ENTRY 23240 20170827 22652324000000001 SUBENT 23240001 20170827 22652324000100001 BIB 12 56 2324000100002 TITLE Beta-delayed neutron emission following the decay of 2324000100003 17-N 2324000100004 AUTHOR (H.Ohm,W.Rudolph,K.-L.Kratz) 2324000100005 INSTITUTE (2GERMNZ) 2324000100006 REFERENCE (J,NP/A,274,45,1976) 2324000100007 REL-REF (M,,K.-L.Kratz,S,INDC(NDS)-107,103,1979) - Review 2324000100008 of delayed neutron energy spectra; High-resolution He-32324000100009 spectrometer description. 2324000100010 FACILITY (REAC,2GERMNZ) 2324000100011 METHOD N-17 activity was produced in the Li-6(n,a)H-3 and 2324000100012 O-18(t,a)N-17 reactions at Mainz TRIGA reactor using 2324000100013 enriched (Li-6)2(C)(O-18)3 (Li-6 >95%, O-18 83.4%). 2324000100014 Irradiation was performed in a fast pneumatic tube 2324000100015 system using samples of 75 mg . 2324000100016 Counting was started 0.3 sec after irradiation. 2324000100017 Background - 7 counts/min. 2324000100018 Neutron decay curves were recorded with 100 channel 2324000100019 analyzer. 2324000100020 Energy shifts were determined to lie within the 2324000100021 standard deviations of electronic system of +-0.2 keV 2324000100022 over the energy range 0-2 MeV. 2324000100023 (PHD) 85 measurements were done to improve counting 2324000100024 statistics. Exp.PHD on Fig.2A of NP/A,274,45,1976. 2324000100025 DETECTOR (HE3SP) High-resolution He-3 spectrometer - eight He-3 2324000100026 proportional counters in circular block of paraffin- 2324000100027 to measure N-17 neutron decay curve. 2324000100028 Dead time 10 microsec. 2324000100029 (IOCH) Two identical He-3 ionization chambers with 2324000100030 He-3+Ar at 10 atm; resolution 12 keV for thermal, 2324000100031 22 keV for 1.0 MeV neutrons - to measure delayed 2324000100032 neutron spectrum. 2324000100033 Detectors resolutions,response functions, efficiencies2324000100034 were measured with monoenergetic neutrons generated by 2324000100035 Li-7(p,n)Be-7 for neutron energy range 0.019-2.7 MeV. 2324000100036 Absolute calibration accuracy about 0.1% for incident 2324000100037 neutron energy, about 3.5 % for relative efficiency. 2324000100038 CORRECTION For detector efficiency and thermal neutrons. 2324000100039 DECAY-DATA (7-N-17,4.174SEC) 4.174+-0.004 sec. 2324000100040 ADD-RES (DECAY) Half-life of 4.174+-0.004 sec was obtained from2324000100041 analysis of N-17 decay curve. 2324000100042 Level energies, neutron widths of neutron emitting 2324000100043 states in O-17 (Table 2 of NP/A,274,45,1976), 2324000100044 intensities of neutron branch from O-17 levels 2324000100045 (Abstract of NP/A,274,45,1976) 2324000100046 Elvl,keV Intensity, % Width, keV 2324000100047 4549.3+-1.3 34.8+-2.6 54.8+-0.4 2324000100048 5081.+-21. 0.6+-0.4 113.+-55. 2324000100049 5387.1+-1.2 52.7+-3.5 63.2+-1.1 2324000100050 5949.9+-1.9 7.0+-0.5 60.5+-3.2 2324000100051 Absolute intensities normalized to Pn=(95+-1)% from 2324000100052 J.Tomlinson, At.Data and Nucl.Data Tables,12,179,1973. 2324000100053 Table 3 - Absolute intensities and log ft values. 2324000100054 Table 4 - Exp. asymmetry in mirror decays of the 2324000100055 mass-17 system. 2324000100056 HISTORY (20150520C) M.M. 2324000100057 (20170827U) SD: REL-REF was added. 