caa a22 4500 397503954 CHVBK 20180308164539.0 cr unu---uuuuu 161202e19950801xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082799 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082799 Neutron W Values in Methane-Based Tissue Equivalent Gas up to 60 MeV [Elektronische Daten] [G.C. Taylor, J.T.M. Jansen, J. Zoetelief, H. Schuhmacher] The determination of reliable neutron W values for a dosimetrically important medium such as methane-based tissue-equivalent gas relies on knowing the W values of the charged particles produced by the neutron interactions in that medium. Following the recent evaluation of proton W values in methane-based tissue-equivalent gas by Siebert et al, it was thought appropriate to perform a similar re-evaluation for other significant secondary charged particles, namely 4He, 12C, 14N and 16O. This would allow the calculation of neutron W values with a completely revised set of data. The re-evaluation shows evidence of a 'bump' in the 4He W value curve at (200 keV.amu-1 similar to that reported for protons, but not for 12C, 14N or 16O ions. It also highlights the almost complete absence of experimental data above 60 keV.amu-1 for heavy recoils. Determination of neutron W values has shown a small increase below (1 MeV, and a small decrease above (8 MeV, when compared to the values reported by Siebert et al. Furthermore, neutron W values have been calculated for energies up to 60 MeV for the first time. Radiation Protection Dosimetry Taylor G.C. aut Jansen J.T.M. aut Zoetelief J. aut Schuhmacher H. aut Radiation Protection Dosimetry Oxford University Press 61/1-3(1995-08-01), 285-290 0144-8420 61:1-3<285 1995 61 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082799 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082799 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Taylor G.C. aut NATIONALLICENCE 700 1- Jansen J.T.M. aut NATIONALLICENCE 700 1- Zoetelief J. aut NATIONALLICENCE 700 1- Schuhmacher H. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 61/1-3(1995-08-01), 285-290 0144-8420 61:1-3<285 1995 61 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