ENTRY 32772 20181111 31873277200000001 SUBENT 32772001 20181111 31873277200100001 BIB 16 65 3277200100002 TITLE Activation cross section and isomeric cross section 3277200100003 ratios for the (n,2n) reaction on 153Eu 3277200100004 AUTHOR (Junhua Luo, Li Jiang, Suyuan Li) 3277200100005 INSTITUTE (3CPRHXU,3CPRNPC) 3277200100006 REFERENCE (J,PR/C,96,044617,2017) 3277200100007 #doi:10.1103/PhysRevC.96.044617 3277200100008 FACILITY (NGEN,3CPRNPC) Pd-300 Neutron Generator 3277200100009 INC-SOURCE (D-T) The deuteron beam energy is 136 keV and beam 3277200100010 current is 260 uA. 3277200100011 SAMPLE (63-EU-153,NAT=0.5219) Three Eu2O3 samples (99.99% 3277200100012 pure) were compressed at 10 t/cm2 to obtain 2.0 cm in 3277200100013 diameter. Thickness was 0.1427, 0.1718, and 0.1065 cm. 3277200100014 Each one of them was sandwiched between two Nb monitor 3277200100015 foils (Nb, 99.99% pure, 0.5 mm thick) of the same 3277200100016 diameter as the samples. 3277200100017 DETECTOR (HPGE) It consisted of a relative efficiency of 3277200100018 around 68% and an energy resolution of 1.69 keV at 3277200100019 1332 keV for Co-60 HPGe detector (ORTEC, model GEM 60P,3277200100020 crystal diameter: 70.1 mm, crystal length: 72.3 mm, 3277200100021 made in USA). The efficiency of the detector was 3277200100022 pre-calibrated using various standard gamma sources, 3277200100023 which were Co-57, Co-60, Cd-109, Ba-133, Cs-137, 3277200100024 Eu-152, Am-241, and Ra-226. 3277200100025 (SIBAR) The Au-Si surface barrier detector used to 3277200100026 detect alphas from d-T reaction in alpha-particle 3277200100027 tube was positioned at 135 deg and 110 cm from the 3277200100028 target. 3277200100029 METHOD (ACTIV) The irradiation was lasted approximately 120 3277200100030 min with a yield of 3 to 4E10 n/(4pi*s). The groups 3277200100031 of samples were positioned at 0, 90, and 135 deg 3277200100032 relative to the deuteron beam direction and centered 3277200100033 about the T-Ti target at distances of 40 mm. To avoid 3277200100034 the effect of low energy neutrons, samples were 3277200100035 wrapped in cadmium foil. During irradiation, the 3277200100036 neutron flux was monitored by accompanying 3277200100037 alpha-particles so that corrections could be made for 3277200100038 small variations in the yield. 3277200100039 MONITOR (41-NB-93(N,2N)41-NB-92-M,,SIG) 3277200100040 DECAY-MON (41-NB-92-M,10.15D,DG,934.44,0.9915) 3277200100041 MONIT-REF (,M.Wagner+,B,PH-DAT,13-5,,1990) 3277200100042 CORRECTION Total correction factor of the activity: F=fs*fg*fc. 3277200100043 fs was correction factors for the self-absorption of 3277200100044 the sample, fg was correction factors for the 3277200100045 counting geometry, fc was correction factors for the 3277200100046 coincidence sum effect of the cascading gamma rays. 3277200100047 Correction factors for the self-absorption at 89.489, 3277200100048 841.63, and 1112.1 keV were 3.993, 1.038, 1.031 for 3277200100049 sample 1 (0.1427 cm thick), 4.754, 1.046, 1.038 for 3277200100050 sample 2 (0.1718 cm thick), and 3.087, 1.028, 1.023 3277200100051 for sample 3 (0.1065 cm thick). 