ENTRY 32931 20251126 3293100000001 SUBENT 32931001 20251126 20260228 3293100100001 BIB 14 42 3293100100002 TITLE Measurement of fast-neutron activation cross section 3293100100003 of the 109Ag(n,2n)108mAg reaction and its theoretical 3293100100004 calculation of excitation function 3293100100005 AUTHOR (Yueli Song, Fengqun Zhou, Yajuan Hao, Xiaopeng Zhang, 3293100100006 Pengfei Ji, Yong Li) 3293100100007 INSTITUTE (3CPRPDU) 3293100100008 REFERENCE (J,ARI,203,111111,2024) 3293100100009 #doi:10.1016/j.apradiso.2023.111111 3293100100010 FACILITY (NGEN,3CPRNPC) K-400 neutron generator 3293100100011 INC-SOURCE (D-T) The solid tritium-titanium (T-Ti) target used 3293100100012 in the neutron generator was about 2.19 mg/cm2 thick. 3293100100013 Neutrons with a yield of about 5 E10 n/s were 3293100100014 produced from the T(d,n)4He reaction with an 3293100100015 effective deuteron beam energy of 255 keV and a beam 3293100100016 current of 350 uA. 3293100100017 SAMPLE (47-AG-109,NAT=0.48161) The natural metallic silver 3293100100018 plate of 99.99% purity and about 2 mm thickness was 3293100100019 made into four disc shaped samples with a diameter of 3293100100020 20 mm. 3293100100021 METHOD (ACTIV) The sample groups were irradiated for more 3293100100022 than 7.5 h. The sample groups were placed at angles 3293100100023 of 0 deg, 45 deg, 90 deg and 135 deg relative to the 3293100100024 direction of the deuteron beam, respectively. The 3293100100025 distances of the sample groups from the center of the 3293100100026 T-Ti target were about 40 - 50 mm. The samples were 3293100100027 cooled for more than 186 days after irradiation, and 3293100100028 the sample were measured for about 10 - 20 h. 3293100100029 DETECTOR (SIBAR) The neutron flux was monitored by the 3293100100030 accompanying alpha-particles, which were measured 3293100100031 with an Au-Si surface barrier detector used at the 3293100100032 angle of 135 deg. 3293100100033 (HPGE) Gamma-ray activities of 108mAg and 92mNb were 3293100100034 measured by a well-calibrated GEM-60P coaxial HPGe 3293100100035 detector (ORTEC made in U.S.A), of which crystal 3293100100036 diameter is 70.1 mm, crystal length is 72.3 mm, 3293100100037 relative efficiency is 68% and the energy resolution 3293100100038 is 1.69 keV FWHM at 1332 keV for 60Co. 3293100100039 MONITOR (41-NB-93(N,2N)41-NB-92-M,,SIG) 3293100100040 MONIT-REF (,M.Wagner+,B,PH-DAT,13-5,183,1990) 3293100100041 DECAY-MON (41-NB-92-M,10.15D,DG,934.43,0.9915) 3293100100042 STATUS (TABLE,,Yueli Song+,J,ARI,203,111111,2024) Table 2 3293100100043 HISTORY (20251126C) Xi Tao 3293100100044 ENDBIB 42 0 3293100100045 NOCOMMON 0 0 3293100100046 ENDSUBENT 45 0 3293100199999 SUBENT 32931002 20251126 20260228 3293100200001 BIB 3 14 3293100200002 REACTION (47-AG-109(N,2N)47-AG-108-M,,SIG) 3293100200003 DECAY-DATA ((1.)47-AG-108-M,438.YR,DG,722.9,0.908) 3293100200004 ((2.)47-AG-108-M,438.YR,DG,614.3,0.898) 3293100200005 ((3.)47-AG-108-M,438.YR,DG,433.9,0.905) 3293100200006 ERR-ANALYS (ERR-T) The overall uncertainties (6.0 - 7.4%) 3293100200007 (ERR-S,0.5,4.3) The counting statistics (0.5 - 4.3%) 3293100200008 (ERR-1) The gamma-ray detection efficiency (3.0%) 3293100200009 (ERR-2) The weight of samples (0.1%) 3293100200010 (ERR-3) The sample geometry (1.0%) 3293100200011 (ERR-4) The neutron fluctuation (1.0%) 3293100200012 (ERR-5) The self-absorption of gamma-ray (1.0%) 3293100200013 (ERR-6,0.2,2.1) The half-life of products (0.2 - 2.1%) 3293100200014 (ERR-7,0.,2.116) The relative gamma-ray intensity of 3293100200015 108mAg (0 - 2.116%) 3293100200016 ENDBIB 14 0 3293100200017 COMMON 5 3 3293100200018 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 3293100200019 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3293100200020 3.0 0.1 1.0 1.0 1.0 3293100200021 ENDCOMMON 3 0 3293100200022 DATA 7 12 3293100200023 EN EN-RSL-HW DATA ERR-T DECAY-FLAG MONIT 3293100200024 MONIT-ERR 3293100200025 MEV MEV MB MB NO-DIM MB 3293100200026 MB 3293100200027 13.5 0.3 569. 41. 1. 457.93293100200028 6.8 3293100200029 13.5 0.3 569. 41. 2. 457.93293100200030 6.8 3293100200031 13.5 0.3 521. 32. 3. 457.93293100200032 6.8 3293100200033 14.1 0.2 648. 48. 1. 459.83293100200034 6.8 3293100200035 14.1 0.2 648. 48. 2. 459.83293100200036 6.8 3293100200037 14.1 0.2 604. 40. 3. 459.83293100200038 6.8 3293100200039 14.4 0.3 679. 47. 1. 459.83293100200040 6.8 3293100200041 14.4 0.3 679. 47. 2. 459.83293100200042 6.8 3293100200043 14.4 0.3 609. 39. 3. 459.83293100200044 6.8 3293100200045 14.8 0.2 650. 43. 1. 459.73293100200046 5.0 3293100200047 14.8 0.2 650. 43. 2. 459.73293100200048 5.0 3293100200049 14.8 0.2 601. 37. 3. 459.73293100200050 5.0 3293100200051 ENDDATA 28 0 3293100200052 ENDSUBENT 51 0 3293100299999 SUBENT 32931003 20251126 20260228 3293100300001 BIB 3 4 3293100300002 REACTION (47-AG-109(N,2N)47-AG-108-M,,SIG,,AV) 3293100300003 ERR-ANALYS (DATA-ERR) The weighted average error 3293100300004 STATUS (DEP,32931002) The weighted average data from three 3293100300005 characteristic gamma-rays. 3293100300006 ENDBIB 4 0 3293100300007 NOCOMMON 0 0 3293100300008 DATA 4 4 3293100300009 EN EN-RSL-HW DATA DATA-ERR 3293100300010 MEV MEV MB MB 3293100300011 13.5 0.3 530. 21. 3293100300012 14.1 0.2 601. 25. 3293100300013 14.4 0.3 651. 26. 3293100300014 14.8 0.2 616. 23. 3293100300015 ENDDATA 6 0 3293100300016 ENDSUBENT 15 0 3293100399999 ENDENTRY 3 0 3293199999999