ENTRY 32727 20161004 31763272700000001 SUBENT 32727001 20161004 31763272700100001 BIB 16 58 3272700100002 TITLE Cross sections for fast-neutron interaction with 3272700100003 ytterbium isotopes 3272700100004 AUTHOR (Junhua Luo,Rong Liu,Li Jiang,Suhong Ge,Zhenlai Liu, 3272700100005 Guihua Sun) 3272700100006 INSTITUTE (3CPRHXU,3CPRBJG,3CPRNPC) 3272700100007 REFERENCE (J,ANE,57,41,2013) 3272700100008 #doi:10.1016/j.anucene.2013.01.050 3272700100009 FACILITY (NGEN,3CPRNPC) Pd-300 Neutron Generator 3272700100010 SAMPLE About 8 gram of Yb2O3 powder of natural isotopic 3272700100011 composition (>99.99% pure) was pressed at 10 ton/cm2, 3272700100012 and 2.0 cm in diameter. The thickness of samples was 3272700100013 3.320 mm and 3.680 mm. Monitor foils of Nb (99.99% 3272700100014 pure, 0.20 mm thick) and Al (99.999% pure, 0.04 mm 3272700100015 thick) of the same diameter as the pellets were then 3272700100016 attached in front and at the back of each sample. 3272700100017 DETECTOR (HPGE) The relative efficiency is about 68%, and 3272700100018 energy resolution is 1.69 keV at 1332 keV gamma ray 3272700100019 from Co-60. 3272700100020 (FISCH) The neutron flux was monitored by a uranium 3272700100021 fission chamber. 3272700100022 METHOD (ACTIV) Irradiation of the samples was lasted about 2 3272700100023 hours with a yield around 3E10 to 4E10 n/(4pi*s). The 3272700100024 groups of samples were wrapped in cadmium foil and 3272700100025 placed at 0deg. and 135deg. angles relative to the 3272700100026 beam direction and centered about the T-Ti target at 3272700100027 distances of around 3~5 cm. 3272700100028 MONITOR ((MONIT1)13-AL-27(N,A)11-NA-24,,SIG) 3272700100029 ((MONIT2)41-NB-93(N,2N)41-NB-92-M,,SIG) 3272700100030 DECAY-MON ((MONIT1)11-NA-24,14.959HR,DG,1368.6,1.00) 3272700100031 ((MONIT2)41-NB-92-M,10.15D,DG,934.43,0.9907) 3272700100032 MONIT-REF (,M.Wagner+,B,PH-DAT,13-5,1990) 3272700100033 INC-SOURCE (D-T) An effective deuteron beam energy of 125 keV 3272700100034 and beam current of 200 uA were used to produce 3272700100035 neutrons. The tritium-titanium (T-Ti) target used in 3272700100036 the generator was 2.38 mg/cm2 thick. 3272700100037 ERR-ANALYS (ERR-T) Total uncertainty 3272700100038 (ERR-S,0.1,38.0) Counting statistics 3272700100039 (ERR-1,1.2,7.7) Isotopic abundance 3272700100040 (ERR-2,2.0,3.0) Detector efficiency 3272700100041 (ERR-3) Weight of samples(0.1%) 3272700100042 (ERR-4) Self-absorption of gamma-ray (~0.5%) 3272700100043 (ERR-5,0.7,5.0) Relative gamma-ray intensity 3272700100044 (ERR-6,0.02,5.3) The half-life of the radioactive 3272700100045 product nuclei 3272700100046 (ERR-7,0.,5.0) Coincidence sum effect of cascade 3272700100047 