ENTRY 32780 20201208 31983278000000001 SUBENT 32780001 20201208 31983278000100001 BIB 16 59 3278000100002 TITLE Isomer ratios and cross sections for the isomeric 3278000100003 pair 122mSb and 122gSb in the 123Sb(n,2n) reaction 3278000100004 AUTHOR (Junhua Luo,Li Jiang,Long He) 3278000100005 INSTITUTE (3CPRHXU,3CPRNPC) 3278000100006 REFERENCE (J,ARI,140,115,2018) 3278000100007 #doi:10.1016/j.apradiso.2018.07.003 3278000100008 FACILITY (NGEN,3CPRNPC) K-400 neutron generator 3278000100009 INC-SOURCE (D-T) Neutrons were produced with an effective 3278000100010 deuteron beam energy of 136 keV and beam current of 3278000100011 260 uA. During irradiation, the neutron flux was 3278000100012 monitored by accompanying alpha-particles so that 3278000100013 corrections could be made for small variations in the 3278000100014 yield. 3278000100015 SAMPLE (51-SB-123,NAT=0.4279) Approximately 6.1 g of Sb with 3278000100016 natural isotopic composition (of 99.99% purity) was 3278000100017 formed into a pellet of 0.097 cm thick and 2.0 cm in 3278000100018 diameter. Three samples and six monitors (niobium 3278000100019 foils of 99.99% purity) with identical diameters were 3278000100020 irradiated. 3278000100021 METHOD (ACTIV) a stack of Nb-Sb-Nb was assembled from these 3278000100022 three samples and mounted at 0, 90 and 135 deg 3278000100023 relative to the beam direction. 3278000100024 DETECTOR (HPGE) High-purity germanium (HPGE) gamma-ray 3278000100025 spectroscopy methods (about 68% relative efficiency, 3278000100026 1.69 keV resolution at 1332.5 keV of 60Co). The 3278000100027 detector was coupled to a digital gamma spectrometry 3278000100028 system (ORTEC, model GEM 60 P) and maestro data 3278000100029 acquisition software. The distance from the sample to 3278000100030 detector end cap was 0-8 cm. 3278000100031 (SIBAR) The Au-Si surface barrier detector used to 3278000100032 detect accompanying alpha-particle was at 135 deg and 3278000100033 a distance of 110 cm from the target. 3278000100034 MONITOR (41-NB-93(N,2N)41-NB-92-M,,SIG) 3278000100035 DECAY-MON (41-NB-92-M,10.15D,DG,934.44,0.9915) 3278000100036 MONIT-REF (,M.Wagner+,B,PH-DAT,13-5,,1990) 3278000100037 CORRECTION F is the total correction factor of the activity, 3278000100038 F=fc*fs. fc is the correction factor for the 3278000100039 coincidence sum effect of the cascading gamma-rays in 3278000100040 the investigated nuclide and fs is the correction 3278000100041 factor for self-absorption of the sample for a given 3278000100042 gamma energy. Correction factors for the 3278000100043 self-absorption of the sample at 61.4, 76.06, 564.24 3278000100044 and 692.65 keV are 2.890, 2.065, 1.012 and 1.010. 3278000100045 ERR-ANALYS (ERR-T) The total uncertainty 9.75-15.17% 3278000100046 (ERR-S,0.1,2.6) Counting statistics 0.1-2.6% 3278000100047 (ERR-1,2.0,4.0) Photopeak detection efficiency 2.0-4.0%3278000100048 (ERR-2,0.04,13.05) Relative gamma-ray intensity 0.04- 3278000100049 13.05% 3278000100050 (ERR-3,0.01,0.2) Half-life 0.01-0.2% 3278000100051 (ERR-4,,0.1) Sample weight < 0.1% 3278000100052 (ERR-5,,1.) Timing < 1% 3278000100053 (ERR-6) Self-absorption of gamma-rays about 0.5% 3278000100054 (ERR-7) Isotopic abundance 0.2% 3278000100055 (MONIT-ERR) Cross section of the monitor reaction 1.1- 3278000100056 1.5% 3278000100057 STATUS (TABLE) Table 3 and text (p4) of Applied 3278000100058 Rad.Isotopes, 140(2018)115-120. 