Longo A, Brai M. The use of gadolinium for ESR dosimetry. In Goadolinium: Componds, Production and Applications. 2010. pag. 265-300. (Chemical Engineering Methods and Technology).
Marrale, Maurizio ; Longo, Anna ; Brai, Maria. / The use of gadolinium for ESR dosimetry. Goadolinium: Componds, Production and Applications. 2010. pagg. 265-300 (Chemical Engineering Methods and Technology).
@inbook{46df9bb3358a40a39477ed7c0fc9e80d,
title = "The use of gadolinium for ESR dosimetry",
abstract = "The application of gadolinium to sensitize Electron Spin Resonance (ESR) dosimeters is reviewed. This nucleus is chosen because it has very good features in interacting with ionizing radiations. In particular, it has a very high capture cross section for thermal neutrons which favors the interactions of these particles within the detector; moreover, the charged secondary particles released after neutron interactions (mainly Auger and internal conversion electrons) are able to release their energy close the gadolinium site and, therefore, inside the sensitive volume of the detector. Consequently, the addition of gadolinium inside ESR dosimeters produces a significant enhancement of thermal neutron sensitivity. Furthermore, the presence of gadolinium can improve the sensitivity to photons because its high atomic number (Z_Gd=64) increases the effective cross photon section of the detectors. However, it must be taken into account for medical dosimetric application of Gd-added dosimeters that the tissue equivalence is heavily reduced. In this work, the response of ESR dosimeters added with gadolinium after irradiation to various radiation beams (such as 60Co gamma photons, thermal neutrons, protons) is described. Monte Carlo simulations able to theoretically model the effects of gadolinium on the ESR dosimeter sensitivity are reported along with the comparison of these computational results with the experimental ones.",
keywords = "ESR, dosimetry, gadolinium, organic compounds, photons, protons, yhermal neutrons",
author = "Maurizio Marrale and Anna Longo and Maria Brai",
year = "2010",
language = "English",
isbn = "978-1-61668-991-9",
series = "Chemical Engineering Methods and Technology",
pages = "265--300",
booktitle = "Goadolinium: Componds, Production and Applications",

}

TY - CHAP

T1 - The use of gadolinium for ESR dosimetry

AU - Marrale, Maurizio

AU - Longo, Anna

AU - Brai, Maria

PY - 2010

Y1 - 2010

N2 - The application of gadolinium to sensitize Electron Spin Resonance (ESR) dosimeters is reviewed. This nucleus is chosen because it has very good features in interacting with ionizing radiations. In particular, it has a very high capture cross section for thermal neutrons which favors the interactions of these particles within the detector; moreover, the charged secondary particles released after neutron interactions (mainly Auger and internal conversion electrons) are able to release their energy close the gadolinium site and, therefore, inside the sensitive volume of the detector. Consequently, the addition of gadolinium inside ESR dosimeters produces a significant enhancement of thermal neutron sensitivity. Furthermore, the presence of gadolinium can improve the sensitivity to photons because its high atomic number (Z_Gd=64) increases the effective cross photon section of the detectors. However, it must be taken into account for medical dosimetric application of Gd-added dosimeters that the tissue equivalence is heavily reduced. In this work, the response of ESR dosimeters added with gadolinium after irradiation to various radiation beams (such as 60Co gamma photons, thermal neutrons, protons) is described. Monte Carlo simulations able to theoretically model the effects of gadolinium on the ESR dosimeter sensitivity are reported along with the comparison of these computational results with the experimental ones.

AB - The application of gadolinium to sensitize Electron Spin Resonance (ESR) dosimeters is reviewed. This nucleus is chosen because it has very good features in interacting with ionizing radiations. In particular, it has a very high capture cross section for thermal neutrons which favors the interactions of these particles within the detector; moreover, the charged secondary particles released after neutron interactions (mainly Auger and internal conversion electrons) are able to release their energy close the gadolinium site and, therefore, inside the sensitive volume of the detector. Consequently, the addition of gadolinium inside ESR dosimeters produces a significant enhancement of thermal neutron sensitivity. Furthermore, the presence of gadolinium can improve the sensitivity to photons because its high atomic number (Z_Gd=64) increases the effective cross photon section of the detectors. However, it must be taken into account for medical dosimetric application of Gd-added dosimeters that the tissue equivalence is heavily reduced. In this work, the response of ESR dosimeters added with gadolinium after irradiation to various radiation beams (such as 60Co gamma photons, thermal neutrons, protons) is described. Monte Carlo simulations able to theoretically model the effects of gadolinium on the ESR dosimeter sensitivity are reported along with the comparison of these computational results with the experimental ones.

KW - ESR

KW - dosimetry

KW - gadolinium

KW - organic compounds

KW - photons

KW - protons

KW - yhermal neutrons

UR - http://hdl.handle.net/10447/55886

M3 - Chapter

SN - 978-1-61668-991-9

T3 - Chemical Engineering Methods and Technology

SP - 265

EP - 300

BT - Goadolinium: Componds, Production and Applications

ER -