ENTRY 31613 20080911 31313161300000001 SUBENT 31613001 20080911 31313161300100001 BIB 11 36 3161300100002 TITLE Measurement of neutron capture cross sections for 3161300100003 141Pr from 0.5 to 1.6 MeV 3161300100004 AUTHOR (P.Zhu,Z.Yuan,J.Chen,Z.Liu,G.Zhang,Z.Shi,H.Lu) 3161300100005 INSTITUTE (3CPRBJG,3CPRAEP) 3161300100006 REFERENCE (J,ARI,65,1314,2007) 3161300100007 FACILITY (VDG,3CPRBJG) 3161300100008 INC-SOURCE (P-T) The monoenergetic neutrons with energies of 0.54,3161300100009 1.09 and 1.59 MeV were produced via the T(p,n)3He 3161300100010 reaction on a solid T-Ti target of 1.7 mg/cm2 in 3161300100011 thickness. 3161300100012 SAMPLE The samples were made from Pr6O11 powder (99.9% pure) 3161300100013 by pressing into disks of 20 mm in diam. and about 3161300100014 1.5mm in thickness (about 388.9, 396.4 and 441.1mg/cm2,3161300100015 respectively). The mass of the samples was determined 3161300100016 by weighing. Each sample was sandwiched between two 3161300100017 gold disks with the same diameter. The purity 99.9% 3161300100018 gold disks each of 0.1 mm in thickness were used to 3161300100019 measure the neutron flux on the sample. 3161300100020 The sample groups were wrapped with cadmium foils of 3161300100021 0.5mm in thickness. 3161300100022 METHOD (STTA,GSPEC,ACTIV) 3161300100023 DETECTOR (HPGE) HPGe gamma-detector (105 cm3). The efficiency 3161300100024 of the detector was calibrated by using a set of 3161300100025 standard gamma-ray sources in the energy range of 3161300100026 0.1-1.5MeV and the efficiency curve was fitted with 3161300100027 the least-square method. The gamma-detection efficiency3161300100028 for 198Au was obtained from this efficiency curve. For 3161300100029 the decay of 142Pr, the dominant gamma-ray is 3161300100030 1575.83 keV. 3161300100031 (BF3) The neutrons flux was monitored by a BF3 long 3161300100032 counter placed at 0 degr. 3161300100033 STATUS (TABLE) Table 2 of the reference 3161300100034 (APRVD) Entry approved by J.X.Chen. 3161300100035 Correction approved by J.X.Chen (2008-09-12) 3161300100036 HISTORY (20080715C) SD + LV 3161300100037 (20080911A) On. 002 deleted (not authors' data) 3161300100038 ENDBIB 36 0 3161300100039 NOCOMMON 0 0 3161300100040 ENDSUBENT 39 0 3161300199999 NOSUBENT 31613002 20080911 31313161300200001 SUBENT 31613003 20080911 31313161300300001 BIB 7 25 3161300300002 REACTION (59-PR-141(N,G)59-PR-142,,SIG) 3161300300003 DECAY-DATA (59-PR-142,19.12HR,DG,1575.83,0.037, 3161300300004 DG,508.8,0.000228) 3161300300005 MONITOR (79-AU-197(N,G)79-AU-198,,SIG) 3161300300006 MONIT-REF - This monitor cross section is not from ENDF-B/VI, 3161300300007 but from private communication with Hanlin Lu (CIAE).3161300300008 (J.X.Chen, 2008-09-11) 3161300300009 - This monitor cross section is close to the 3161300300010 ENDF/B-VII.0 standard cross section. 3161300300011 (V.Pronyaev, 2008-09-10) 3161300300012 DECAY-MON ((MONIT)79-AU-198,64.704HR,DG,411.804,0.9557) 3161300300013 ERR-ANALYS (EN-ERR) Uncertainty in the incident energy 3161300300014 (ERR-T) Total uncertainty. Main sources are 3161300300015 - gamma counting statistics for 198Au (0.8%) 3161300300016 - gamma counting statistics for 142Pr (1.0%) 3161300300017 (ERR-1) - 197Au sample nuclei number 3161300300018 (ERR-2) - 141Pr sample nuclei number 3161300300019 (ERR-3) - gamma detection efficiency (198Au) 3161300300020 (ERR-4) - gamma detection efficiency (142Pr) 3161300300021 (ERR-5) - gamma-ray self absorption correction (Au) 3161300300022 (ERR-6) - gamma-ray self absorption correction (Pr) 3161300300023 (ERR-7) - Fluctuation correction of neutron flux (Au)3161300300024 (ERR-8) - Fluctuation correction of neutron flux (Pr)3161300300025 (MONIT-ERR) Monitor cross section 3161300300026 HISTORY (20080911A) On. Some partial uncertainties added 3161300300027 ENDBIB 25 0 3161300300028 COMMON 8 6 3161300300029 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 3161300300030 ERR-7 ERR-8 3161300300031 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3161300300032 PER-CENT PER-CENT 3161300300033 0.1 0.07 1.0 1.0 0.4 0.6 3161300300034 0.02 0.06 3161300300035 ENDCOMMON 6 0 3161300300036 DATA 6 3 3161300300037 EN EN-ERR DATA ERR-T MONIT MONIT-ERR 3161300300038 MEV MEV MB MB MB PER-CENT 3161300300039 0.54 0.03 18.92 1.13 124.7 4.5 3161300300040 1.09 0.03 20.93 1.26 78.8 3.5 3161300300041 1.59 0.04 18.94 1.33 68.1 3.0 3161300300042 ENDDATA 5 0 3161300300043 ENDSUBENT 42 0 3161300399999 ENDENTRY 3 0 3161399999999