ENTRY 32855 20220317 32083285500000001 SUBENT 32855001 20220317 32083285500100001 BIB 16 72 3285500100002 TITLE Ground-state and isomeric-state cross-sections for 3285500100003 92Mo(n,a)89Zr and 95Mo(n,p)95Nb reactions in the 3285500100004 13-15 MeV energy region 3285500100005 AUTHOR (Junhua Luo,Li Jiang) 3285500100006 INSTITUTE (3CPRHXU,3CPRNPC) 3285500100007 REFERENCE (J,RCA,109,513,2021) 3285500100008 #doi:10.1515/ract-2021-1034 3285500100009 FACILITY (NGEN,3CPRNPC) Pd-300 Neutron Generator 3285500100010 INC-SOURCE (D-T) Fourteen mega electron volt neutron flux was 3285500100011 generated using the T(d,n)4He reaction induced by 3285500100012 the 135 keV deuteron beam energy and 200 uA beam 3285500100013 current. 3285500100014 DETECTOR (HPGE) A calibrated GEM-60P coaxial HPGe detector 3285500100015 (72.3 mm long and 70.1 mm in diameter) was used to 3285500100016 measure the gamma-ray activities of 89mZr, 89gZr, 3285500100017 95mNb, 95gNb and 24Na nuclei after the samples decay 3285500100018 for 5~1800 min. The relative efficiency and energy 3285500100019 resolution of the HPGe detector were 68% and 1.69 keV 3285500100020 (at 1.332 MeV), respectively. The efficiency of the 3285500100021 detector was pre-calibrated using various standard 3285500100022 gamma sources, which were 57Co, 60Co, 109Cd, 133Ba, 3285500100023 137Cs, 152Eu, 241Am and 226Ra. The uncertainty in the 3285500100024 efficiency curve was estimated to be about 3%, while 3285500100025 the uncertainty of the activity of the standard 3285500100026 source is about 2.5-3.0%. 3285500100027 (SIBAR) The neutron flux during the irradiation was 3285500100028 monitored by counting alpha particles using Au-Si 3285500100029 surface barrier detector positioned at a 135 degree 3285500100030 angle to correct for the neutron flux variations. 3285500100031 SAMPLE Three Mo foil circles (99.99% purity, 0.5 mm thick 3285500100032 and 20 mm in diameter), each of which was placed 3285500100033 between two Al foil circles (99.999% purity, 0.3 mm 3285500100034 thick and 20 mm in diameter). A stack of Al-Mo-Al 3285500100035 was assembled and wrapped in a cadmium foil in order 3285500100036 to reduce the contribution of thermal and epithermal 3285500100037 effects. 3285500100038 METHOD (ACTIV) Three samples were positioned at 0, 90, and 3285500100039 135 degree angles with regards to the beam and 5 cm 3285500100040 away from the T-Ti target, irradiated for 2 h, during 3285500100041 which the total yield was about 3E10~4E10 n/s. 3285500100042 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) 3285500100043 DECAY-MON (11-NA-24,14.997HR,DG,1368.6,1.00) 3285500100044 MONIT-REF (,M.Wagner,B,PH-DAT,13-5,,1990) 3285500100045 CORRECTION The activity correction factor F can be expressed as 3285500100046 F=fg*fs, where fg and fs are correction factors at a 3285500100047 certain counting geometry and gamma-ray 3285500100048 self-absorption, respectively. 3285500100049 Correction factors for the self-absorption: 3285500100050 ****************************************************** 3285500100051 Samples thickness h (cm) 3285500100052 Gamma-ray energy (keV)******************************** 3285500100053 0.0480 0.0643 0.0481 3285500100054 ****************************************************** 3285500100055 235.960 1.051 1.069 1.051 3285500100056 587.8 1.020 1.026 1.020 3285500100057 765.803 1.017 1.023 1.017 3285500100058 909.15 1.015 1.020 1.015 3285500100059 ****************************************************** 3285500100060 ERR-ANALYS (ERR-T) The total measurement uncertainty consisted 3285500100061 of standard uncertainties as well as of the 3285500100062 uncertainties associated with the calculations of the 3285500100063 following. 