2324000100058 ENDBIB 56 0 2324000100059 NOCOMMON 0 0 2324000100060 ENDSUBENT 59 0 2324000199999 SUBENT 23240002 20150320 22442324000200001 BIB 6 13 2324000200002 REACTION (7-N-17(0,B-)8-O-17,,PN/DE,,REL) 2324000200003 Relative intensities of beta-delayed neutrons in % of 2324000200004 sum for four energies - at peaks of spectrum. 2324000200005 EN-SEC (E,N) Energy of delayed neutrons. 2324000200006 ANALYSIS Energies of peaks, their FWHM and relative intensities 2324000200007 were determined by codes SAMPO and GSE (see REL-REF). 2324000200008 REL-REF (N,,J.T.Routti+,J,NIM,72,125,1969) 2324000200009 SAMPO code. 2324000200010 GSE code - G.Wirth,K.Suemmerer,H.Otto,Program Library,2324000200011 Institute fuer Kernchemie, Universitaet Mainz, 1975. 2324000200012 ERR-ANALYS (DATA-ERR) Not specified. 2324000200013 STATUS (TABLE) Table 1 of J,NP/A,274,45,1976 2324000200014 (DEP,23240003) Neutron spectrum in Subent 003. 2324000200015 ENDBIB 13 0 2324000200016 NOCOMMON 0 0 2324000200017 DATA 4 4 2324000200018 E E-ERR DATA DATA-ERR 2324000200019 KEV KEV ARB-UNITS ARB-UNITS 2324000200020 382.8 0.9 36.6 2.6 2324000200021 884. 21. 0.6 0.4 2324000200022 1170.9 0.8 55.5 3.5 2324000200023 1700.3 1.7 7.4 0.5 2324000200024 ENDDATA 6 0 2324000200025 ENDSUBENT 24 0 2324000299999 SUBENT 23240003 20150320 22442324000300001 BIB 5 18 2324000300002 REACTION (7-N-17(0,B-)8-O-17,,PN/DE,,REL) 2324000300003 Neutron spectrum after corrections. 2324000300004 Relative intensities . 2324000300005 ERR-ANALYS (E-ERR-DIG) Digitizing error for energy scale 2324000300006 (ERR-DIG) Digitizing error for DATA scale 2324000300007 Quantization error ( one pixel): 2324000300008 scale X - 1.24 keV, 2324000300009 scale Y - 1.59 ARB-UNITS . 2324000300010 REL-REF (O,,H.Franz+,J,NIM,144,253,1977) 2324000300011 Spectrum is given in lin-log scales on Fig.6 . 2324000300012 (O,,K.Kratz,R,INDC(NDS)-107,103,1979) 2324000300013 Spectrum is given in lin-log scales on Fig.14 . 2324000300014 STATUS (CURVE) Fig.2 of J,NP/A,274,45,1976 2324000300015 COMMENT Of compiler. 2324000300016 - Negative values of neutron energies are due to 2324000300017 some energy shift in X scale on Fig.2A; 2324000300018 - X scale ( neutron energy) was digitized from Fig.2A, 2324000300019 data - from Fig 2B. 2324000300020 ENDBIB 18 0 2324000300021 COMMON 2 3 2324000300022 E-ERR-DIG ERR-DIG 2324000300023 KEV ARB-UNITS 2324000300024 1.01 6.66 2324000300025 ENDCOMMON 3 0 2324000300026 DATA 3 203 2324000300027 E-MIN E-MAX DATA 2324000300028 KEV KEV ARB-UNITS 2324000300029 -59.27 -47.52 9.27 2324000300030 -47.52 -38.25 17.17 2324000300031 -38.25 -23.41 18.73 2324000300032 -23.41 -14.74 26.63 2324000300033 -14.74 -7.93 36.11 2324000300034 -7.93 0.12 46.39 2324000300035 0.12 16.21 57.46 2324000300036 16.21 22.40 69.31 2324000300037 22.40 32.30 78.01 2324000300038 32.30 39.73 88.28 2324000300039 39.73 47.16 96.19 2324000300040 47.16 55.20 103.30 2324000300041 55.20 66.95 116.74 2324000300042 66.95 73.76 108.81 2324000300043 73.76 81.18 125.42 2324000300044 81.18 87.98 115.12 2324000300045 87.98 94.79 129.35 2324000300046 94.79 104.08 134.09 2324000300047 104.08 112.75 148.32 2324000300048 112.75 123.27 153.85 2324000300049 123.27 129.46 176.80 2324000300050 129.46 135.64 162.53 2324000300051 135.64 