gamma-rays 3272700100048 (ERR-8,0.1,1.0) Uncertainties of irradiation, cooling 3272700100049 and measuring times 3272700100050 (MONIT1-ERR) 27Al(n,a)24Na standard cross section 3272700100051 (MONIT2-ERR) 93Nb(n,2n)92mNb standard cross section 3272700100052 CORRECTION Measurements were corrected for gamma-ray 3272700100053 attenuations, self-absorption of the sample, the 3272700100054 neutron fluence fluctuation, the coincidence sum 3272700100055 effect of cascade gamma-rays in the investigated 3272700100056 nuclide and in the counting geometry. 3272700100057 STATUS (TABLE) All measured reactions data are taken from 3272700100058 Table 3 at page 44 in J,ANE,57,2013. 3272700100059 HISTORY (20161004C) Compiled by Chen Guochang (CNDC) 3272700100060 ENDBIB 58 0 3272700100061 COMMON 2 3 3272700100062 ERR-3 ERR-4 3272700100063 PER-CENT PER-CENT 3272700100064 0.1 0.5 3272700100065 ENDCOMMON 3 0 3272700100066 ENDSUBENT 65 0 3272700199999 SUBENT 32727002 20161004 31763272700200001 BIB 3 3 3272700200002 REACTION (70-YB-168(N,2N)70-YB-167,,SIG) 3272700200003 DECAY-DATA (70-YB-167,17.5MIN,DG,113.34,0.554) 3272700200004 SAMPLE (70-YB-168,NAT=0.0013) 3272700200005 ENDBIB 3 0 3272700200006 NOCOMMON 0 0 3272700200007 DATA 8 2 3272700200008 EN EN-ERR DATA ERR-T MONIT1 MONIT1-ERR 3272700200009 MONIT2 MONIT2-ERR 3272700200010 MEV MEV MB MB MB MB 3272700200011 MB MB 3272700200012 13.5 0.2 1664. 148. 125.7 0.83272700200013 457.9 6.8 3272700200014 14.8 0.2 1914. 169. 111.9 0.53272700200015 459.7 5.0 3272700200016 ENDDATA 8 0 3272700200017 ENDSUBENT 16 0 3272700299999 SUBENT 32727003 20161004 31763272700300001 BIB 3 3 3272700300002 REACTION (70-YB-170(N,2N)70-YB-169,,SIG) 3272700300003 DECAY-DATA (70-YB-169-G,32.026D,DG,197.96,0.358) 3272700300004 SAMPLE (70-YB-170,NAT=0.0305) 3272700300005 ENDBIB 3 0 3272700300006 NOCOMMON 0 0 3272700300007 DATA 8 2 3272700300008 EN EN-ERR DATA ERR-T MONIT1 MONIT1-ERR 3272700300009 MONIT2 MONIT2-ERR 3272700300010 MEV MEV MB MB MB MB 3272700300011 MB MB 3272700300012 13.5 0.2 2025. 92. 125.7 0.83272700300013 457.9 6.8 3272700300014 14.8 0.2 2138. 100. 111.9 0.53272700300015 459.7 5.0 3272700300016 ENDDATA 8 0 3272700300017 ENDSUBENT 16 0 3272700399999 SUBENT 32727004 20161004 31763272700400001 BIB 3 3 3272700400002 REACTION (70-YB-176(N,2N)70-YB-175,,SIG) 3272700400003 DECAY-DATA (70-YB-175,4.185D,DG,396.3,0.0640) 3272700400004 SAMPLE (70-YB-176,NAT=0.127) 3272700400005 ENDBIB 3 0 3272700400006 NOCOMMON 0 0 3272700400007 DATA 8 2 3272700400008 EN EN-ERR DATA ERR-T MONIT1 MONIT1-ERR 3272700400009 MONIT2 MONIT2-ERR 3272700400010 MEV MEV MB MB MB MB 3272700400011 MB MB 3272700400012 13.5 0.2 2132. 94. 125.7 0.83272700400013 457.9 6.8 3272700400014 14.8 0.2 2071. 