ENTRY 32808 20201228 31983280800000001 SUBENT 32808001 20201228 31983280800100001 BIB 17 71 3280800100002 TITLE Determination of the cross-section for (n,p) and 3280800100003 (n,alpha) reactions on 153 Eu at neutron energies 3280800100004 from 13 to 15 MeV 3280800100005 AUTHOR (Junhua Luo, Li Jiang, Le Shan, Liang Zhou) 3280800100006 INSTITUTE (3CPRHXU,3CPRNPC) 3280800100007 REFERENCE (J,JP/G,47,075104,2020) 3280800100008 #doi:10.1088/1361-6471/ab8d8f 3280800100009 FACILITY (NGEN,3CPRNPC) K-400 Neutron Generator 3280800100010 INC-SOURCE (D-T) 3280800100011 REL-REF (I,32779001,Junhua Luo+,J,RPC,148,43,2018) 3280800100012 (I,,Junhua Luo+,J,NIM/B,298,61,2013) 3280800100013 The details of neutron generation and calculation of 3280800100014 neutron energies. 3280800100015 SAMPLE (63-EU-153,NAT=0.5219) 10 g of high-purity Eu2O3 3280800100016 powder was pressed at 980 MPa. The thickness of three 3280800100017 samples were 0.1427 cm, 0.1718 cm, and 0.1065 cm with 3280800100018 a diameter of 2.0 cm. Each of them was sandwiched 3280800100019 between two neutron-flux monitor foils made of 3280800100020 aluminum (whose purity and thickness are of 99.99% 3280800100021 and 0.3 mm, respectively) having the same diameter as 3280800100022 the circular sample. 3280800100023 METHOD (ACTIV) The entire process for irradiation of all the 3280800100024 three samples lasted 120 min with a yield about 3 to 3280800100025 4E10 n/(4 pi*s). The three samples were placed at 3280800100026 angles of 0, 90 or 135 deg relative to the deuterium 3280800100027 beam direction, around the T-Ti target at distances 3280800100028 of about 40 mm from it. After the irradiation process, 3280800100029 three samples were cooled for 1 h, 30 h and 6.5 years. 3280800100030 DETECTOR (HPGE) The gamma-ray activities of 153Sm, 150Pm, and 3280800100031 24Na were determined by a high-purity germanium 3280800100032 detector (ORTEC, model GEM 60P, crystal diameter: 3280800100033 70.1 mm, crystal length: 72.3 mm, made in the USA), 3280800100034 having a relative efficiency of about 68% and an 3280800100035 energy resolution of 1.69 keV at 1332 keV for 60Co. 3280800100036 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) 3280800100037 DECAY-MON (11-NA-24,14.959HR,DG,1368.6,1.00) 3280800100038 MONIT-REF (,M.Wagner+,B,PH-DAT,13-5,,1990) 3280800100039 CORRECTION F is the total correction factor of the activity, 3280800100040 F=fs*fc*fg. fs, fc and fg are correction factors for 3280800100041 the self-absorption of the sample at a given gamma-ray 3280800100042 energy, the coincidence sum effect of cascade 3280800100043 gamma-rays of the investigated nuclide and the 3280800100044 counting geometry, respectively. 3280800100045 Correction factors for the self-absorption: 3280800100046 ****************************************************** 3280800100047 Samples thickness h (cm) 3280800100048 Gamma-ray energy (keV)******************************** 3280800100049 0.1427 0.1718 0.1065 3280800100050 ****************************************************** 3280800100051 103.18 2.878 3.361 2.314 3280800100052 831.85 1.038 1.046 1.028 3280800100053 1165.77 1.030 1.036 1.022 3280800100054 1324.51 1.028 1.034 1.021 3280800100055 ****************************************************** 3280800100056 ERR-ANALYS (ERR-T) The total uncertainty was determined by 3280800100057 taking the root mean square of the individual 3280800100058 uncertainties, 5.5-15.8%. 3280800100059 (ERR-S,0.8,7.2) Counting statistics 3280800100060 (ERR-1,2.,3.) Detector efficiency 3280800100061 (ERR-2) Weight of samples 0.1% 3280800100062 (ERR-3) Self-absorption of gamma-rays 1.% 3280800100063 (ERR-4,0.1,1.) Cooling and measuring times 3280800100064 (ERR-5,0.1,7.0) some of other uncertainties originated 3280800100065 from the parameters of the measured and standard 3280800100066 nuclei, such as the uncertainties in the branching 3280800100067 ratio of characteristic gamma-rays, in the half-lives 3280800100068 of the the radioactive product nuclei, and so on. 3280800100069 (MONIT-ERR) Standard cross-sections 0.7% 3280800100070 STATUS (TABLE) Table 4 of J. Phys. G: 3280800100071 Nucl. Part. Phys. 47,075104,2020. 3280800100072 HISTORY (20201228C) Jimin Wang (CNDC) 3280800100073 ENDBIB 71 0 3280800100074 COMMON 2 3 3280800100075 ERR-2 ERR-3 3280800100076 PER-CENT PER-CENT 3280800100077 0.1 1. 3280800100078 ENDCOMMON 3 0 3280800100079 ENDSUBENT 78 0 3280800199999 SUBENT 32808002 20201228 31983280800200001 BIB 2 2 3280800200002 REACTION (63-EU-153(N,P)62-SM-153,,SIG) 3280800200003 DECAY-DATA (62-SM-153,46.50HR,DG,103.18,0.2925) 3280800200004 ENDBIB 2 0 3280800200005 NOCOMMON 0 0 3280800200006 DATA 6 3 3280800200007 EN EN-ERR DATA ERR-T MONIT MONIT-ERR 3280800200008 MEV MEV MB MB MB MB 3280800200009 13.5 0.2 3.6 0.5 125.7 0.8 3280800200010 14.1 0.2 3.8 0.6 121.6 0.6 3280800200011 14.8 0.2 4.5 0.7 111.9 0.5 3280800200012 ENDDATA 5 0 3280800200013 ENDSUBENT 12 0 3280800299999 SUBENT 32808003 20201228 31983280800300001 BIB 2 4 3280800300002 REACTION (63-EU-153(N,A)61-PM-150,,SIG) 3280800300003 DECAY-DATA (61-PM-150,2.698HR,DG,831.85,0.119, 3280800300004 DG,1165.77,0.158, 3280800300005 DG,1324.51,0.175) 3280800300006 ENDBIB 4 0 3280800300007 NOCOMMON 0 0 3280800300008 DATA 6 3 3280800300009 EN EN-ERR DATA ERR-T MONIT MONIT-ERR 3280800300010 MEV MEV MB MB MB MB 3280800300011 13.5 0.2 1.25 0.07 125.7 0.8 3280800300012 14.1 0.2 1.46 0.08 121.6 0.6 3280800300013 14.8 0.2 1.71 0.11 111.9 0.5 3280800300014 ENDDATA 5 0 3280800300015 ENDSUBENT 14 0 3280800399999 ENDENTRY 3 0 3280899999999