141.21 180.74 2324000300052 141.21 146.76 164.89 2324000300053 146.76 160.98 167.42 2324000300054 160.98 168.43 179.10 2324000300055 168.43 178.35 205.21 2324000300056 178.35 191.96 221.03 2324000300057 191.96 201.22 228.13 2324000300058 201.22 206.79 204.37 2324000300059 206.79 215.49 236.81 2324000300060 215.49 221.67 278.77 2324000300061 221.67 231.57 243.12 2324000300062 231.57 238.41 282.69 2324000300063 238.41 246.47 322.27 2324000300064 246.47 263.16 328.58 2324000300065 263.16 271.20 320.64 2324000300066 271.20 279.26 328.54 2324000300067 279.26 286.71 366.53 2324000300068 286.71 296.01 388.68 2324000300069 296.01 312.73 420.34 2324000300070 312.73 320.18 439.31 2324000300071 320.18 327.04 467.80 2324000300072 327.04 334.52 544.59 2324000300073 334.52 343.87 569.91 2324000300074 343.87 351.38 692.62 2324000300075 351.38 357.73 733.78 2324000300076 357.73 365.96 999.81 2324000300077 365.96 374.63 1060.75 2324000300078 374.63 382.60 1030.65 2324000300079 382.60 391.14 951.45 2324000300080 391.14 400.87 812.88 2324000300081 400.87 408.71 673.51 2324000300082 408.71 415.36 461.31 2324000300083 415.36 423.93 397.95 2324000300084 423.93 433.12 316.38 2324000300085 433.12 441.10 247.48 2324000300086 441.10 447.25 215.80 2324000300087 447.25 456.49 184.12 2324000300088 456.49 463.88 162.72 2324000300089 463.88 478.69 131.83 2324000300090 478.69 487.96 124.67 2324000300091 487.96 496.60 118.33 2324000300092 496.60 505.25 93.76 2324000300093 505.25 511.43 110.38 2324000300094 511.43 531.82 92.14 2324000300095 531.82 544.80 96.07 2324000300096 544.80 552.21 84.97 2324000300097 552.21 561.47 77.03 2324000300098 561.47 568.89 61.18 2324000300099 568.89 575.07 84.13 2324000300100 575.07 586.19 70.65 2324000300101 586.19 593.61 61.14 2324000300102 593.61 599.79 72.21 2324000300103 599.79 623.89 56.35 2324000300104 623.89 659.75 65.00 2324000300105 659.75 673.96 58.62 2324000300106 673.96 681.38 49.10 2324000300107 681.38 688.19 66.51 2324000300108 688.19 693.74 53.83 2324000300109 693.74 706.11 45.89 2324000300110 706.11 713.52 64.88 2324000300111 713.52 720.32 37.94 2324000300112 720.32 729.60 64.06 2324000300113 729.60 738.26 49.00 2324000300114 738.26 745.68 62.44 2324000300115 745.68 758.65 56.88 2324000300116 758.65 769.16 41.02 2324000300117 769.16 786.49 54.46 2324000300118 786.49 792.67 73.44 2324000300119 792.67 800.70 53.63 2324000300120 800.70 815.54 68.66 2324000300121 815.54 822.96 57.55 2324000300122 822.96 828.52 71.79 2324000300123 828.52 834.70 52.78 2324000300124 834.70 850.17 70.97 2324000300125 850.17 858.83 76.49 2324000300126 858.83 865.64 83.60 2324000300127 865.64 873.05 95.46 2324000300128 873.05 879.22 66.15 2324000300129 879.22 889.75 76.43 2324000300130 889.75 897.15 87.50 2324000300131 897.15 905.19 60.57 2324000300132 905.19 910.15 93.81 2324000300133 910.15 921.26 68.46 2324000300134 921.26 927.46 78.73 2324000300135 927.46 936.11 85.05 2324000300136 936.11 951.55 73.95 2324000300137 951.55 960.82 54.13 2324000300138 960.82 967.62 75.49 2324000300139 967.62 977.51 56.48 2324000300140 977.51 985.56 70.71 2324000300141 985.56 995.47 95.24 2324000300142 995.47 1001.60 84.14 2324000300143 1001.60 1009.05 71.46 2324000300144 1009.05 1014.60 91.24 2324000300145 1014.60 