3277200100052 ERR-ANALYS (ERR-T) Total uncertainty 3277200100053 (ERR-S,0.2,3.3) Counting statistics 0.2-3.3% 3277200100054 (ERR-1,2.,4.5) Detector efficiency 2-4.5% 3277200100055 (ERR-2) Self-absorption of gamma-rays 1% 3277200100056 (ERR-3,0.1,0.2) Cooling and measuring times 0.1-0.2% 3277200100057 (ERR-4,0.8,11.3) Branching ratio of the 3277200100058 characteristic gamma-rays 0.8-11.3% 3277200100059 (ERR-5,0.1,1.1) Half-life of the radioactive product 3277200100060 nuclei 0.1-1.1% 3277200100061 (ERR-6) Weight of the samples 0.1% 3277200100062 (ERR-7) Abundance of the target isotope 0.2% 3277200100063 (MONIT-ERR) Standard cross sections uncertainties 1.5% 3277200100064 STATUS (TABLE) Data were obtained from Table 5 of 3277200100065 Phys.Rev.C,96,044617,2017 3277200100066 HISTORY (20181111C) Compiled by Xi Tao (CNDC) 3277200100067 ENDBIB 65 0 3277200100068 COMMON 4 3 3277200100069 ERR-2 ERR-6 ERR-7 MONIT-ERR 3277200100070 PER-CENT PER-CENT PER-CENT PER-CENT 3277200100071 1. 0.1 0.2 1.5 3277200100072 ENDCOMMON 3 0 3277200100073 ENDSUBENT 72 0 3277200199999 SUBENT 32772002 20181111 31873277200200001 BIB 2 8 3277200200002 REACTION 1(63-EU-153(N,2N)63-EU-152-M2,,SIG) 3277200200003 2(63-EU-153(N,2N)63-EU-152-M1,,SIG) 3277200200004 3(63-EU-153(N,2N)63-EU-152-G,M-,SIG) 3277200200005 4(63-EU-153(N,2N)63-EU-152-G+M2,,SIG) 3277200200006 5(63-EU-153(N,2N)63-EU-152,,SIG) 3277200200007 DECAY-DATA1(63-EU-152-M2,96.MIN,DG,89.849,0.697) 3277200200008 2(63-EU-152-M1,9.3116HR,DG,841.63,0.142) 3277200200009 3(63-EU-152-G,13.517YR,DG,1112.1,0.1367) 3277200200010 ENDBIB 8 0 3277200200011 NOCOMMON 0 0 3277200200012 DATA 14 3 3277200200013 EN EN-ERR DATA 1ERR-T 1DATA 2ERR-T 23277200200014 DATA 3ERR-T 3DATA 4ERR-T 4DATA 5ERR-T 53277200200015 MONIT MONIT-ERR 3277200200016 MEV MEV MB MB MB MB 3277200200017 MB MB MB MB MB MB 3277200200018 MB MB 3277200200019 13.5 0.2 74. 7. 309. 40.3277200200020 1390. 148. 1464. 155. 1773. 195.3277200200021 457.9 6.8 3277200200022 14.1 0.2 80. 7. 288. 36.3277200200023 1404. 175. 1484. 182. 1772. 218.3277200200024 459.8 6.8 3277200200025 14.8 0.2 85. 7. 269. 34.3277200200026 1448. 170. 1533. 177. 1802. 211.3277200200027 459.7 5.0 3277200200028 ENDDATA 15 0 3277200200029 ENDSUBENT 28 0 3277200299999 SUBENT 32772003 20181111 31873277200300001 BIB 1 2 3277200300002 REACTION 1(63-EU-153(N,2N)63-EU-152-M1/T,,SIG/RAT) 3277200300003 2(63-EU-153(N,2N)63-EU-152-M2/T,,SIG/RAT) 3277200300004 ENDBIB 2 0 3277200300005 NOCOMMON 0 0 3277200300006 DATA 6 3 3277200300007 EN EN-ERR DATA 1ERR-T 1DATA 2ERR-T 23277200300008 MEV MEV NO-DIM NO-DIM NO-DIM NO-DIM 3277200300009 13.5 0.2 0.17 0.02 0.042 0.0063277200300010 14.1 0.2 0.16 0.02 0.045 0.0073277200300011 14.8 0.2 0.15 0.02 0.047 0.0073277200300012 ENDDATA 5 0 3277200300013 ENDSUBENT 12 0 3277200399999 ENDENTRY 3 0 3277299999999