Twin ionisation chambers for dose determinations in phantom in an epithermal neutron beam

Antti Kosunen, Mika Kortesniemi, Hanna Ylä-Mella, Tiina Seppälä, Johanna Lampinen, Tom Seren, Iiro Auterinen, Hannu Järvinen, Sauli Savolainen

    Research output: Contribution to journalArticleScientificpeer-review

    34 Citations (Scopus)

    Abstract

    The validity of the twin ionisation chamber technique for determination of gamma and neutron doses in an epithermal neutron beam has been studied by comparison of measured and calculated dose distributions in a water phantom. The measurements were performed in two epithermal neutron beams, designed for boron neutron capture therapy, at the FiR 1 TRIGA nuclear reactor using two pairs of A150 tissue-equivalent and non-hydrogenous Mg(Ar) ionisation chambers. Doses were calculated by the two-dimensional discrete ordinates radiation transport code applying the fluence-to-dose conversion factors by ICRU. At the dose maximum in the phantom 5% consistency between measured and calculated results was achieved for both neutron and gamma doses. Improvements in chamber materials and precise knowledge of the fluence perturbation effects of the chambers are needed to decrease the measurement uncertainty to an acceptable level.
    Original languageEnglish
    Pages (from-to)187-194
    Number of pages8
    JournalRadiation Protection Dosimetry
    Volume81
    Issue number3
    DOIs
    Publication statusPublished - 1999
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    neutron beams
    Neutrons
    ionization chambers
    dosage
    Boron Neutron Capture Therapy
    Nuclear Reactors
    neutrons
    fluence
    chambers
    Uncertainty
    radiation transport
    nuclear reactors
    Radiation
    Water
    therapy
    boron
    perturbation
    water

    Cite this

    Kosunen, A., Kortesniemi, M., Ylä-Mella, H., Seppälä, T., Lampinen, J., Seren, T., ... Savolainen, S. (1999). Twin ionisation chambers for dose determinations in phantom in an epithermal neutron beam. Radiation Protection Dosimetry, 81(3), 187-194. https://doi.org/10.1093/oxfordjournals.rpd.a032585
    Kosunen, Antti ; Kortesniemi, Mika ; Ylä-Mella, Hanna ; Seppälä, Tiina ; Lampinen, Johanna ; Seren, Tom ; Auterinen, Iiro ; Järvinen, Hannu ; Savolainen, Sauli. / Twin ionisation chambers for dose determinations in phantom in an epithermal neutron beam. In: Radiation Protection Dosimetry. 1999 ; Vol. 81, No. 3. pp. 187-194.
    @article{b4b09e30bd7a4c47b24b3da8f15abc69,
    title = "Twin ionisation chambers for dose determinations in phantom in an epithermal neutron beam",
    abstract = "The validity of the twin ionisation chamber technique for determination of gamma and neutron doses in an epithermal neutron beam has been studied by comparison of measured and calculated dose distributions in a water phantom. The measurements were performed in two epithermal neutron beams, designed for boron neutron capture therapy, at the FiR 1 TRIGA nuclear reactor using two pairs of A150 tissue-equivalent and non-hydrogenous Mg(Ar) ionisation chambers. Doses were calculated by the two-dimensional discrete ordinates radiation transport code applying the fluence-to-dose conversion factors by ICRU. At the dose maximum in the phantom 5{\%} consistency between measured and calculated results was achieved for both neutron and gamma doses. Improvements in chamber materials and precise knowledge of the fluence perturbation effects of the chambers are needed to decrease the measurement uncertainty to an acceptable level.",
    author = "Antti Kosunen and Mika Kortesniemi and Hanna Yl{\"a}-Mella and Tiina Sepp{\"a}l{\"a} and Johanna Lampinen and Tom Seren and Iiro Auterinen and Hannu J{\"a}rvinen and Sauli Savolainen",
    year = "1999",
    doi = "10.1093/oxfordjournals.rpd.a032585",
    language = "English",
    volume = "81",
    pages = "187--194",
    journal = "Radiation Protection Dosimetry",
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    Kosunen, A, Kortesniemi, M, Ylä-Mella, H, Seppälä, T, Lampinen, J, Seren, T, Auterinen, I, Järvinen, H & Savolainen, S 1999, 'Twin ionisation chambers for dose determinations in phantom in an epithermal neutron beam', Radiation Protection Dosimetry, vol. 81, no. 3, pp. 187-194. https://doi.org/10.1093/oxfordjournals.rpd.a032585

    Twin ionisation chambers for dose determinations in phantom in an epithermal neutron beam. / Kosunen, Antti; Kortesniemi, Mika; Ylä-Mella, Hanna; Seppälä, Tiina; Lampinen, Johanna; Seren, Tom; Auterinen, Iiro; Järvinen, Hannu; Savolainen, Sauli.

    In: Radiation Protection Dosimetry, Vol. 81, No. 3, 1999, p. 187-194.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Twin ionisation chambers for dose determinations in phantom in an epithermal neutron beam

    AU - Kosunen, Antti

    AU - Kortesniemi, Mika

    AU - Ylä-Mella, Hanna

    AU - Seppälä, Tiina

    AU - Lampinen, Johanna

    AU - Seren, Tom

    AU - Auterinen, Iiro

    AU - Järvinen, Hannu

    AU - Savolainen, Sauli

    PY - 1999

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    N2 - The validity of the twin ionisation chamber technique for determination of gamma and neutron doses in an epithermal neutron beam has been studied by comparison of measured and calculated dose distributions in a water phantom. The measurements were performed in two epithermal neutron beams, designed for boron neutron capture therapy, at the FiR 1 TRIGA nuclear reactor using two pairs of A150 tissue-equivalent and non-hydrogenous Mg(Ar) ionisation chambers. Doses were calculated by the two-dimensional discrete ordinates radiation transport code applying the fluence-to-dose conversion factors by ICRU. At the dose maximum in the phantom 5% consistency between measured and calculated results was achieved for both neutron and gamma doses. Improvements in chamber materials and precise knowledge of the fluence perturbation effects of the chambers are needed to decrease the measurement uncertainty to an acceptable level.

    AB - The validity of the twin ionisation chamber technique for determination of gamma and neutron doses in an epithermal neutron beam has been studied by comparison of measured and calculated dose distributions in a water phantom. The measurements were performed in two epithermal neutron beams, designed for boron neutron capture therapy, at the FiR 1 TRIGA nuclear reactor using two pairs of A150 tissue-equivalent and non-hydrogenous Mg(Ar) ionisation chambers. Doses were calculated by the two-dimensional discrete ordinates radiation transport code applying the fluence-to-dose conversion factors by ICRU. At the dose maximum in the phantom 5% consistency between measured and calculated results was achieved for both neutron and gamma doses. Improvements in chamber materials and precise knowledge of the fluence perturbation effects of the chambers are needed to decrease the measurement uncertainty to an acceptable level.

    U2 - 10.1093/oxfordjournals.rpd.a032585

    DO - 10.1093/oxfordjournals.rpd.a032585

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    JO - Radiation Protection Dosimetry

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    ER -