<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml">The paper presents a newly designed ionisation chambers containing boron, operated in the initial recombination regime. The chambers were either filled with BF3 or the chamber electrodes were covered with B4C. The chambers can be placed in paraffin moderators. The sensitivity of the chambers was investigated depending on gas pressure, moderator thickness and polarizing voltage. The results showed that it was possible to obtain nearly the same sensitivity of the chamber to H* (10) for photons and neutrons in restricted energy range, however further investigations are needed to make an optimum design. The examples of applications for dosimetric measurements in mixed radiation fields near medical linear accelerator and in the vicinity of high-energy proton accelerator are presented.</abstract>

The paper presents a newly designed ionisation chambers containing boron, operated in the initial recombination regime. The chambers were either filled with BF3 or the chamber electrodes were covered with B4C. The chambers can be placed in paraffin moderators. The sensitivity of the chambers was investigated depending on gas pressure, moderator thickness and polarizing voltage. The results showed that it was possible to obtain nearly the same sensitivity of the chamber to H* (10) for photons and neutrons in restricted energy range, however further investigations are needed to make an optimum design. The examples of applications for dosimetric measurements in mixed radiation fields near medical linear accelerator and in the vicinity of high-energy proton accelerator are presented.

Ionisation Chambers Containing Boron as Neutron Detectors in Mixed Radiation Fields

Institute of Atomic Energy, PL 05-400 Otwock-Świerk, Poland

Polish Journal of Medical Physics and Engineering

The paper presents a newly designed ionisation chambers containing boron, operated in the initial recombination regime. The chambers were either filled with...

Ionisation Chambers Containing Boron as Neutron Detectors in Mixed Radiation Fields

Publié en ligne: 30 déc. 2008

Pages: 79 - 91

DOI: https://doi.org/10.2478/v10013-007-0007-4

Mots clés
recombination chambers, neutron dosimetry, boron

This content is open access.

Ionisation Chambers Containing Boron as Neutron Detectors in Mixed Radiation Fields

Publié en ligne: 30 déc. 2008

Pages: 79 - 91

DOI: https://doi.org/10.2478/v10013-007-0007-4

Mots clésrecombination chambers, neutron dosimetry, boron

This content is open access.

Mots clés
recombination chambers, neutron dosimetry, boron