ENTRY 23433 20180922 22722343300000001 SUBENT 23433001 20180922 22722343300100001 BIB 15 108 2343300100002 TITLE Measurement of neutron kerma factors for carbon and 2343300100003 A-150 plastic at neutron energies of 26.3 MeV and 2343300100004 37.8 MeV 2343300100005 AUTHOR (H.Schuhmacher, H.J.Brede, R.Henneck, A.Kunz, 2343300100006 J.P.Meulders, P.Pihet, U.J.Schrewe) 2343300100007 INSTITUTE (2GERPTB) H.Schuhmacher, H.J.Brede, U.J.Schrewe 2343300100008 (2SWTBAS) R.Henneck 2343300100009 (2GERSBU) A.Kunz, P.Pihet 2343300100010 (2BLGLVN) J.P.Meulders 2343300100011 REFERENCE (J,PMB,37,1265,1992) 2343300100012 MONITOR (1-H-1(N,EL)1-H-1,,SIG) For neutron fluence. 2343300100013 n-p CS of Fink+ were interpolated by phase shift 2343300100014 analysis of Arndt+ (see REL-REFs). 2343300100015 REL-REF (I,,R.Henneck+,J,NIM/A,259,329,1987) 2343300100016 Details of facility 2343300100017 (M,,H.G.Menzel+,J,PMB,29,1537,1984) 2343300100018 (M,,G.Buehler+,J,PMB,31,601,1986) 2343300100019 (M,,P.Pihet+,R,IAEA-TECDOC-506,91,1989) 2343300100020 (R,,R.A.Arndt+,J,PR/D,35,128,1987) 2343300100021 Nucleon-nucleon partial-wave analysis to 1100 MeV 2343300100022 (R,22207002,G.Fink+,J,NP/A,518,561,1990) 2343300100023 (M,,U.J.Schrewe+,J,NIM/A,299,226,1990) 2343300100024 TOF method details, PC-TOF measurement. 2343300100025 (N,,R.A.Cecil+,J,NIM,161,439,1979) 2343300100026 Monte Carlo code 2343300100027 (R,23434001,P.Pihet+,J,PMB,37,1957,1992) 2343300100028 (R,,R.S.Caswell+,J,RR,83,217,1980) 2343300100029 (R,,D.J.Brenner,J,PMB,29,437,1984) 2343300100030 Three refs. for data used in analysis. 2343300100031 FACILITY (CYCLO,2SWTPSI) 2343300100032 INC-SOURCE (P-BE) 2 mm thick 9Be target was bombarded by protons 2343300100033 Proton beam was measured by Faraday cup. 2343300100034 Proton beam current ~2muA, frequency ~ 12MHz. 2343300100035 For TOF measurement - 1MHz frequency, 2343300100036 current - 0.05 muA for NE213, 0.4muA for PC measurement2343300100037 Proton energies 31.9 and 43.3 MeV. 2343300100038 METHOD (TOF) TOF by NE213 scintillator and PCs to evaluate the2343300100039 kerma correction at lower neutron energy. 2343300100040 (PSD) Pulse shape technique to discriminate photon 2343300100041 induced events form neutron induced events at 2343300100042 neutron fluence measurement. 2343300100043 DETECTOR (PROPC) Low pressure proportional counters (PCS) with 2343300100044 walls made from of A-150 tissue substitute (TEPC) or 2343300100045 graphite (CPC), both 2.5mm thick, - to determine kerma.2343300100046 Filled with propane-based tissue equivalent(TE) gas at 2343300100047 4.5kPa pressure . 2343300100048 (TELES) Proton recoil telescope (PRT) - to determine 2343300100049 the neutron fluence. 2343300100050 Consist of: 2343300100051 - polyethylene radiator foil of 144,7mg/cm2 areal 2343300100052 density, mounted on 1.0mm Ta backing, 2343300100053 - two proportional counters, filled with isobutane at 2343300100054 50kPa pressure, 2343300100055 - two solid state detectors: 2343300100056 1) 1.0mm thick Si surface barrier detector at 27 MeV, 2343300100057 2.5mm thick one for 39 MeV, 2343300100058 2) 5.0mm thick Si(Li) detector. 2343300100059 (SCIN) NE102 scintillator (1mm thickness,75mm diameter)2343300100060 as an additional neutron beam monitor . 2343300100061 NE213 of 51mm diameter,51mm length and stilbene 2343300100062 detector of 25.4mm diameter, 25.4mm length - for 2343300100063 spectral neutron fluence measurement. 2343300100064 Monte Carlo code was used fro calibration. 2343300100065 CORRECTION At kerma measurement: 2343300100066 for attenuation and scattering by wall. 2343300100067 At neutron flux determination: 2343300100068 backgrounds ( measured), 2343300100069 influence of the PRT components, e.g. scattering on 2343300100070 apertures and other parts, simulated by Monte Carlo 2343300100071 code; 2343300100072 for deadtime loses, 2343300100073 inelastic proton scattering , 2343300100074 neutron fluence attenuation. 2343300100075 ANALYSIS Kerma factor kf=K/F, K=K0+K1+K2, 2343300100076 K-kinetic energy released in matter(kerma), 2343300100077 F- fluence measured; 2343300100078 kerma was determined from relation 2343300100079 K0/K=(1-K1/K)/(1+K2/K0) 2343300100080 tot - total, 2343300100081 0 - for neutrons of nominal energies from E2 to Emax, 2343300100082 1 - neutrons from 0 to E1, 2343300100083 2 - neutrons from E1 to E2 . 2343300100084 E1 = 10 MeV, 2343300100085 E2 = 20 MeV for 26.3 MeV neutrons, 2343300100086 32 MeV for 37.8 MeV neutrons. 2343300100087 K1/K was measured with PCS-TOF technique. 2343300100088 K2/K0 was calculated by measured fluences and kerma 2343300100089 factors from measurement of P.Pihet+ (in 14.9-20.MeV 2343300100090 region), extrapolated to lower energy using the data of2343300100091 R.S.Caswell+ and to higher energies - data of 2343300100092 D.J.Brenner+, normalized to the measured values at 2343300100093 20 MeV . 2343300100094 ERR-ANALYS (DATA-ERR) 2343300100095 Kerma uncertainty 3.9% for 27 MeV, 4.1% for 39 MeV for2343300100096 A-150, for carbon - 6.2% and 7.2%, respectively. 2343300100097 Uncertainty of neutron fluence(determined by PRT) 5.6% 2343300100098 resulting from: 2343300100099 hydrogen areal density of the radiator 0.4% 2343300100100 relative geometry of PRT 0.5% 2343300100101 differential n-p cross section 4.% 2343300100102 relative spectral neutron fluence 2.5% 2343300100103 correction factors ( see Table 2) 2343300100104 statistical uncertainty 1.5% 2343300100105 fit of the calculated spectra to the measured 1.8% 2343300100106 ADD-RES Kerma factor ratio for ICRU muscle tissue to A-150 was2343300100107 calculated on the basis of the measured kerma factor to2343300100108 be 0.93 . 2343300100109 HISTORY (20180922C) M.M. 2343300100110 ENDBIB 108 0 2343300100111 NOCOMMON 0 0 2343300100112 ENDSUBENT 111 0 2343300199999 SUBENT 23433002 20180922 22722343300200001 BIB 5 16 2343300200002 REACTION (6-C-12(N,TOT),,KER) Kerma factor 2343300200003 SAMPLE Graphite 2343300200004 MISC-COL (MISC1) K0/Q, pGy/nC 2343300200005 (MISC2) F0/Q, 1/(cm2 * nC) 2343300200006 REL-REF (A,,P.Pihet+,J,PMB,37,1957,1992) Exp.points 2343300200007 (A,,J.L.Romero+,C,85SANTA,,687,1985) 2343300200008 (D,,M.A.Behrooz+,J,PMB,26,507,1981) 2343300200009 (A,,D.J.Brenner,J,PMB,29,437,1984) 2343300200010 (D,,P.J.Dimbylow,J,PMB,25,637,1980) 2343300200011 (A,,P.J.Dimbylow,J,PMB,27,989,1982) 2343300200012 (A,,A.H.Wells,J,RR,80,1,1979) 2343300200013 (D,,R.S.Caswell+,J,RR,83,217,1980) 2343300200014 (D,,R.S.Caswell+,J,RPD,23,11,1988) 2343300200015 6 theor.curves 2343300200016 STATUS (TABLE) Table 4 of J.Phys.in Medicine and Biology,37, 2343300200017 1265,1992 2343300200018 ENDBIB 16 0 2343300200019 NOCOMMON 0 0 2343300200020 DATA 8 2 2343300200021 EN EN-ERR DATA DATA-ERR MISC1 MISC1-ERR 2343300200022 MISC2 MISC2-ERR 2343300200023 MEV MEV PGY*CM2 PGY*CM2 SEE TEXT SEE TEXT 2343300200024 SEE TEXT SEE TEXT 2343300200025 26.3 2.9 35.5 3.0 406. 26. 2343300200026 11.44 0.64 2343300200027 37.8 2.5 42.6 3.9 418. 30. 2343300200028 9.81 0.55 2343300200029 ENDDATA 8 0 2343300200030 ENDSUBENT 29 0 2343300299999 SUBENT 23433003 20180922 22722343300300001 BIB 4 6 2343300300002 REACTION (6-C-CMP(N,TOT),,KER) Kerma factor 2343300300003 SAMPLE A-150 plastic (76.8% - carbon) 2343300300004 MISC-COL (MISC1) K0/Q, pGy/nC 2343300300005 (MISC2) F0/Q, 1/(cm2 * nC) 2343300300006 STATUS (TABLE) Table 4 of J.Phys.in Medicine and Biology,37, 2343300300007 1265,1992 2343300300008 ENDBIB 6 0 2343300300009 NOCOMMON 0 0 2343300300010 DATA 8 2 2343300300011 EN EN-ERR DATA DATA-ERR MISC1 MISC1-ERR 2343300300012 MISC2 MISC2-ERR 2343300300013 MEV MEV PGY*CM2 PGY*CM2 SEE TEXT SEE TEXT 2343300300014 SEE TEXT SEE TEXT 2343300300015 26.3 2.9 75.6 5.4 865. 37. 2343300300016 11.4 0.64 2343300300017 37.8 2.5 79.0 5.6 775. 34. 2343300300018 9.81 0.55 2343300300019 ENDDATA 8 0 2343300300020 ENDSUBENT 19 0 2343300399999 SUBENT 23433004 20180922 22722343300400001 BIB 4 9 2343300400002 REACTION ((6-C-CMP(N,TOT),,KER)/(6-C-12(N,TOT),,KER)) 2343300400003 Ratio of kerma factors 2343300400004 SAMPLE Graphite, 2343300400005 A-150 plastic (76.8% - carbon) 2343300400006 COMMENT Of authors . 2343300400007 Ratio was determined with lower error than individual 2343300400008 kerma factors. 