3285500100064 (ERR-S,0.1,8.0) Counting 0.1-8.0%. 3285500100065 (ERR-1) Photopeak detection efficiency 3.0%. 3285500100066 (ERR-2,0.01,3.2) Relative gamma-ray intensity 0.01-3.2%3285500100067 (ERR-3,0.02,0.9) Half-life 0.02-0.9%. 3285500100068 (ERR-4,,1.) Measurement time <1.0%. 3285500100069 (ERR-5,,0.1) Sample mass <0.1%. 3285500100070 (ERR-6) Gamma ray self-absorption, about 0.5%. 3285500100071 (MONIT-ERR) Monitor reaction cross-section. 3285500100072 STATUS (TABLE) Table 4 of Radiochim. Acta 513,109(7),2021. 3285500100073 HISTORY (20220317C) Yangyang Liu (CNDC) 3285500100074 ENDBIB 72 0 3285500100075 COMMON 2 3 3285500100076 ERR-1 ERR-6 3285500100077 PER-CENT PER-CENT 3285500100078 3. 0.5 3285500100079 ENDCOMMON 3 0 3285500100080 ENDSUBENT 79 0 3285500199999 SUBENT 32855002 20220317 32083285500200001 BIB 4 8 3285500200002 REACTION 1(42-MO-92(N,A)40-ZR-89-M,,SIG) 3285500200003 2(42-MO-92(N,A)40-ZR-89-G,,SIG) 3285500200004 3(42-MO-92(N,A)40-ZR-89,,SIG) 3285500200005 4(42-MO-92(N,A)40-ZR-89-M/G,,SIG/RAT) 3285500200006 DECAY-DATA1(40-ZR-89-M,4.161MIN,DG,587.8,0.8962) 3285500200007 2(40-ZR-89-G,78.41HR,DG,909.15,0.9904) 3285500200008 SAMPLE (42-MO-92,NAT=0.1453) 3285500200009 ERR-ANALYS (ERR-7) Isotopic abundance for 92Mo, 2.1%. 3285500200010 ENDBIB 8 0 3285500200011 COMMON 1 3 3285500200012 ERR-7 3285500200013 PER-CENT 3285500200014 2.1 3285500200015 ENDCOMMON 3 0 3285500200016 DATA 12 3 3285500200017 EN EN-ERR DATA 1ERR-T 1DATA 2ERR-T 23285500200018 DATA 3ERR-T 3DATA 4ERR-T 4MONIT MONIT-ERR 3285500200019 MEV MEV MB MB MB MB 3285500200020 MB MB NO-DIM NO-DIM MB MB 3285500200021 13.5 0.2 3.2 0.3 22.3 1.53285500200022 25.5 1.6 0.14 0.02 125.7 0.83285500200023 14.1 0.2 3.6 0.3 23.2 1.83285500200024 26.8 1.9 0.16 0.02 121.6 0.63285500200025 14.8 0.2 4.1 0.5 25.1 2.23285500200026 29.2 2.3 0.16 0.03 111.9 0.53285500200027 ENDDATA 10 0 3285500200028 ENDSUBENT 27 0 3285500299999 SUBENT 32855003 20220317 32083285500300001 BIB 4 8 3285500300002 REACTION 1(42-MO-95(N,P)41-NB-95-M,,SIG) 3285500300003 2(42-MO-95(N,P)41-NB-95-G,,SIG) 3285500300004 3(42-MO-95(N,P)41-NB-95,,SIG) 3285500300005 4(42-MO-95(N,P)41-NB-95-M/G,,SIG/RAT) 3285500300006 DECAY-DATA1(41-NB-95-M,3.61D,DG,235.690,0.248) 3285500300007 2(41-NB-95-G,34.991D,DG,765.803,0.99808) 3285500300008 SAMPLE (42-MO-95,NAT=0.1584) 3285500300009 ERR-ANALYS (ERR-7) Isotopic abundance for 95Mo, 0.7%. 3285500300010 ENDBIB 8 0 3285500300011 COMMON 1 3 3285500300012 ERR-7 3285500300013 PER-CENT 3285500300014 0.7 3285500300015 ENDCOMMON 3 0 3285500300016 DATA 12 3 3285500300017 EN EN-ERR DATA 1ERR-T 1DATA 2ERR-T 23285500300018 DATA 3ERR-T 3DATA 4ERR-T 4MONIT MONIT-ERR 3285500300019 MEV MEV MB MB MB MB 3285500300020 MB MB NO-DIM NO-DIM MB MB 3285500300021 13.5 0.2 8.5 0.6 31.3 2.13285500300022 39.8 2.2 0.27 0.03 125.7 0.83285500300023 14.1 0.2 8.6 0.6 33.6 2.33285500300024 42.2 2.4 0.26 0.03 121.6 0.63285500300025 14.8 0.2 9.5 0.7 34.9 2.53285500300026 44.4 2.6 0.27 0.03 111.9 0.53285500300027 ENDDATA 10 0 3285500300028 ENDSUBENT 27 0 3285500399999 ENDENTRY 3 0 3285599999999