3278000100059 HISTORY (20200217C) Compiled by Xi Tao (CNDC) 3278000100060 (20201208A) On. Major revision in 002. 3278000100061 ENDBIB 59 0 3278000100062 COMMON 2 3 3278000100063 ERR-6 ERR-7 3278000100064 PER-CENT PER-CENT 3278000100065 0.5 0.2 3278000100066 ENDCOMMON 3 0 3278000100067 ENDSUBENT 66 0 3278000199999 SUBENT 32780002 20201208 31983278000200001 BIB 3 4 3278000200002 REACTION (51-SB-123(N,2N)51-SB-122-M,,SIG) 3278000200003 DECAY-DATA ((1.)51-SB-122-M,4.191MIN,DG,61.4,0.55) 3278000200004 ((2.)51-SB-122-M,4.191MIN,DG,76.06,0.23) 3278000200005 HISTORY (20201208A) On. DECAY-DATA(intensity): 23 -> 0.23 3278000200006 ENDBIB 4 0 3278000200007 COMMON 1 3 3278000200008 EN-ERR 3278000200009 MEV 3278000200010 0.2 3278000200011 ENDCOMMON 3 0 3278000200012 DATA 6 6 3278000200013 EN DATA ERR-T MONIT MONIT-ERR DECAY-FLAG 3278000200014 MEV MB MB MB MB NO-DIM 3278000200015 13.5 466. 71. 457.9 6.8 1. 3278000200016 13.5 528. 75. 457.9 6.8 2. 3278000200017 14.1 522. 72. 459.8 6.8 1. 3278000200018 14.1 594. 82. 459.8 6.8 2. 3278000200019 14.8 571. 85. 459.7 5.0 1. 3278000200020 14.8 611. 90. 459.7 5.0 2. 3278000200021 ENDDATA 8 0 3278000200022 ENDSUBENT 21 0 3278000299999 SUBENT 32780003 20200217 31953278000300001 BIB 2 3 3278000300002 REACTION (51-SB-123(N,2N)51-SB-122-G,,SIG) 3278000300003 DECAY-DATA ((1.)51-SB-122-G,2.7238D,DG,564.24,0.7067) 3278000300004 ((2.)51-SB-122-G,2.7238D,DG,692.65,0.0385) 3278000300005 ENDBIB 3 0 3278000300006 COMMON 1 3 3278000300007 EN-ERR 3278000300008 MEV 3278000300009 0.2 3278000300010 ENDCOMMON 3 0 3278000300011 DATA 6 6 3278000300012 EN DATA ERR-T MONIT MONIT-ERR DECAY-FLAG 3278000300013 MEV MB MB MB MB NO-DIM 3278000300014 13.5 1198. 188. 457.9 6.8 1.3278000300015 13.5 1109. 169. 457.9 6.8 2.3278000300016 14.1 1251. 180. 459.8 6.8 1.3278000300017 14.1 1108. 160. 459.8 6.8 2.3278000300018 14.8 1259. 194. 459.7 5.0 1.3278000300019 14.8 1266. 194. 459.7 5.0 2.3278000300020 ENDDATA 8 0 3278000300021 ENDSUBENT 20 0 3278000399999 SUBENT 32780004 20200217 31953278000400001 BIB 2 8 3278000400002 REACTION 1(51-SB-123(N,2N)51-SB-122-M,,SIG,,AV) 3278000400003 2(51-SB-123(N,2N)51-SB-122-G,,SIG,,AV) 3278000400004 3(51-SB-123(N,2N)51-SB-122,,SIG) 3278000400005 4(51-SB-123(N,2N)51-SB-122-M/G,,SIG/RAT) 3278000400006 STATUS 1(DEP,32780002) 123Sb(n,2n)122mSb cross sections for 3278000400007 2 gamma lines 3278000400008 2(DEP,32780003) 123Sb(n,2n)122gSb cross sections for 3278000400009 2 gamma lines 3278000400010 ENDBIB 8 0 3278000400011 NOCOMMON 0 0 3278000400012 DATA 12 3 3278000400013 EN EN-ERR DATA 1ERR-T 1DATA 2ERR-T 23278000400014 DATA 3ERR-T 3ERR-T 4DATA 4MONIT MONIT-ERR 3278000400015 MEV MEV MB MB MB MB 3278000400016 MB MB NO-DIM NO-DIM MB MB 3278000400017 13.5 0.2 496. 52. 1149. 126.3278000400018 1645. 178. 0.43 0.07 457.9 6.83278000400019 14.1 0.2 554. 54. 1232. 126.3278000400020 1786. 180. 0.45 0.06 459.8 6.83278000400021 14.8 0.2 590. 62. 1263. 137.3278000400022 1853. 199. 0.47 0.07 459.7 5.03278000400023 ENDDATA 10 0 3278000400024 ENDSUBENT 23 0 3278000499999 ENDENTRY 4 0 3278099999999