ENTRY 33136 20200312 31953313600000001 SUBENT 33136001 20200312 31953313600100001 BIB 7 19 3313600100002 TITLE Measurement and covariance analysis of 232Th(n,2n) 3313600100003 231Th reaction cross section 3313600100004 AUTHOR (M.Karkera, S.S.Yerraguntla, S.Punchithaya, 3313600100005 S.V.Suryanarayana, M.P.Karantha, H.Naik, S.Ganesan, 3313600100006 L.S.Dhanu, R.Kumar, K.Deo, D.Raj, T.Patel, S.Bishnoi, 3313600100007 U.Kannan) 3313600100008 INSTITUTE (3INDMNP,3INDTRM) 3313600100009 (3INDIND) National Institute of Technology Karnataka, 3313600100010 Surathkal 3313600100011 REFERENCE (J,JRN,322,817,2019) 3313600100012 DETECTOR (HPGE) A pre-calibrated 80-cc HPGe detector was 3313600100013 coupled to a PC-based 4096 channel analyzer. 3313600100014 The resolution of the HPGe detector has a FWHM of 3313600100015 1.8 keV at 1332.5 keV gamma-ray peak of 60Co. 3313600100016 The counting dead time was always kept less than 5%. 3313600100017 STATUS (TABLE) Table 8 of J. Radioanal. Nucl. Chem. 322 (2019)3313600100018 817 3313600100019 HISTORY (20200305C) Imranpasha 3313600100020 (20200312A) Vidya+On. Finalized. 3313600100021 ENDBIB 19 0 3313600100022 NOCOMMON 0 0 3313600100023 ENDSUBENT 22 0 3313600199999 SUBENT 33136002 20200312 31953313600200001 BIB 11 45 3313600200002 REACTION (90-TH-232(N,2N)90-TH-231,,SIG) 3313600200003 DECAY-DATA (90-TH-231,24.52HR,DG,84.21,0.066) 3313600200004 MONITOR ((MONIT1)90-TH-232(N,F),,SIG) 3313600200005 ((MONIT2)90-TH-232(N,F)40-ZR-97,CUM,FY) 3313600200006 DECAY-MON (40-ZR-97,16.749HR,DG,743.3,0.9309) 3313600200007 MONIT-REF (,M.B.Chadwick+,J,NDS,112,2887,2011) 3313600200008 FACILITY (VDGT,3INDTRM) 14 UD BARC-TIFR Pelletron facility. 3313600200009 INC-SOURCE (P-LI7) Natural lithium foil of thickness 3.7 mg/cm2 3313600200010 sandwiched between two Ta foils. 3313600200011 The front tantalum foil facing the proton beam was 3313600200012 3.9 mg/cm2 thick. The back tantalum foil of thickness 3313600200013 41 mg/cm2 was used to stop the proton beam. 3313600200014 The protons current during the irradiation were 55, 90 3313600200015 and 150 nA corresponding to the proton energies of 13, 3313600200016 17 and 21 MeV, respectively. 3313600200017 SAMPLE Thorium metal foils of weighing 211.3, 216.6 and 3313600200018 246.8 mg were wrapped with 0.025 mm thick super pure 3313600200019 Al foil. 3313600200020 METHOD (ACTIV,STTA) The samples were irradiated for the 3313600200021 duration 33,000, 38,400 and 18,000 sec and cooled 3313600200022 for 237,520, 129,743, 110,580 sec. 3313600200023 ERR-ANALYS Tables revised from Table. 6 and 7 of J.Radioanal. 3313600200024 Nucl. Chem.322(2019)817 considering cancellation of 3313600200025 six partial uncertainties (weight, atomic mass, area) 3313600200026 were received from Meghna Karkera (2020-03-17), and 3313600200027 adopted in this EXFOR entry. 3313600200028 (ERR-T) Total uncertainty propagated from 3313600200029 (MONIT1-ERR) Monitor cross-section 3313600200030 (MONIT2-ERR) Monitor fission yield 3313600200031 (ERR-1) Gamma-ray peak counts, 231Th 3313600200032 (ERR-2) Decay constant, 231Th 3313600200033 (ERR-6) Gamma-ray abundance, 231Th 3313600200034 (ERR-7) Efficiency of detector, 231Th 3313600200035 (ERR-8) Gamma-ray attenuation coefficient, 97Zr 3313600200036 (ERR-10) Gamma-ray photo-peak counts, 97Zr 3313600200037 (ERR-11) Decay constant, 97Zr 3313600200038 (ERR-14) Gamma-ray abundance, 97Zr 3313600200039 (ERR-15) Efficiency of detector, 97Zr 3313600200040 (ERR-16) Gamma-ray attenuation coefficient, 231Th 3313600200041 COVARIANCE (XY,3,EN,MEV) 3313600200042 10.49 14.46 18.36 3313600200043 (Z,6,COR,NO-DIM) 3313600200044 1. 