ENTRY 23540 20200219 22862354000000001 SUBENT 23540001 20200219 22862354000100001 BIB 15 76 2354000100002 TITLE Thermal (n,gamma) cross section and resonance 2354000100003 integral of 171Tm 2354000100004 AUTHOR (T.Heftrich,M.Weigand,Ch.E.Dullmann,K.Eberhardt, 2354000100005 S.Fiebiger,J.Glorius,K.Gobel,C.Guerrero,R.Haas, 2354000100006 S.Heinitz,J.Lerendegui-Marco,F.Kappeler,J.D.Kaiser, 2354000100007 U.Koster,C.Langer,S.Lohse,F.Ludwig,R.Reifarth, 2354000100008 D.Renisch,K.Scheutwinkel,D.Schumann,N.Wiehl,C.Wolf) 2354000100009 INSTITUTE (2GERFRK,2GERMNZ,2GERGSI,2SPNSEU,2SWTPSI,2GERKFK, 2354000100010 2FR ILL) 2354000100011 (2GERGER) Helmholtz-Institut Mainz, Mainz 2354000100012 REFERENCE (J,PR/C,99,065810,2019) 2354000100013 #doi:10.1103/PhysRevC.99.065810 2354000100014 FACILITY (REAC,2GERMNZ) 2354000100015 INC-SPECT Thermal neutrons reactor neutron spectrum with a 2354000100016 Maxwell-Boltzmann energy distribution at kT = 25.3 meV.2354000100017 The epithermal neutron flux approximated by 1/E. 2354000100018 Neutron fluence (/cm2) 2354000100019 without Cd 2354000100020 thermal(xE14) 9.89 +- 0.25stat +- 0.20sys 2354000100021 epithermal(xE13) 4.46 +- 0.14stat +- 0.14sys 2354000100022 with Cd 2354000100023 thermal(xE14) 1.16 +- 0.11stat +- 0.15sys 2354000100024 epithermal(xE13) 4.31 +- 0.06stat +- 0.11sys 2354000100025 SAMPLE The radioactive 171Tm sample produced via irradiation 2354000100026 of a 170Er sample at the research reactor at ILL, 2354000100027 Grenoble for 55 days. The induced 171Er decay with 2354000100028 T1/2=7.52 h to 171Tm. The 171Tm extracted by a chemical2354000100029 separation was performed at the Paul-Scherrer-Institut.2354000100030 the number of 171Tm nuclei determined by 67 keV 2354000100031 gamma-ray measurements considering T1/2(171Tm)=1.92 yr 2354000100032 and Ig(67 keV)=0.155 2354000100033 Number of 171Tm nuclei on 20 March 2017 = 2354000100034 (2.68 +- 0.01st +- 0.09sys)E15 2354000100035 METHOD Cadmium difference method using 1 mm Cd shielding. 2354000100036 (ACTIV) Two 10 minute irradiations. The first run with 2354000100037 and the second one without shielding. Time between 2354000100038 irradiations 43 days. 2354000100039 (GSPEC) 2354000100040 DETECTOR (HPGE) HPGe detector with relative efficiency of 60%. 2354000100041 Sample-detector distance of 13.2 cm with a shielding 2354000100042 of 2 mm thick lead sheet for attenuation of the low 2354000100043 energy gamma- and x-rays. 2354000100044 DECAY-DATA (69-TM-172,2.65D,DG,1093.59,0.060, 2354000100045 DG,1387.093,0.0558, 2354000100046 DG,1529.64,0.051, 2354000100047 DG,1608.37,0.0414) 2354000100048 CORRECTION The following corrections applied: 2354000100049 - fa decay during the activation 2354000100050 - fw decay between activation and measurement 2354000100051 - fm decay during the measurement 2354000100052 - fd dead time correction 2354000100053 ASSUMED (ASSUM,21-SC-44(N,G)21-SC-45,,SIG) 2354000100054 (ASSUM1,73-TA-181(N,G)73-TA-182,,SIG) 2354000100055 (ASSUM2,79-AU-197(N,G)79-AU-198,,SIG) 2354000100056 (ASSUM3,21-SC-44(N,G)21-SC-45,,RI) 2354000100057 (ASSUM4,73-TA-181(N,G)73-TA-182,,RI) 2354000100058 (ASSUM5,79-AU-197(N,G)79-AU-198,,RI) 2354000100059 REL-REF (R,,B.Pritychenko+,J,NDS,113,3120,2012) Thermal cross 2354000100060 sections and RI for the monitor reactions given under 2354000100061 assumed. 2354000100062 (R,,B.Singh,J,NDS,75,199,1995) A=172 evaluation. 2354000100063 ERR-ANALYS (ERR-T) Total uncertainty determined from the partial 2354000100064 uncertainties of the following parameters: 2354000100065 For monitor reactions: 2354000100066 (ERR-1,,0.3) Gamma intensity 2354000100067 (ERR-2,1.1,1.6) Detector efficiency 2354000100068 (ERR-3,,0.1) Correction factors fa, fw and fb 2354000100069 (ERR-4,0.6,2.4) Counting statistics 2354000100070 For measured cross section 2354000100071 (ERR-5,5.6,10.8) Gamma intensity 2354000100072 (ERR-6,0.9,1.1) Detector efficiency 2354000100073 (ERR-7,,0.5) Correction factors fa, fw and fb 2354000100074 (ERR-8,1.9,3.5) Counting statistics 2354000100075 (ERR-S) Statistical uncertainty of the reported value 2354000100076 (ERR-SYS) Systematic uncertainty of the reported value 2354000100077 HISTORY (20200219C) VS 2354000100078 ENDBIB 76 0 2354000100079 COMMON 6 3 2354000100080 ASSUM ASSUM1 ASSUM2 ASSUM3 ASSUM4 ASSUM5 2354000100081 B B B B B B 2354000100082 27.2 20.5 98.65 12.1 655. 1550.2354000100083 ENDCOMMON 3 0 2354000100084 ENDSUBENT 83 0 2354000199999 SUBENT 23540002 20200219 22862354000200001 BIB 2 2 2354000200002 REACTION (69-TM-171(N,G)69-TM-172,,SIG) 2354000200003 STATUS (TABLE) Text p.065810-4 of Phys.Rev.C99(2019)065810 2354000200004 ENDBIB 2 0 2354000200005 NOCOMMON 0 0 2354000200006 DATA 5 1 2354000200007 EN DATA ERR-T ERR-S ERR-SYS 2354000200008 EV B B B B 2354000200009 0.0253 9.9 0.9 0.8 0.3 2354000200010 ENDDATA 3 0 2354000200011 ENDSUBENT 10 0 2354000299999 SUBENT 23540003 20200306 22862354000300001 BIB 2 2 2354000300002 REACTION (69-TM-171(N,G)69-TM-172,,RI) 2354000300003 STATUS (TABLE) Text p.065810-4 of Phys.Rev.C99(2019)065810 2354000300004 ENDBIB 2 0 2354000300005 NOCOMMON 0 0 2354000300006 DATA 6 1 2354000300007 EN-MIN EN-MAX DATA ERR-T ERR-S ERR-SYS 2354000300008 EV MEV B B B B 2354000300009 0.09 2. 193. 14. 12. 8.2354000300010 ENDDATA 3 0 2354000300011 ENDSUBENT 10 0 2354000399999 ENDENTRY 3 0 2354099999999