ENTRY 31661 20090212 31333166100000001 SUBENT 31661001 20090212 31333166100100001 BIB 14 66 3166100100002 TITLE Activation cross sections for 190Os(n,p)190m,gRe, 3166100100003 188Os(n,p)188Re and 190Os(n,n')190mOs reactions 3166100100004 from 13.5 to 14.8 MeV 3166100100005 AUTHOR (Junhua Luo,Zhirong Zhang,Weisong Tian,Fei Tuo, 3166100100006 Xiangzhong Kong,Rong Liu,Li Jiang) 3166100100007 INSTITUTE (3CPRLNZ,3CPRNPC) 3166100100008 (3CPRCPR) Department of Physics, Hexi University, 3166100100009 Zhangye 734000, China National Institute for 3166100100010 Radiological Protection, China CDC, Beijing 100088, 3166100100011 China 3166100100012 REFERENCE (J,NIM/B,267,1051,2009) 3166100100013 FACILITY (LINAC,3CPRNPC) the K-400 Neutron Generator at 3166100100014 Chinese Academy of Engineering Physics (CAEP) and 3166100100015 lasted 2 to 3 h with a yield ~4 to 5 x 10**10 n/s. 3166100100016 SAMPLE About 6 g of Os powder of natural isotopic 3166100100017 composition (99.95% pure) was pressed at 10 ton/cm2, 3166100100018 and a pellet, 0.2 cm thick and 2.0 cm in diameter, 3166100100019 was obtained. Two such pellets were prepared. 3166100100020 Monitor foils of Nb (99.99% pure, 0.2 mm thick) of 3166100100021 the same diameter as the pellets were then attached 3166100100022 in the front and at the back of each sample. 3166100100023 INC-SOURCE (D-T) Neutrons were produced by the T(d,n)4He reaction 3166100100024 with an effective deuteron beam energy of 134 keV and 3166100100025 beam current of 230 mu-A. The tritium-titanium (T-Ti) 3166100100026 target used in the generator was 2.18 mg/cm2 thick. 3166100100027 The neutron flux was monitored by a uranium fission 3166100100028 chamber so that corrections could be made for small 3166100100029 variations in the yield. 3166100100030 MONITOR (41-NB-93(N,2N)41-NB-92-M,,SIG) Cross sections for 3166100100031 93Nb(n,2n)92mNb reaction were selected as monitors to 3166100100032 measure the reaction cross section on several Os 3166100100033 isotopes. 3166100100034 The neutron energies in these measurements were 3166100100035 determined by cross section ratios for the 3166100100036 90Zr(n,2n)89m+gZr and 93Nb(n,2n)92mNb reactions 3166100100037 (40-ZR-90(N,2N)40-ZR-89,,SIG) 3166100100038 DECAY-MON (41-NB-92-M,10.15D,DG,934.43,0.9907) 3166100100039 MONIT-REF (,M.Wagner,B,PH-DAT,13-5,1990) - cross sections for 3166100100040 normalization. 3166100100041 (,V.E.Lewis,J,NIM,174,141,1980) The neutron energies 3166100100042 were determined. 3166100100043 DETECTOR (HPGE) a high-purity germanium (HPGe) detector (ORTEC, 3166100100044 model GEM 60P, Crystal diameter: 70.1 mm, Crystal 3166100100045 length: 72.3 mm) with a relative efficiency of ~68 % 3166100100046 and an energy resolution of 1.69 keV at1332 keV for 3166100100047 60Co. The efficiency of the detector was pre-calibrated3166100100048 using various standard gamma-sources. 