ENTRY 32796 20250801 3279600000001 SUBENT 32796001 20250801 20260228 3279600100001 BIB 15 47 3279600100002 TITLE Measurement of the (n,2n) reaction cross-sections of 3279600100003 iodine and cesium induced by D-T neutrons with 3279600100004 covariance analysis 3279600100005 AUTHOR (Changlin Lan,Yuxing Niu,Yuting Wei,Fangxiao Lu, 3279600100006 Xianlin Yang,Ruirui Xu,Yue Zhang,Yujie Ge,Jiahao Wang, 3279600100007 Gong Jiang) 3279600100008 INSTITUTE (3CPRLNZ,3CPRAEP) 3279600100009 (3CPRCPR) China National Nuclear Corporation, Beijing 3279600100010 REFERENCE (J,CPH/C,47,094001,2023) 3279600100011 #doi:10.1088/1674-1137/ace313 3279600100012 FACILITY (NGEN,3CPRNPC) K-400 Intense Neutron Generator 3279600100013 SAMPLE The cesium iodide (CsI) powder of natural isotopic 3279600100014 composition (purity 99.99%) was pressed into a 3279600100015 pellet, approximately 20.0 mm in diameter, and 1.5 mm 3279600100016 in thickness. 3279600100017 DETECTOR (HPGE) A lead-shielded HPGe detector (ORTEC, USA). 3279600100018 The efficiency of the detector was calibrated using 3279600100019 152Eu standard sources. The relative efficiency of 3279600100020 the detector was 68% compared to the NaI detector, 3279600100021 and the energy resolution was 1.82 keV (FWHM) at 1.33 3279600100022 MeV of 60Co. 3279600100023 METHOD (ACTIV) Irradiation was lasted approximately 17 h. 3279600100024 Three groups of samples were placed at 35, 75, and 3279600100025 112 deg relative to the deuteron beam direction and 3279600100026 centered around the T-Ti target at a distance of 3279600100027 approximately 4.5 cm. 3279600100028 MONITOR (41-NB-93(N,2N)41-NB-92-M,,SIG) 3279600100029 DECAY-MON (41-NB-92-M,10.150D,DG,934.440,0.99150) 3279600100030 INC-SOURCE (D-T) The neutrons were produced with a yield of 3279600100031 approximately 3 to 4E10 n/(4pis). The deuteron ion 3279600100032 beam current was 180 uA with of an energy of 250 keV. 3279600100033 The solid tritium-titanium (T-Ti) target used in the 3279600100034 generator was approximately 2.59 mg/cm2 thick. 3279600100035 CORRECTION The correction includes self-absorption correction, 3279600100036 cascade coincidence correction, and geometric 3279600100037 correction, respectively. 3279600100038 ERR-ANALYS (ERR-T) The uncertainty of measured cross sections 3279600100039 includes the gamma-ray characteristic peak counts, 3279600100040 efficiency, gamma-ray intensity, timing factor, 3279600100041 isotopic abundance of the nuclei, number of atoms and 3279600100042 monitor reaction cross-section. 3279600100043 (ERR-S) The gamma-ray characteristic peak counts 3279600100044 (ERR-1) The full energy peak efficiency 3279600100045 (ERR-2) The branching intensity of gamma-rays 3279600100046 (ERR-3) The time factor 3279600100047 STATUS (TABLE,,Changlin Lan+,J,CPH/C,47,094001,2023) Table 4 3279600100048 HISTORY (20250801C) Jimin Wang 3279600100049 ENDBIB 47 0 3279600100050 NOCOMMON 0 0 3279600100051 ENDSUBENT 50 0 3279600199999 SUBENT 32796002 20250801 20260228 3279600200001 BIB 2 2 3279600200002 REACTION (53-I-127(N,2N)53-I-126,,SIG) 3279600200003 DECAY-DATA (53-I-126,12.930D,DG,388.633,0.35600) 3279600200004 ENDBIB 2 0 3279600200005 NOCOMMON 0 0 3279600200006 DATA 8 3 3279600200007 EN EN-RSL-HW DATA ERR-T ERR-S ERR-1 3279600200008 ERR-2 ERR-3 3279600200009 MEV MEV B B PER-CENT PER-CENT 3279600200010 PER-CENT PER-CENT 3279600200011 13.83 0.05 1.4189 0.0694 1.8637E-06 23.793279600200012 2.39 4.0049E-01 3279600200013 14.33 0.10 1.5468 0.0824 2.7367E-06 25.933279600200014 2.61 4.3847E-01 3279600200015 14.79 0.10 1.5919 0.0873 3.2182E-06 26.693279600200016 2.68 4.5307E-01 3279600200017 ENDDATA 10 0 3279600200018 ENDSUBENT 17 0 3279600299999 SUBENT 32796003 20250801 20260228 3279600300001 BIB 3 4 3279600300002 REACTION (55-CS-133(N,2N)55-CS-132,,SIG) 3279600300003 DECAY-DATA (55-CS-132,6.479D,DG,464.466,0.01580) 3279600300004 COMMENT The 1.8076+-0.1067 b at 14.79 MeV in Table 4 should 3279600300005 be 1.6654+-0.0884 b (Changlin Lan, 2024-12-23) 3279600300006 ENDBIB 4 0 3279600300007 NOCOMMON 0 0 3279600300008 DATA 8 3 3279600300009 EN EN-RSL-HW DATA ERR-T ERR-S ERR-1 3279600300010 ERR-2 ERR-3 3279600300011 MEV MEV B B PER-CENT PER-CENT 3279600300012 PER-CENT PER-CENT 3279600300013 13.83 0.05 1.4836 0.0719 1.2240E-04 24.873279600300014 3.76 6.3374E-02 3279600300015 14.33 0.10 1.6402 0.0878 1.7722E-04 27.493279600300016 41.52 7.1028E-02 3279600300017 14.79 0.10 1.6654 0.0884 2.0109E-04 30.303279600300018 4.58 7.9252E-02 3279600300019 ENDDATA 10 0 3279600300020 ENDSUBENT 19 0 3279600399999 ENDENTRY 3 0 3279699999999