ENTRY 32702 20120820 3270200000001 SUBENT 32702001 20120820 20121214 3270200100001 BIB 16 50 3270200100002 TITLE Cross-sections for formation of 99mTc through nat- 3270200100003 Ru(n,x)99mTc reaction induced by neutrons at 13.5 and 3270200100004 14.8 MeV 3270200100005 AUTHOR (Junhua Luo,Jiuning Han,Fei Tuo,Xiangzhong Kong, 3270200100006 Rong Liu,Li Jiang) 3270200100007 INSTITUTE (3CPRHXU) School of Physics and Electromechanical 3270200100008 Engineering; 3270200100009 (3CPRLNZ) School of Nuclear Science and Technology; 3270200100010 (3CPRNPC) 3270200100011 REFERENCE (J,IPC,81,(5),495,2012) 3270200100012 #doi:10.1016/j.radphyschem.2012.01.016 3270200100013 FACILITY (NGEN,3CPRNPC) Irradiation of the samples was carried 3270200100014 out at the K-400 Neutron Generator. 3270200100015 SAMPLE About 5 gram of Ru powder of natural isotope 3270200100016 composition (99.99% purity) was pressed at 10 t/cm2, 3270200100017 and a pellet, 0.2 cm thick and 2.0 cm in diameter. 3270200100018 Monitor foils of Al (99.999% pure, 0.04 mm thick) of 3270200100019 the same diameter as the pellets were then attached 3270200100020 in front and at the back of each sample. 3270200100021 DETECTOR (HPGE) The crystal geometry is 70.1 x 72.3 mm in 3270200100022 diameter and length. The relative efficiency is about 3270200100023 68%, and energy resolution is 1.69 keV at 1332 keV 3270200100024 gamma ray from Co-60. 3270200100025 METHOD (ACTIV) Irradiation of the samples was lasted 128 min 3270200100026 with a yield ~4E10 to 5E10 n/s. 3270200100027 MONITOR (13-AL-27(N,A)11-NA-24,,SIG) 3270200100028 DECAY-MON (11-NA-24,14.959HR,DG,1368.6,1.00) 3270200100029 MONIT-REF (,M.Wagner+,B,PH-DAT,13-5,1990) The cross section of 3270200100030 monitor reaction was determined by interpolation of the3270200100031 evaluated values from reference. 3270200100032 INC-SOURCE (D-T) The tritium-titanium (T-Ti) target used in the 3270200100033 generator was 2.18 mg/cm2 thick. 3270200100034 ERR-ANALYS (ERR-T) Total uncertainty of measurement. 3270200100035 (ERR-S,1.,8.) Counting statistics is between 1-8%. 3270200100036 (ERR-1) The uncertainty of weight of sample is 0.1%. 3270200100037 (ERR-2) The uncertainty of self-absorption of 3270200100038 gamma-ray is 0.5%. 3270200100039 (ERR-3,2.,3.) The uncertainty of detector efficiency 3270200100040 is between 2% and 3%. 3270200100041 (ERR-4,0.1,1.) Uncertainties of irradiation, cooling 3270200100042 and measuring times is between 0.1% and 1.0%. 3270200100043 (MONIT-ERR) The uncertainty of monitor cross section. 3270200100044 CORRECTION The data for nat-Ru(n,x)99mTc reaction cross sections 3270200100045 were corrected for the measured contributions of the 3270200100046 102Ru(n,a)99Mo. 3270200100047 STATUS (TABLE) All measured reactions data and monitor 3270200100048 reaction data are taken from Table 2 at page 497 in 3270200100049 J,IPC,81,495,2012. 3270200100050 HISTORY (20120820C) Compiled by Youxiang ZHUANG and Guochang 3270200100051 CHEN (CNDC). 3270200100052 ENDBIB 50 0 3270200100053 COMMON 2 3 3270200100054 ERR-1 ERR-2 3270200100055 PER-CENT PER-CENT 3270200100056 0.1 0.5 3270200100057 ENDCOMMON 3 0 3270200100058 ENDSUBENT 57 0 3270200199999 SUBENT 32702002 20120820 20121214 3270200200001 BIB 2 3 3270200200002 REACTION (44-RU-0(N,X)43-TC-99-M,IND,SIG) 3270200200003 DECAY-DATA (43-TC-99-M,6.01HR,DG,140.511,0.8906) 3270200200004 (42-MO-99,65.94HR,DG,739.5,0.121) 3270200200005 ENDBIB 3 0 3270200200006 NOCOMMON 0 0 3270200200007 DATA 6 2 3270200200008 EN EN-ERR DATA ERR-T MONIT MONIT-ERR 3270200200009 MEV MEV MB MB MB MB 3270200200010 13.5 0.2 9.6 1.5 125.7 0.8 3270200200011 14.8 0.2 9.2 1.1 111.9 0.5 3270200200012 ENDDATA 4 0 3270200200013 ENDSUBENT 12 0 3270200299999 ENDENTRY 2 0 3270299999999