caa a22 4500 397504853 CHVBK 20180308164541.0 cr unu---uuuuu 161202e19950501xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082659 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082659 Effect of Phantom Size and Composition on Neutron Dosemeter Reading [Elektronische Daten] [J.C. McDonald, J.E. Tanner, R.D. Stewart, R. Michel, M.K. Murphy, R.J. Traub] Unmoderated and D2O-moderated 252Cf neutron sources were used to irradiate several types of personal neutron dosemeters. The dosemeters were irradiated on polymethylmethacrylate (PMMA) phantoms with frontal dimensions of 40 x 40 cm2 and 30 x 30 cm2; both phantoms were 15 cm thick. Monte Carlo computer calculations of the neutron spectra and the ratios of dose equivalents at the surfaces of these phantoms were performed using the MCNP computer code. Additional calculations were performed for a 241Am-Be neutron source and for phantoms composed of International Commission on Radiation Units and Measurements (ICRU) tissue and of water; the water phantom used the design specified recently by the International Organisation for Standardisation. The calculations indicated negligible differences in the effects that either of the PMMA phantoms produced on the neutron energy spectra studied. However, the dose equivalent at the surface of the 30 x 30 x 15 cm3 PMMA phantom differed from the dose equivalents at the surfaces of the water phantom and the ICRU tissue phantom by about 4%. Dosemeters irradiated on the two different sized PMMA phantoms, using unmoderated and D2O moderated 252Cf neutron sources, gave nearly identical readings. All of the phantoms had similar effects on the neutron spectra, producing additional low energy neutrons. It was concluded that either size of PMMA phantom could be used for the irradiations required by the US dosimetry accreditation programmes. Radiation Protection Dosimetry McDonald J.C. aut Tanner J.E. aut Stewart R.D. aut Michel R. aut Murphy M.K. aut Traub R.J. aut Radiation Protection Dosimetry Oxford University Press 59/4(1995-05-01), 263-268 0144-8420 59:4<263 1995 59 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082659 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082659 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- McDonald J.C. aut NATIONALLICENCE 700 1- Tanner J.E. aut NATIONALLICENCE 700 1- Stewart R.D. aut NATIONALLICENCE 700 1- Michel R. aut NATIONALLICENCE 700 1- Murphy M.K. aut NATIONALLICENCE 700 1- Traub R.J. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 59/4(1995-05-01), 263-268 0144-8420 59:4<263 1995 59 rpd Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford