ENTRY L0041 19970129 0000L004100000001 SUBENT L0041001 19970129 0000L004100100001 BIB 13 29 L004100100002 INSTITUTE (2GERJLU) L004100100003 REFERENCE (J,NIM,127,1,75) L004100100004 AUTHOR (U.KNEISSL,E.A.KOOP,G.KUHL,K.H.LEISTER,A.WELLER) L004100100005 TITLE The quasimonoenergetic photon facility at the Giessen L004100100006 65-MeV electron linear accelerator. L004100100007 FACILITY (LINAC,2GERJLU) L004100100008 INC-SOURCE (QMPH,ARAD) Positron annihilation in flight. L004100100009 A proton beam energy width obtained with a positron L004100100010 beam of DE/E = 1% was about 300 keV at 20 MeV and L004100100011 400 keV at 30 MeV. L004100100012 DETECTOR (STANK) NE323 500 l Gd-loaded (0.3%) 4pi liquid L004100100013 scintillator tank for neutron detection. L004100100014 NaI(Tl) crystal used to monitor photon intensity. L004100100015 Ge(Li) detector used for calibration of photon beam. L004100100016 MONITOR Detector efficiency determined using 252Cf spontaneous L004100100017 fission nu(bar) = 3.78+-0.02. L004100100018 METHOD (EXTB,STATD) Statistically determined neutron L004100100019 multiplicity. L004100100020 ANALYSIS At mean counting rates, the method of solving a system L004100100021 of quasilinear equations has been employed (see L004100100022 H.Beil, et al., Nuc.Instr.Meth.,67,293 (1969)) L004100100023 For higher counting rates, the moments method was L004100100024 applied (see B.I.Goryachev, At.En.,12,246 (1962)). L004100100025 ERR-ANALYS (DATA-ERR1) Statistical errors only. L004100100026 (DATA-ERR2) Estimated accuracy of about 10% for L004100100027 absolute calibration of the photon flux. L004100100028 STATUS Converted from Berman compilation. L004100100029 HISTORY (891206C) L004100100030 (950406A) BIB Updated L004100100031 ENDBIB 29 0 L004100100032 COMMON 1 3 L004100100033 DATA-ERR2 L004100100034 PER-CENT L004100100035 10. L004100100036 ENDCOMMON 3 0 L004100100037 ENDSUBENT 36 0 L004100199999 SUBENT L0041002 19970129 0000L004100200001 BIB 2 3 L004100200002 REACTION ((6-C-12(G,N)6-C-11,,SIG)+(6-C-12(G,N+P)5-B-10,,SIG)) L004100200003 Threshold of the reaction (gamma,n+p) is 27.4 MeV. L004100200004 SAMPLE Graphite target of 16.87 g/cm**2 L004100200005 ENDBIB 3 0 L004100200006 NOCOMMON 0 0 L004100200007 DATA 3 68 L004100200008 EN DATA DATA-ERR1 L004100200009 MEV MB MB L004100200010 19.029 0.15 0.182 L004100200011 19.306 0.32 0.178 L004100200012 19.675 0.29 0.159 L004100200013 20.044 0.49 0.172 L004100200014 20.340 1.16 0.171 L004100200015 20.635 2.62 0.174 L004100200016 20.727 2.28 0.170 L004100200017 21.041 3.35 0.175 L004100200018 21.189 4.10 0.174 L004100200019 21.337 4.27 0.218 L004100200020 21.540 5.46 0.210 L004100200021 21.650 6.28 0.255 L004100200022 21.743 6.87 0.200 L004100200023 21.890 7.16 0.215 L004100200024 21.983 7.62 0.223 L004100200025 22.057 7.82 0.219 L004100200026 22.130 7.53 0.223 L004100200027 22.204 7.57 0.217 L004100200028 22.278 7.85 0.222 L004100200029 22.352 7.56 0.190 L004100200030 22.555 7.89 0.221 L004100200031 22.647 8.14 0.222 L004100200032 22.740 8.35 0.194 L004100200033 22.906 8.29 0.211 L004100200034 23.053 8.31 0.190 L004100200035 23.201 8.47 0.210 L004100200036 23.367 8.73 0.192 L004100200037 23.552 8.54 0.211 L004100200038 23.737 7.78 0.192 L004100200039 23.921 7.53 0.207 L004100200040 24.069 6.79 0.196 L004100200041 24.217 6.09 0.204 L004100200042 24.364 5.50 0.196 L004100200043 24.567 4.45 0.194 L004100200044 24.752 4.94 0.194 L004100200045 24.900 4.80 0.190 L004100200046 25.066 4.51 0.189 L004100200047 25.214 4.98 0.191 L004100200048 25.361 5.31 0.175 L004100200049 25.472 5.48 0.188 L004100200050 25.564 5.32 0.189 L004100200051 25.675 5.05 0.190 L004100200052 25.767 4.85 0.170 L004100200053 25.915 4.50 0.189 L004100200054 26.063 4.68 0.164 L004100200055 26.210 4.25 0.165 L004100200056 26.358 4.57 0.161 L004100200057 26.561 3.77 0.164 L004100200058 26.764 3.57 0.158 L004100200059 26.931 3.09 0.161 L004100200060 27.097 3.09 0.159 L004100200061 27.244 2.97 0.161 L004100200062 27.374 3.21 0.157 L004100200063 27.466 2.70 0.163 L004100200064 27.761 3.17 0.156 L004100200065 27.909 2.14 0.160 L004100200066 28.075 3.18 0.156 L004100200067 28.352 1.58 0.143 L004100200068 28.666 2.14 0.147 L004100200069 29.072 2.50 0.146 L004100200070 29.663 2.88 0.148 L004100200071 30.069 3.56 0.147 L004100200072 30.383 2.86 0.149 L004100200073 30.660 2.81 0.150 L004100200074 31.066 2.62 0.152 L004100200075 31.380 3.05 0.152 L004100200076 31.657 2.34 0.150 L004100200077 32.063 2.26 0.150 L004100200078 ENDDATA 70 0 L004100200079 ENDSUBENT 78 0 L004100299999 SUBENT L0041003 19970129 0000L004100300001 BIB 3 10 L004100300002 REACTION ((8-O-16(G,N)8-O-15,,SIG)+ L004100300003 (8-O-16(G,N+P)7-N-14,,SIG)) L004100300004 The sum: (G,N)+(G,NP)+(G,2N)+(G,2N+P) measured. L004100300005 Thresholds of (gamma,n+p), (gamma,2n), and L004100300006 (gamma,2n+p) reactions are 23.0, 28.9, and 33.5 MeV. L004100300007 but (gamma,2n) and (gamma,2n+p) cross sections were L004100300008 measured to be consistent with zero within the L004100300009 experimental limits. L004100300010 SAMPLE Water target of 22.49 g/cm**2 L004100300011 HISTORY (950406A) REACTION corrected. L004100300012 ENDBIB 10 0 L004100300013 NOCOMMON 0 0 L004100300014 DATA 3 118 L004100300015 EN DATA DATA-ERR1 L004100300016 MEV MB MB L004100300017 17.036 0.07 0.196 L004100300018 17.128 1.20 0.194 L004100300019 17.202 1.60 0.199 L004100300020 17.368 0.67 0.193 L004100300021 17.534 0.33 0.193 L004100300022 17.700 0.12 0.175 L004100300023 17.866 0.00 0.171 L004100300024 18.032 -0.13 0.169 L004100300025 18.198 -0.09 0.166 L004100300026 18.365 0.28 0.166 L004100300027 18.531 0.09 0.164 L004100300028 18.697 0.35 0.162 L004100300029 18.863 0.53 0.167 L004100300030 19.048 0.86 0.164 L004100300031 19.214 0.68 0.164 L004100300032 19.380 1.14 0.165 L004100300033 19.546 0.98 0.162 L004100300034 19.712 0.38 0.161 L004100300035 19.878 0.16 0.160 L004100300036 20.044 0.36 0.195 L004100300037 20.211 0.37 0.201 L004100300038 20.321 0.31 0.195 L004100300039 20.543 1.14 0.192 L004100300040 20.690 1.62 0.180 L004100300041 20.875 2.16 0.178 L004100300042 21.041 2.02 0.178 L004100300043 21.207 1.78 0.173 L004100300044 21.374 2.39 0.167 L004100300045 21.540 3.32 0.168 L004100300046 21.632 3.93 0.206 L004100300047 21.706 6.79 0.176 L004100300048 21.872 6.95 0.178 L004100300049 22.038 7.84 0.164 L004100300050 22.204 8.73 0.181 L004100300051 22.370 7.64 0.177 L004100300052 22.444 6.43 0.203 L004100300053 22.537 5.16 0.172 L004100300054 22.703 5.38 0.175 L004100300055 22.813 5.65 0.197 L004100300056 22.869 5.91 0.178 L004100300057 23.053 5.50 0.172 L004100300058 23.220 5.41 0.173 L004100300059 23.386 5.60 0.174 L004100300060 23.552 6.22 0.174 L004100300061 23.718 6.32 0.175 L004100300062 23.884 6.83 0.174 L004100300063 23.977 7.95 0.176 L004100300064 24.050 8.10 0.156 L004100300065 24.217 7.83 0.153 L004100300066 24.383 7.62 0.156 L004100300067 24.549 7.16 0.152 L004100300068 24.715 6.48 0.151 L004100300069 24.918 5.80 0.181 L004100300070 25.047 5.92 0.175 L004100300071 25.140 6.23 0.177 L004100300072 25.250 6.44 0.173 L004100300073 25.509 5.71 0.174 L004100300074 25.749 5.33 0.166 L004100300075 26.007 5.08 0.168 L004100300076 26.247 5.29 0.167 L004100300077 26.506 4.83 0.167 L004100300078 26.746 4.59 0.167 L004100300079 26.894 4.32 0.177 L004100300080 27.004 4.82 0.166 L004100300081 27.244 4.42 0.166 L004100300082 27.503 3.95 0.166 L004100300083 27.743 4.02 0.167 L004100300084 28.001 3.53 0.166 L004100300085 28.241 3.40 0.167 L004100300086 28.500 3.51 0.167 L004100300087 28.758 3.32 0.150 L004100300088 28.998 3.04 0.154 L004100300089 29.257 2.60 0.154 L004100300090 29.497 2.90 0.155 L004100300091 29.571 2.74 0.156 L004100300092 29.755 2.96 0.158 L004100300093 29.995 2.61 0.157 L004100300094 30.254 2.77 0.143 L004100300095 30.494 3.00 0.150 L004100300096 30.623 2.39 0.150 L004100300097 30.752 2.78 0.150 L004100300098 30.992 2.41 0.152 L004100300099 31.251 2.48 0.155 L004100300100 31.509 2.22 0.156 L004100300101 31.749 2.36 0.159 L004100300102 32.008 2.13 0.160 L004100300103 32.100 1.93 0.162 L004100300104 32.248 2.02 0.162 L004100300105 32.506 1.61 0.163 L004100300106 32.599 1.66 0.165 L004100300107 32.746 2.34 0.169 L004100300108 33.005 2.28 0.171 L004100300109 33.245 2.02 0.172 L004100300110 33.503 1.82 0.173 L004100300111 33.744 2.29 0.178 L004100300112 34.002 1.98 0.179 L004100300113 34.242 1.96 0.182 L004100300114 34.408 1.97 0.180 L004100300115 34.501 2.36 0.187 L004100300116 34.648 2.86 0.187 L004100300117 34.759 2.25 0.189 L004100300118 34.907 2.87 0.190 L004100300119 34.999 2.25 0.192 L004100300120 35.091 2.15 0.188 L004100300121 35.258 1.65 0.192 L004100300122 35.405 2.20 0.192 L004100300123 35.498 1.93 0.196 L004100300124 35.645 2.20 0.194 L004100300125 35.904 2.26 0.197 L004100300126 35.996 2.23 0.203 L004100300127 36.107 2.58 0.202 L004100300128 36.255 2.18 0.206 L004100300129 36.402 2.49 0.204 L004100300130 36.495 1.98 0.207 L004100300131 36.642 2.11 0.206 L004100300132 36.753 1.67 0.209 L004100300133 36.901 1.80 0.208 L004100300134 36.993 1.66 0.211 L004100300135 ENDDATA 120 0 L004100300136 ENDSUBENT 135 0 L004100399999 ENDENTRY 3 0 L004199999999