ENTRY 14496 20180509 14411449600000001 SUBENT 14496001 20180509 14411449600100001 BIB 12 28 1449600100002 TITLE Measurements of the 169Tm(n,2n)168Tm cross section 1449600100003 from threshold to 15 MeV 1449600100004 AUTHOR (J.Soter,M.Bhike,S.W.Finch,Krishichayan,W.Tornow) 1449600100005 INSTITUTE (1USADKE,1USATNL) 1449600100006 REFERENCE (J,PR/C,96,064619,2017) 1449600100007 FACILITY (VDGT,1USATNL) Experiment perfomed at the TUNL tandem 1449600100008 accelerator facility. 1449600100009 SAMPLE The thulium samples consisted of 11.1 mm diameter 1449600100010 disks of 0.1 mm thickness. They were positioned at a 1449600100011 distance of 2.5 cm from the neutron source.The 1449600100012 thulium disks were sandwiched between two monitor 1449600100013 foils of 197Au of the same diameter as the thulium 1449600100014 disks and 0.025 mm thick. 1449600100015 DETECTOR (HPGE) the thulium and monitor foils were gamma ray 1449600100016 counted in TUNL's Low-Background Counting Facility 1449600100017 using 25%, 55%, or 60% relative efficiency 1449600100018 high-purity germanium detectors 1449600100019 METHOD (ACTIV) Activation method was used. Irradiation times 1449600100020 varied between 2 and 8 h, depending on neutron source 1449600100021 reaction and energy. 1449600100022 MONITOR (79-AU-197(N,2N)79-AU-196-G,,SIG) 1449600100023 DECAY-MON (79-AU-196-G,6.1669D,DG,355.73,0.87) 1449600100024 INC-SOURCE (D-D) The 2H(d,n) 3H reaction was employed to produce 1449600100025 mono-energetic neutrons in 0.5-MeV energy steps 1449600100026 between 8.5 and 14 MeV. 1449600100027 (D-T) To extend the energy range to higher energies, 1449600100028 the 3H(d,n) 4H reaction was used at 14.8 MeV. 1449600100029 HISTORY (20180509C) Compiled by S.H. 1449600100030 ENDBIB 28 0 1449600100031 NOCOMMON 0 0 1449600100032 ENDSUBENT 31 0 1449600199999 SUBENT 14496002 20180509 14411449600200001 BIB 4 44 1449600200002 REACTION (69-TM-169(N,2N)69-TM-168,,SIG) 1449600200003 STATUS (TABLE) Data teaken from tab. 2 of the reference 1449600200004 DECAY-DATA (69-TM-168,93.1D,DG,184.295,0.1815, 1449600200005 DG,198.251,0.5449, 1449600200006 DG,447.515,0.2398, 1449600200007 DG,815.989,0.5095) 1449600200008 ERR-ANALYS (ERR-S,0.104,1.708) Total statistical uncertainty, 1449600200009 consisting of 1449600200010 sample statistical uncertainty (0.1 - 1.6)% 1449600200011 monitor statistical uncertainty (0.03-0.60) % 1449600200012 (ERR-1,0.81,7.77) Systematic uncertainty in sample 1449600200013 detection efficiency 1449600200014 (ERR-2,2.4,4.8) Systematic uncertainty in monitor 1449600200015 detection efficiency 1449600200016 (ERR-3) Systematic uncertainty in sample half-life 1449600200017 (ERR-4) Systematic uncertainty in monitor half-life 1449600200018 (ERR-5) Systematic uncertainty in monitor gamma ray 1449600200019 intensity 1449600200020 (ERR-6,3.,5.) Systematic uncertainty in sample 1449600200021 coincidence summing 1449600200022 (ERR-7,1.,3.) Systematic uncertainty in monitor 1449600200023 coincidence summing 1449600200024 (ERR-8,,0.5) Systematic uncertainty in sample 1449600200025 geometry and selfabsorption of gamma rays 1449600200026 (ERR-9,,0.5) Systematic uncertainty in monitor foil 1449600200027 geometry and selfabsorption of gamma rays 1449600200028 (ERR-10,,0.707) Systematic uncertainty in irradiation 1449600200029 time, consisting of systematic uncertainties in 1449600200030 - sample irradiation time <0.5% 1449600200031 - monitor irradiation time <0.5% 1449600200032 (ERR-11,,0.5) Systematic uncertainty in sample 1449600200033 decay time 1449600200034 (ERR-12,,0.5) Systematic uncertainty in monitor 1449600200035 decay time 1449600200036 (ERR-13,,0.5) Systematic uncertainty in sample 1449600200037 counting time 1449600200038 (ERR-14,,0.5) Systematic uncertainty in monitor 1449600200039 counting time 1449600200040 (ERR-15,,0.707) Systematic uncertainty in neutron 1449600200041 flux fluctuation consisting of systematic 1449600200042 uncertainties in 1449600200043 - sample neutron flux fluctuation <0.5% 1449600200044 - monitor neutron flux fluctuation <0.5% 1449600200045 (ERR-T) Total uncertainty 1449600200046 ENDBIB 44 0 1449600200047 COMMON 3 3 1449600200048 ERR-3 ERR-4 ERR-5 1449600200049 PER-CENT PER-CENT PER-CENT 1449600200050 0.21 0.01 0.29 1449600200051 ENDCOMMON 3 0 1449600200052 DATA 6 13 1449600200053 EN EN-RSL DATA ERR-T MONIT MONIT-ERR 1449600200054 MEV MEV MB MB MB MB 1449600200055 8.43 0.12 133.4 12.4 77.85 6.34 1449600200056 8.93 0.12 401.3 23.9 304.9 11.8 1449600200057 9.43 0.12 825.0 56.6 651.5 21.8 1449600200058 9.93 0.11 1149.3 74.4 978.8 29.7 1449600200059 10.42 0.10 1321.9 78.5 1222.1 35.8 1449600200060 10.92 0.12 1467.1 53.6 1420.8 39.2 1449600200061 11.41 0.11 1584.3 66.0 1577.6 41.9 1449600200062 11.91 0.11 1697.4 69.3 1713.3 43.6 1449600200063 12.41 0.11 1807.6 69.7 1834.6 43.9 1449600200064 12.9 0.10 1923.6 68.4 1944.1 41.7 1449600200065 13.4 0.10 1982.4 68.6 2043.7 34.2 1449600200066 13.9 0.09 2058.4 67.1 2119.9 25.3 1449600200067 14.8 0.06 2068.2 70.9 2164.2 22.8 1449600200068 ENDDATA 15 0 1449600200069 ENDSUBENT 68 0 1449600299999 ENDENTRY 2 0 1449699999999