92. 111.9 0.53272700400015 459.7 5.0 3272700400016 ENDDATA 8 0 3272700400017 ENDSUBENT 16 0 3272700499999 SUBENT 32727005 20161004 31763272700500001 BIB 3 3 3272700500002 REACTION (70-YB-172(N,P)69-TM-172,,SIG) 3272700500003 DECAY-DATA (69-TM-172,63.6HR,DG,1093.7,0.060) 3272700500004 SAMPLE (70-YB-172,NAT=0.219) 3272700500005 ENDBIB 3 0 3272700500006 NOCOMMON 0 0 3272700500007 DATA 8 2 3272700500008 EN EN-ERR DATA ERR-T MONIT1 MONIT1-ERR 3272700500009 MONIT2 MONIT2-ERR 3272700500010 MEV MEV MB MB MB MB 3272700500011 MB MB 3272700500012 13.5 0.2 3.6 0.8 125.7 0.83272700500013 457.9 6.8 3272700500014 14.8 0.2 4.6 0.9 111.9 0.53272700500015 459.7 5.0 3272700500016 ENDDATA 8 0 3272700500017 ENDSUBENT 16 0 3272700599999 SUBENT 32727006 20161004 31763272700600001 BIB 3 3 3272700600002 REACTION (70-YB-173(N,P)69-TM-173,,SIG) 3272700600003 DECAY-DATA (69-TM-173,8.24HR,DG,398.9,0.879) 3272700600004 SAMPLE (70-YB-173,NAT=0.1612) 3272700600005 ENDBIB 3 0 3272700600006 NOCOMMON 0 0 3272700600007 DATA 8 2 3272700600008 EN EN-ERR DATA ERR-T MONIT1 MONIT1-ERR 3272700600009 MONIT2 MONIT2-ERR 3272700600010 MEV MEV MB MB MB MB 3272700600011 MB MB 3272700600012 13.5 0.2 2.5 0.3 125.7 0.83272700600013 457.9 6.8 3272700600014 14.8 0.2 4.5 0.4 111.9 0.53272700600015 459.7 5.0 3272700600016 ENDDATA 8 0 3272700600017 ENDSUBENT 16 0 3272700699999 SUBENT 32727007 20161004 31763272700700001 BIB 3 3 3272700700002 REACTION (70-YB-174(N,P)69-TM-174,,SIG) 3272700700003 DECAY-DATA (69-TM-174,5.4MIN,DG,176.6,0.662) 3272700700004 SAMPLE (70-YB-174,NAT=0.318) 3272700700005 ENDBIB 3 0 3272700700006 NOCOMMON 0 0 3272700700007 DATA 8 1 3272700700008 EN EN-ERR DATA ERR-T MONIT1 MONIT1-ERR 3272700700009 MONIT2 MONIT2-ERR 3272700700010 MEV MEV MB MB MB MB 3272700700011 MB MB 3272700700012 14.8 0.2 2.6 0.2 111.9 0.53272700700013 459.7 5.0 3272700700014 ENDDATA 6 0 3272700700015 ENDSUBENT 14 0 3272700799999 SUBENT 32727008 20161004 31763272700800001 BIB 3 5 3272700800002 REACTION 1(70-YB-176(N,P)69-TM-176,,SIG) 3272700800003 2(70-YB-176(N,X)69-TM-175,,SIG) 3272700800004 DECAY-DATA1(69-TM-176,1.9MIN,DG,189.57,0.445) 3272700800005 2(69-TM-175,15.2MIN,DG,514.9,0.65) 3272700800006 SAMPLE (70-YB-176,NAT=0.127) 3272700800007 ENDBIB 5 0 3272700800008 NOCOMMON 0 0 3272700800009 DATA 10 2 3272700800010 EN EN-ERR DATA 1ERR-T 1DATA 2ERR-T 23272700800011 MONIT1 MONIT1-ERR MONIT2 MONIT2-ERR 3272700800012 MEV MEV MB MB MB MB 3272700800013 MB MB MB MB 3272700800014 13.5 0.2 0.15 0.063272700800015 125.7 0.8 457.9 6.8 3272700800016 14.8 0.2 6.2 0.9 0.18 0.043272700800017 111.9 0.5 459.7 5.0 3272700800018 ENDDATA 8 0 3272700800019 ENDSUBENT 18 0 3272700899999 ENDENTRY 8 0 3272799999999