3313600200045 0.44 1. 3313600200046 0.45 0.57 1. 3313600200047 ENDBIB 45 0 3313600200048 COMMON 2 3 3313600200049 MONIT2 MONIT2-ERR 3313600200050 PC/FIS PC/FIS 3313600200051 3.358 0.134 3313600200052 ENDCOMMON 3 0 3313600200053 DATA 16 3 3313600200054 EN EN-RSL-HW DATA ERR-T MONIT1 MONIT1-ERR 3313600200055 ERR-1 ERR-2 ERR-6 ERR-7 ERR-8 ERR-10 3313600200056 ERR-11 ERR-14 ERR-15 ERR-16 3313600200057 MEV MEV B B B B 3313600200058 B B B B B B 3313600200059 B B B B 3313600200060 10.49 0.29 2.16 0.28 0.310 0.007 3313600200061 3.29E-02 7.83E-04 1.31E-01 2.37E-02 1.66E-03 2.25E-013313600200062 7.85E-04 3.72E-03 2.32E-02 3.27E-02 3313600200063 14.46 0.26 1.08 0.11 0.370 0.009 3313600200064 1.58E-02 5.53E-05 6.58E-02 1.19E-02 6.86E-04 7.19E-023313600200065 3.81E-04 1.87E-03 1.17E-02 1.42E-02 3313600200066 18.36 0.24 0.45 0.05 0.480 0.011 3313600200067 5.96E-03 -1.53E-05 2.75E-02 4.97E-03 3.25E-04 2.69E-023313600200068 1.81E-04 7.79E-04 4.87E-03 6.52E-03 3313600200069 ENDDATA 15 0 3313600200070 ENDSUBENT 69 0 3313600299999 SUBENT 33136003 20200312 31953313600300001 BIB 9 33 3313600300002 REACTION (90-TH-232(N,2N)90-TH-231,,SIG) 3313600300003 DECAY-DATA (90-TH-231,24.52HR,DG,84.21,0.066) 3313600300004 MONITOR (49-IN-115(N,INL)49-IN-115-M,,SIG) 3313600300005 DECAY-MON (49-IN-115-M,4.48HR,DG,336.2,0.459) 3313600300006 FACILITY (CCW,3INDTRM) Purnima neutron generator 3313600300007 INC-SOURCE (D-T) 3313600300008 SAMPLE Thorium (150.1 mg) and indium (250.0 mg) foils of 3313600300009 thickness 0.017 mg/cm2 and 0.068 mg/cm2 are wrapped 3313600300010 with 0.025 mm thick super pure Al foil. 3313600300011 (49-IN-115,NAT=0.95) 3313600300012 METHOD (ACTIV,STTA) Stack of Al-wrapped Th and In metal 3313600300013 foils were irradiated together for 5850 sec. 3313600300014 The cooling time for irradiated Th and In foils are 3313600300015 73,937.0 sec and 63,872 sec, respectively. 3313600300016 ERR-ANALYS (ERR-T) Total uncertainty propagated from 3313600300017 (MONIT-ERR) Monitor cross-section 3313600300018 (ERR-1) Gamma-ray peak counts, Th 3313600300019 (ERR-2) Decay constant, Th 3313600300020 (ERR-3) Atomic mass, Th 3313600300021 (ERR-4) Isotopic abundance of monitor, In 3313600300022 (ERR-5) Weight of sample, Th 3313600300023 (ERR-6) Gamma-ray abundance, Th 3313600300024 (ERR-7) Efficiency of detector, Th 3313600300025 (ERR-8) Gamma-ray attenuation coefficient, In 3313600300026 (ERR-9) Area of monitor, In 3313600300027 (ERR-10) Gamma-ray photo-peak counts, In 3313600300028 (ERR-11) Decay constant, In 3313600300029 (ERR-12) Atomic mass, In 3313600300030 (ERR-13) Weight of monitor, In 3313600300031 (ERR-14) Gamma-ray abundance, In 3313600300032 (ERR-15) Efficiency of detector, In 3313600300033 (ERR-16) Gamma-ray attenuation coefficient, Th 3313600300034 (ERR-17) Area of sample, Th 3313600300035 ENDBIB 33 0 3313600300036 COMMON 17 9 3313600300037 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 ERR-6 3313600300038 ERR-7 ERR-8 ERR-9 ERR-10 ERR-11 ERR-12 3313600300039 ERR-13 ERR-14 ERR-15 ERR-16 ERR-17 3313600300040 B B B B B B 3313600300041 B B B B B B 3313600300042 B B B B B 3313600300043 6.49E-02 -1.61E-04 6.83E-09 5.43E-04 4.00E-04 6.30E-023313600300044 1.39E-02 1.82E-03 2.83E-02 7.00E-02 3.93E-04 1.09E-103313600300045 2.40E-04 2.26E-03 1.93E-02 5.22E-02 2.83E-02 3313600300046 ENDCOMMON 9 0 3313600300047 DATA 6 1 3313600300048 EN EN-RSL-HW DATA ERR-T MONIT MONIT-ERR 3313600300049 MEV MEV B B B B 3313600300050 15.03 0.003 1.04 0.14 0.058 0.002 3313600300051 ENDDATA 3 0 3313600300052 ENDSUBENT 51 0 3313600399999 ENDENTRY 3 0 3313699999999