ENTRY 33115 20191209 31933311500000001 SUBENT 33115001 20191209 31933311500100001 BIB 17 58 3311500100002 TITLE Measurement and covariance analysis of 232Th(n,2n)231Th3311500100003 reaction cross sections at the effective neutron 3311500100004 energies of 8.97 and 16.52 MeV 3311500100005 AUTHOR (M.Karkera, H.Naik, S.Punchithaya, M.Prasad, 3311500100006 S.S.Yeraguntla, S.V.Suryanarayana, S.Ganesan, 3311500100007 V.Vansola, R.Makhwana) 3311500100008 INSTITUTE (3INDMNP,3INDTRM,3INDBDA) 3311500100009 (3INDIND) National Institute of Engineering, Mysuru 3311500100010 REFERENCE (J,JRN,318,1893,2018) 3311500100011 FACILITY (VDGT,3INDTRM) 14 UD BARC-TIFR Pelletron facility 3311500100012 SAMPLE Two thorium metal foils of purity more than 99.99% 3311500100013 weighing 0.9005+/-0.0003 and 0.3955+/-0.0003 g were 3311500100014 wrapped with 0.025 mm thick Al foil. 3311500100015 DETECTOR (HPGE) A pre-calibrated 80-cc HPGe detector was 3311500100016 coupled to a PC-based 4096 channel analyzer. 3311500100017 METHOD (ACTIV,STTA) The irradiated foils of thorium from two 3311500100018 stacks were cooled for 34.96 and 69.1 hours, 3311500100019 respectively. 3311500100020 INC-SOURCE (P-LI7) Natural lithium foil of thickness 7.8 mg/cm2 3311500100021 sandwiched between two Ta foils. 3311500100022 The front tantalum foil facing the proton beam was 3311500100023 3.2 mg/cm2 thick. The back tantalum foil of thickness 3311500100024 41 mg/cm2 was used to stop the proton beam. 3311500100025 MONITOR ((MONIT1)90-TH-232(N,F),,SIG,,SPA) 3311500100026 ((MONIT2)90-TH-232(N,F)40-ZR-97,CUM,FY) 3311500100027 DECAY-MON (40-ZR-97,16.749HR,DG,743.3,0.9309) 3311500100028 MONIT-REF (,M.B.Chadwick+,J,NDS,112,2887,2011) 3311500100029 ERR-ANALYS (ERR-T) Total uncertainty 3311500100030 (ERR-1,,,U) Photo-peak counts of gamma-ray (231Th) 3311500100031 (ERR-2,,,F) Decay Constant (231Th) 3311500100032 (ERR-3,,,F) Average atomic mass (232Th) 3311500100033 (ERR-4,,,U) Weight of sample (232Th) 3311500100034 (ERR-5,,,F) Gamma ray abundance (231Th) 3311500100035 (ERR-6,,,F) Efficiency of detector (231Th) 3311500100036 (MONIT1-ERR,,,P) 232Th(n,f) cross section 3311500100037 (MONIT2-ERR,,,U) 232Th(n,f)97Zr yield 3311500100038 (ERR-7,,,U) Gamma attenuation coefficient (97Zr) 3311500100039 (ERR-8,,,U) Photo-peak counts of gamma-ray (97Zr) 3311500100040 (ERR-9,,,F) Decay constant (97Zr) 3311500100041 (ERR-10,,,F) Average atomic mass (232Th) 3311500100042 (ERR-11,,,U) Weight of sample (232Th) 3311500100043 (ERR-12,,,F) Gamma-ray abundance (97Zr) 3311500100044 (ERR-13,,,F) Efficiency of detector (97Zr) 3311500100045 (ERR-14,,,U) Gamma attenuation coefficient (231Th) 3311500100046 COMMENT By compiler (2019-12-10): 3311500100047 It is not clear why the authors needed to propagate 3311500100048 the uncertainties in the average atomic mass and 3311500100049 sample weight. They are used as the reaction and 3311500100050 monitor samples, and therefore should not contribute 3311500100051 to the uncertainty propagation. 3311500100052 COVARIANCE (XY,2,EN,MEV) 3311500100053 8.97 16.52 3311500100054 (Z,3,COR,NO-DIM)) 3311500100055 1.00 3311500100056 0.37 1.00 3311500100057 STATUS (TABLE) Table 6 of J. Radioanal Nucl. Chem. 318 (2018) 3311500100058 1893 3311500100059 HISTORY (20191209C) Imranpasha 3311500100060 ENDBIB 58 0 3311500100061 COMMON 6 3 3311500100062 ERR-3 ERR-5 ERR-6 ERR-10 ERR-12 ERR-13 3311500100063 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3311500100064 6.6E-07 6.1 6.6 6.6E-07 1.7E-01 1.2 3311500100065 ENDCOMMON 3 0 3311500100066 ENDSUBENT 65 0 3311500199999 SUBENT 33115002 20191209 31933311500200001 BIB 2 2 3311500200002 REACTION (90-TH-232(N,2N)90-TH-231,,SIG) 3311500200003 DECAY-DATA (90-TH-231,24.52HR,DG,84.2,0.066) 3311500200004 ENDBIB 2 0 3311500200005 NOCOMMON 0 0 3311500200006 DATA 16 2 3311500200007 EN EN-RSL-HW DATA ERR-T MONIT1 MONIT1-ERR 3311500200008 MONIT2 MONIT2-ERR ERR-1 ERR-2 ERR-4 ERR-7 3311500200009 ERR-8 ERR-9 ERR-11 ERR-14 3311500200010 MEV MEV B B B PER-CENT 3311500200011 PRD/FIS PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT 3311500200012 PER-CENT PER-CENT PER-CENT PER-CENT 3311500200013 8.97 0.34 1.82 0.27 0.3370 2.2 3311500200014 0.049195 8.0 2.4 6.4E-03 3.2E-02 7.4E-023311500200015 7.1 3.6E-02 3.2E-02 1.5 3311500200016 16.52 0.30 0.62 0.10 0.4613 2.3 3311500200017 0.04495 9.3 3.2 3.7E-02 7.3E-02 1.1E-013311500200018 9.2 9.4E-02 7.3E-02 2.0 3311500200019 ENDDATA 12 0 3311500200020 ENDSUBENT 19 0 3311500299999 ENDENTRY 2 0 3311599999999