3166100100049 ERR-ANALYS (ERR-T) The main error sources are: 3166100100050 (ERR-1) standard cross sections uncertainties (2%), 3166100100051 (ERR-2) weight of samples (0.1%), 3166100100052 (ERR-3) self-absorption of gamma-ray (0.5%), 3166100100053 * counting statistics (0.1-15%), 3166100100054 * detector efficiency (2-3%), 3166100100055 * the coincidence sum effect of cascade gamma-rays 3166100100056 (0.0-5%), the uncertainties of irradiation, 3166100100057 * cooling and measuring times (0.1-1%), etc. 3166100100058 Some other minor error contribution from the parameters3166100100059 of the measured and standard nuclei, such as, 3166100100060 uncertainties of the branching ratio of the 3166100100061 characteristic gamma rays, uncertainties of the half 3166100100062 life of the radioactive product nuclei and so on, 3166100100063 have also been considered. 3166100100064 (EN-ERR) scale uncertainty 3166100100065 STATUS (TABLE) Data are from the tables of the ref. 3166100100066 (APRVD) Entry approved by Dr. Junhua Luo 3166100100067 HISTORY (20090212C) SD 3166100100068 ENDBIB 66 0 3166100100069 COMMON 4 3 3166100100070 ERR-1 ERR-2 ERR-3 EN-ERR 3166100100071 PER-CENT PER-CENT PER-CENT MEV 3166100100072 2.0 0.1 0.5 0.2 3166100100073 ENDCOMMON 3 0 3166100100074 ENDSUBENT 73 0 3166100199999 SUBENT 31661002 20090212 31333166100200001 BIB 2 4 3166100200002 REACTION (76-OS-190(N,P)75-RE-190-M,,SIG) 3166100200003 DECAY-DATA (75-RE-190-M,3.2HR,DG,186.718,0.278, 3166100200004 DG,557.972,0.143, 3166100200005 DG,605.24,0.149) 3166100200006 ENDBIB 4 0 3166100200007 COMMON 1 3 3166100200008 ERR-T 3166100200009 MB 3166100200010 0.03 3166100200011 ENDCOMMON 3 0 3166100200012 DATA 4 2 3166100200013 EN DATA MONIT MONIT-ERR 3166100200014 MEV MB MB MB 3166100200015 13.5 0.45 457.9 6.8 3166100200016 14.8 0.18 459.7 5.0 3166100200017 ENDDATA 4 0 3166100200018 ENDSUBENT 17 0 3166100299999 SUBENT 31661003 20090212 31333166100300001 BIB 2 4 3166100300002 REACTION (76-OS-190(N,P)75-RE-190-G,,SIG) 3166100300003 DECAY-DATA (75-RE-190-G,3.1MIN,DG,569.310,0.251, 3166100300004 DG,186.68,0.484, 3166100300005 DG,828.96,0.229) 3166100300006 ENDBIB 4 0 3166100300007 NOCOMMON 0 0 3166100300008 DATA 5 2 3166100300009 EN DATA ERR-T MONIT MONIT-ERR 3166100300010 MEV MB MB MB MB 3166100300011 13.5 1.5 0.4 457.9 6.8 3166100300012 14.8 2.6 0.3 459.7 5.0 3166100300013 ENDDATA 4 0 3166100300014 ENDSUBENT 13 0 3166100399999 SUBENT 31661004 20090212 31333166100400001 BIB 2 4 3166100400002 REACTION (76-OS-188(N,P)75-RE-188,,SIG) 3166100400003 DECAY-DATA (75-RE-188,16.98HR,DG,155.032,0.149, 3166100400004 DG,632.99,0.0125, 3166100400005 DG,477.99,1.0) 3166100400006 ENDBIB 4 0 3166100400007 NOCOMMON 0 0 3166100400008 DATA 5 2 3166100400009 EN DATA ERR-T MONIT MONIT-ERR 3166100400010 MEV MB MB MB MB 3166100400011 13.5 1.5 0.2 457.9 6.8 3166100400012 14.8 2.6 0.3 459.7 5.0 3166100400013 ENDDATA 4 0 3166100400014 ENDSUBENT 13 0 3166100499999 SUBENT 31661005 20090212 31333166100500001 BIB 2 5 3166100500002 REACTION (76-OS-190(N,INL)76-OS-190-M,,SIG) 3166100500003 DECAY-DATA (76-OS-190-M,9.9MIN,DG,361.2,0.9488, 3166100500004 DG,186.7,0.702, 3166100500005 DG,502.5,0.9779, 3166100500006 DG,616.5,0.9862) 3166100500007 ENDBIB 5 0 3166100500008 NOCOMMON 0 0 3166100500009 DATA 5 2 3166100500010 EN DATA ERR-T MONIT MONIT-ERR 3166100500011 MEV MB MB MB MB 3166100500012 13.5 9.7 0.8 457.9 6.8 3166100500013 14.8 9.2 0.7 459.7 5.0 3166100500014 ENDDATA 4 0 3166100500015 ENDSUBENT 14 0 3166100599999 ENDENTRY 5 0 3166199999999