Journal Article

Measurements of Neutron Spectra at the Stanford Linear Accelerator Center

V. Vylet, J.C. Liu, S.H. Rokni and L-X. Thai

in Radiation Protection Dosimetry

Volume 70, issue 1-4, pages 425-428
Published in print April 1997 | ISSN: 0144-8420
Published online April 1997 | e-ISSN: 1742-3406 | DOI: http://dx.doi.org/10.1093/oxfordjournals.rpd.a031990
Measurements of Neutron Spectra at the Stanford Linear Accelerator Center

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The purpose of the present measurements was to determine neutron spectra outside the shielding of high energy electron accelerators, with a special emphasis on the high energy (>20 MeV) portion of the spectra. The spectrometer system used consists of a standard set of Bonner spheres augmented by a custom made 30.48 cm (12") sphere with a 1 cm inner layer of lead, which increases its response in the high energy region. The system was further complemented by a plastic scintillator used for the measurement of 11C activation. A pair of rem meters was also used: one standard Anderson-Braun, and one with an inner layer of lead which has an extended high energy response. Measured spectra and relevant dosimetric quantities outside shielding at three different electron energies are presented.

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Subjects: Nuclear Chemistry, Photochemistry, and Radiation

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