1024.55 109.44 2324000300146 1024.55 1047.40 115.75 2324000300147 1047.40 1056.70 105.42 2324000300148 1056.70 1065.40 129.16 2324000300149 1065.40 1074.05 140.23 2324000300150 1074.05 1081.50 195.64 2324000300151 1081.50 1089.55 185.33 2324000300152 1089.55 1097.65 219.36 2324000300153 1097.65 1105.75 289.02 2324000300154 1105.75 1114.50 327.80 2324000300155 1114.50 1121.95 406.17 2324000300156 1121.95 1128.85 479.79 2324000300157 1128.85 1138.35 562.91 2324000300158 1138.35 1147.25 836.84 2324000300159 1147.25 1154.85 1031.60 2324000300160 1154.85 1163.65 1174.90 2324000300161 1163.65 1169.95 1313.45 2324000300162 1169.95 1180.30 1336.40 2324000300163 1180.30 1185.00 1044.20 2324000300164 1185.00 1194.75 921.47 2324000300165 1194.75 1200.00 705.11 2324000300166 1200.00 1208.65 578.61 2324000300167 1208.65 1217.10 485.97 2324000300168 1217.10 1224.40 314.93 2324000300169 1224.40 1232.45 306.21 2324000300170 1232.45 1241.05 242.06 2324000300171 1241.05 1248.45 227.79 2324000300172 1248.45 1257.05 170.77 2324000300173 1257.05 1264.40 145.42 2324000300174 1264.40 1278.65 115.31 2324000300175 1278.65 1288.50 109.75 2324000300176 1288.50 1297.20 107.36 2324000300177 1297.20 1304.55 101.79 2324000300178 1304.55 1312.55 79.61 2324000300179 1312.55 1319.40 58.22 2324000300180 1319.40 1329.25 66.12 2324000300181 1329.25 1336.05 70.86 2324000300182 1336.05 1341.60 51.85 2324000300183 1341.60 1352.10 58.96 2324000300184 1352.10 1374.95 43.09 2324000300185 1374.95 1382.45 53.35 2324000300186 1382.45 1389.20 32.76 2324000300187 1389.20 1401.55 27.20 2324000300188 1401.55 1409.00 36.68 2324000300189 1409.00 1415.15 28.75 2324000300190 1415.15 1426.90 41.40 2324000300191 1426.90 1439.30 32.67 2324000300192 1439.30 1446.70 26.32 2324000300193 1446.70 1455.30 12.05 2324000300194 1455.30 1465.20 42.91 2324000300195 1465.20 1473.90 36.56 2324000300196 1473.90 1493.70 26.24 2324000300197 1493.70 1501.70 41.26 2324000300198 1501.70 1514.05 30.16 2324000300199 1514.05 1521.50 38.85 2324000300200 1521.50 1551.15 25.36 2324000300201 1551.15 1566.60 33.23 2324000300202 1566.60 1581.40 29.24 2324000300203 1581.40 1593.20 25.26 2324000300204 1593.20 1602.50 43.45 2324000300205 1602.50 1611.75 33.14 2324000300206 1611.75 1624.10 37.08 2324000300207 1624.10 1632.80 41.81 2324000300208 1632.80 1640.85 56.05 2324000300209 1640.85 1647.05 93.25 2324000300210 1647.05 1655.70 77.40 2324000300211 1655.70 1665.00 102.72 2324000300212 1665.00 1671.80 127.25 2324000300213 1671.80 1681.70 110.61 2324000300214 1681.70 1689.75 154.14 2324000300215 1689.75 1696.60 176.30 2324000300216 1696.60 1704.65 215.08 2324000300217 1704.65 1712.65 177.06 2324000300218 1712.65 1720.65 137.45 2324000300219 1720.65 1728.05 120.02 2324000300220 1728.05 1736.05 87.54 2324000300221 1736.05 1744.70 70.11 2324000300222 1744.70 1768.80 42.37 2324000300223 1768.80 1790.40 24.91 2324000300224 1790.40 1800.90 16.96 2324000300225 1800.90 1808.30 6.65 2324000300226 1808.30 1815.70 25.64 2324000300227 1815.70 1827.45 12.95 2324000300228 1827.45 1850.95 6.60 2324000300229 1850.95 1886.80 8.90 2324000300230 1886.80 1910.30 6.48 2324000300231 1910.30 1930.10 4.85 2324000300232 ENDDATA 205 0 2324000300233 ENDSUBENT 232 0 2324000399999 ENDENTRY 3 0 2324099999999