ENTRY 32746 20171012 31813274600000001 SUBENT 32746001 20171012 31813274600100001 BIB 14 42 3274600100002 TITLE 169Tm(n,2n)168Tm cross sections from the threshold to 3274600100003 20 MeV 3274600100004 AUTHOR (Junhua Luo, Li An, Li Jiang) 3274600100005 INSTITUTE (3CPRHXU,3CPRNPC) 3274600100006 REFERENCE (J,NSE,178,261,2014) 3274600100007 #doi:10.13182/NSE13-18 3274600100008 FACILITY (NGEN,3CPRNPC) K-400 Neutron Generator. 3274600100009 SAMPLE Sample pellets (0.2 cm in thickness, 2.0 cm in 3274600100010 diameter, around 3 g in weight, and >99.99% pure) 3274600100011 were pressed from natural Tm2O3 powder. Each of them 3274600100012 was sandwiched between two Nb metal foils, and the 3274600100013 purity of the Nb foils was >99.99%. 3274600100014 INC-SOURCE (D-T) Neutrons were produced with an effective 3274600100015 deuteron beam energy of 136 keV and beam current of 3274600100016 280 uA. The T-Mo target used in the generator had a 3274600100017 thickness of 0.566 mg/cm2 and an active area with a 3274600100018 diameter of 1.2 cm. 3274600100019 DETECTOR (HPGE) High-purity germanium detector (ORTEC, model 3274600100020 GEM 60P, crystal diameter: 70.1 mm, crystal length: 3274600100021 72.3 mm, made in the United States) with a relative 3274600100022 efficiency of around 68% and an energy resolution of 3274600100023 1.69 keV at 1332 keV for 60Co. 3274600100024 METHOD (ACTIV) Lasted about 13 h with a yield of about 2 to 3274600100025 3E10 n/(4pi*s). The groups of samples were placed at 3274600100026 0- or 135-deg angle relative to the beam direction 3274600100027 and centered about the tritium-molybdenum (T-Mo) 3274600100028 target at distances of about 4 cm. 3274600100029 MONITOR (41-NB-93(N,2N)41-NB-92-M,,SIG) 3274600100030 MONIT-REF (,M.Wagner+,B,PH-DAT,13-5,1990) 3274600100031 ERR-ANALYS (ERR-T) Total uncertainty 3274600100032 (ERR-S,0.4,5.4) Counting statistics 0.4% - 5.4% 3274600100033 (MONIT-ERR) Standard cross-section uncertainties 1.5% 3274600100034 (ERR-1,2.,3.) Detector efficiency 2% - 3% 3274600100035 (ERR-2) Weight of samples 0.1% 3274600100036 (ERR-3) Self-absorption of the gamma ray 0.5% 3274600100037 (ERR-4,0.,5.) The coincidence summing effect of 3274600100038 cascade gamma rays 0% - 5% 3274600100039 (ERR-5)the uncertainties of irradiation, and cooling 3274600100040 and measuring times 0.1% 3274600100041 STATUS (TABLE) Data were obtained from TABLE 1 of 3274600100042 Nucl.Sci.Eng.,178,261,2014 3274600100043 HISTORY (20171012C) Compiled by Xi Tao (CNDC) 3274600100044 ENDBIB 42 0 3274600100045 COMMON 3 3 3274600100046 ERR-2 ERR-3 ERR-5 3274600100047 PER-CENT PER-CENT PER-CENT 3274600100048 0.1 0.5 0.1 3274600100049 ENDCOMMON 3 0 3274600100050 ENDSUBENT 49 0 3274600199999 SUBENT 32746002 20171012 31813274600200001 BIB 2 14 3274600200002 REACTION (69-TM-169(N,2N)69-TM-168,,SIG) 3274600200003 DECAY-DATA (69-TM-168,93.1D,DG,184.295,0.242, 3274600200004 DG,198.251,0.591, 3274600200005 DG,447.515,0.2509, 3274600200006 DG,546.81,0.02654, 3274600200007 DG,631.705,0.0926, 3274600200008 DG,645.775,0.01482, 3274600200009 DG,720.392,0.12, 3274600200010 DG,730.66,0.05275, 3274600200011 DG,741.355,0.1281, 3274600200012 DG,815.989,0.5095, 3274600200013 DG,821.162,0.1199, 3274600200014 DG,829.948,0.0698, 3274600200015 DG,914.933,0.03117) 3274600200016 ENDBIB 14 0 3274600200017 NOCOMMON 0 0 3274600200018 DATA 6 2 3274600200019 EN EN-ERR DATA ERR-T MONIT MONIT-ERR 3274600200020 MEV MEV MB MB MB MB 3274600200021 13.5 0.2 1827. 95. 457.9 6.83274600200022 14.8 0.2 1926. 82. 459.7 5.03274600200023 ENDDATA 4 0 3274600200024 ENDSUBENT 23 0 3274600299999 ENDENTRY 2 0 3274699999999