2343300400009 STATUS (TABLE) Text,page 1276 of J.Phys.in Medicine and 2343300400010 Biology,37,1265,1992 2343300400011 ENDBIB 9 0 2343300400012 NOCOMMON 0 0 2343300400013 DATA 4 2 2343300400014 EN EN-ERR DATA DATA-ERR 2343300400015 MEV MEV NO-DIM NO-DIM 2343300400016 26.3 2.9 2.17 0.13 2343300400017 37.8 2.5 1.91 0.11 2343300400018 ENDDATA 4 0 2343300400019 ENDSUBENT 18 0 2343300499999 SUBENT 23433005 20180921 22722343300500001 BIB 9 26 2343300500002 REACTION (6-C-12(N,TOT),,KER) Kerma factor 2343300500003 TITLE Determination of kerma factors for A-150 plastic and 2343300500004 carbon for neutron energies above 20 MeV 2343300500005 AUTHOR (U.J.Schrewe, H.J.Brede, R.Henneck, S.Gerdung, A.Kunz, 2343300500006 H.G.Menzel,J.P.Meulders,P.Pihet,H.Schuhmacher,I.Slypen)2343300500007 REFERENCE (C,91JUELIC,,586,1991) 2343300500008 SAMPLE Graphite 2343300500009 REL-REF (A,,P.Pihet+,J,PMB,37,1957,1992) Exp.points 2343300500010 Mentioned in Proc.of Conf.on Nucl.Data for Sci. 2343300500011 and Technol.,Juelich ,586,1991 as "to be published" 2343300500012 (D,,M.A.Behrooz+,J,PMB,26,507,1981) 2343300500013 (A,,D.J.Brenner,J,PMB,29,437,1984) 2343300500014 (A,,P.J.Dimbylow,J,PMB,25,637,1980) 2343300500015 (A,,A.H.Wells,J,RR,80,1,1979) 2343300500016 (D,,R.S.Caswell+,J,RR,83,217,1980) 2343300500017 (D,,R.S.Caswell+,J,RPD,23,11,1988) 2343300500018 6 theor.curves A-F on fig.2 of Proc.of Conf.on Nucl. 2343300500019 Data for Sci.and Technol.,Juelich ,586,1991 2343300500020 MISC-COL (MISC1) K0/Ktot 2343300500021 (MISC2) K0/Q, pGy/nC 2343300500022 (MISC3) F0/Q, 1/(cm2 * nC) 2343300500023 ERR-ANALYS (DATA-ERR) One standard deviation, no other information2343300500024 STATUS (TABLE) Table 1 of Proc.of Conf.on Nucl.Data for Sci. 2343300500025 and Technol.,Juelich ,p.586,1991 2343300500026 (SPSDD,23433002) Next different analysis in 23433 2343300500027 - K2/K0 determined by data of P.Pihet+ (not R.A.Cecil+)2343300500028 ENDBIB 26 0 2343300500029 NOCOMMON 0 0 2343300500030 DATA 10 2 2343300500031 EN EN-ERR DATA DATA-ERR MISC1 MISC1-ERR 2343300500032 MISC2 MISC2-ERR MISC3 MISC3-ERR 2343300500033 MEV MEV PGY*CM2 PGY*CM2 NO-DIM NO-DIM 2343300500034 SEE TEXT SEE TEXT SEE TEXT SEE TEXT 2343300500035 26.3 2.9 34.7 2.9 0.721 0.009 2343300500036 395. 24. 11.44 0.64 2343300500037 37.8 2.5 41.0 3.7 0.605 0.011 2343300500038 402. 29. 9.81 0.55 2343300500039 ENDDATA 8 0 2343300500040 ENDSUBENT 39 0 2343300599999 SUBENT 23433006 20180921 22722343300600001 BIB 9 25 2343300600002 REACTION (6-C-CMP(N,TOT),,KER) Kerma factor 2343300600003 TITLE Determination of kerma factors for A-150 plastic and 2343300600004 carbon for neutron energies above 20 MeV 2343300600005 AUTHOR (U.J.Schrewe, H.J.Brede, R.Henneck, S.Gerdung, A.Kunz, 2343300600006 H.G.Menzel,J.P.Meulders,P.Pihet,H.Schuhmacher,I.Slypen)2343300600007 REFERENCE (C,91JUELIC,,586,1991) 2343300600008 SAMPLE A-150 plastic (76.8% - carbon) 2343300600009 REL-REF (A,,P.Pihet+,J,PMB,37,1957,1992) Exp.points 2343300600010 Mentioned in Proc.of Conf.on Nucl.Data for Sci. 2343300600011 and Technol.,Juelich,586,1991 as "to be published" 2343300600012 (D,,M.A.Behrooz+,J,PMB,26,507,1981) 2343300600013 (A,,D.J.Brenner,J,PMB,29,437,1984) 2343300600014 (A,,P.J.Dimbylow,J,PMB,25,637,1980) 2343300600015 (A,,A.H.Wells,J,RR,80,1,1979) 2343300600016 (D,,R.S.Caswell+,J,RR,83,217,1980) 2343300600017 5 theor.curves A-E on fig.1 of Proc.of Conf.on Nucl. 2343300600018 Data for Sci.and Technol.,Juelich ,,586,1991 2343300600019 MISC-COL (MISC1) K0/Ktot 2343300600020 (MISC2) K0/Q, pGy/nC 2343300600021 (MISC3) F0/Q, 1/(cm2 * nC) 2343300600022 ERR-ANALYS (DATA-ERR) One standard deviation, no other information2343300600023 STATUS (TABLE) Table 1 of Proc.of Conf.on Nucl.Data for Sci. 2343300600024 and Technol.,Juelich ,p.586,1991 2343300600025 (SPSDD,23433003) Next different analysis in 23433 2343300600026 - K2/K0 determined by data of P.Pihet+ (not R.A.Cecil+)2343300600027 ENDBIB 25 0 2343300600028 NOCOMMON 0 0 2343300600029 DATA 10 2 2343300600030 EN EN-ERR DATA DATA-ERR MISC1 MISC1-ERR 2343300600031 MISC2 MISC2-ERR MISC3 MISC3-ERR 2343300600032 MEV MEV PGY*CM2 PGY*CM2 NO-DIM NO-DIM 2343300600033 SEE TEXT SEE TEXT SEE TEXT SEE TEXT 2343300600034 26.3 2.9 75.2 5.1 0.562 0.011 2343300600035 858. 33. 11.44 0.64 2343300600036 37.8 2.5 78.4 5.3 0.493 0.011 2343300600037 769. 31. 9.81 0.55 2343300600038 ENDDATA 8 0 2343300600039 ENDSUBENT 38 0 2343300699999 SUBENT 23433007 20180921 22722343300700001 BIB 8 14 2343300700002 REACTION ((6-C-CMP(N,TOT),,KER)/(6-C-12(N,TOT),,KER)) 2343300700003 TITLE Determination of kerma factors for A-150 plastic and 2343300700004 carbon for neutron energies above 20 MeV 2343300700005 AUTHOR (U.J.Schrewe, H.J.Brede, R.Henneck, S.Gerdung, A.Kunz, 2343300700006 H.G.Menzel,J.P.Meulders,P.Pihet,H.Schuhmacher,I.Slypen)2343300700007 REFERENCE (C,91JUELIC,,586,1991) 2343300700008 SAMPLE A-150 plastic (76.8% - carbon) 2343300700009 COMMENT Of authors . 2343300700010 Ratio was determined with lower error than individual 2343300700011 kerma factors. 2343300700012 ERR-ANALYS (DATA-ERR) One standard deviation, no other information2343300700013 STATUS (TABLE) Text,page 587 of Proc.of Conf.on Nucl.Data for 2343300700014 Sci.and Technol.,Juelich, p.586,1991 2343300700015 (SPSDD,23433004) Next analysis 2343300700016 ENDBIB 14 0 2343300700017 NOCOMMON 0 0 2343300700018 DATA 4 2 2343300700019 EN EN-ERR DATA DATA-ERR 2343300700020 MEV MEV NO-DIM NO-DIM 2343300700021 26.3 2.9 2.15 0.13 2343300700022 37.8 2.5 1.85 0.11 2343300700023 ENDDATA 4 0 2343300700024 ENDSUBENT 23 0 2343300799999 ENDENTRY 7 0 2343399999999