ENTRY 14358 20160315 14161435800000001 SUBENT 14358001 20160315 14161435800100001 BIB 13 83 1435800100002 TITLE Ground-state and isomeric-state cross section for 1435800100003 181Ta(n,2n)180Ta between 8 and 15 MeV 1435800100004 AUTHOR (C.Bhatia,M.E.Gooden,W.Tornow,A.P.Tonchev) 1435800100005 INSTITUTE (1USADKE,1USATNL,1USANCS,1USALRL) 1435800100006 REFERENCE (J,PR/C,87,031601,2013) Main reference 1435800100007 (J,NDS,119,176,2014) Contains identical data 1435800100008 FACILITY (VDGT,1USATNL) Experiment performed at the Triangle 1435800100009 Universities Nuclear Laboratory's tandem accelerator 1435800100010 SAMPLE High purity natural tantalum squares of 10 mm x 10 mm 1435800100011 area and 0.125 mm thickness were positioned 2.5 cm 1435800100012 from the end of the deuterium gas cell at 0 deg 1435800100013 relative to the incident deuteron beam 1435800100014 DETECTOR (HPGE) High-Purity Germanium (HPGe) detector with 1435800100015 relative efficiency of 20% placed in TUNL's 1435800100016 low-background counting facility was used to detect 1435800100017 gamma rays from activated sample 1435800100018 METHOD (ACTIV) Cross section determined by activation method 1435800100019 MONITOR 1(79-AU-197(N,2N)79-AU-196,,SIG) 1435800100020 Monitor cross section data from author 1435800100021 En XS(mb) dXS(mb) 1435800100022 8.306 37.075 5.77 1435800100023 8.75 183.065 7.8 1435800100024 9.25 521.409 18.88 1435800100025 9.75 882.812 27.01 1435800100026 10.25 1149.44 34.6 1435800100027 10.75 1363.23 38.17 1435800100028 11.25 1532.5 41.22 1435800100029 11.75 1673.48 43.34 1435800100030 12.25 1797.93 44.05 1435800100031 12.75 1912.41 43.41 1435800100032 13.25 2018.01 37.53 1435800100033 13.75 2103.71 26.3 1435800100034 14.1 2141.48 23.98 1435800100035 14.3 2151.49 24.1 1435800100036 14.5 2157.47 23.3 1435800100037 14.7 2162.23 22.27 1435800100038 14.9 2166.16 23.39 1435800100039 15.25 2168.52 31.23 1435800100040 2(13-AL-27(N,A)11-NA-24,,SIG) this reaction was used 1435800100041 only at neutron energies bellow 12 MeV 1435800100042 Monitor cross section data from author 1435800100043 En XS(mb) dXS(mb) 1435800100044 6.875 13.554 0.22 1435800100045 7.125 19.142 0.278 1435800100046 7.375 24.599 0.29 1435800100047 7.625 30.382 0.304 1435800100048 7.875 36.732 0.34161 1435800100049 8.125 43.575 0.38346 1435800100050 8.375 50.711 0.43611 1435800100051 8.625 57.893 0.49788 1435800100052 8.875 64.889 0.56453 1435800100053 9.125 71.519 0.62222 1435800100054 9.375 77.667 0.68347 1435800100055 9.625 83.281 0.7412 1435800100056 9.875 88.359 0.80407 1435800100057 10.125 92.933 0.86428 1435800100058 10.375 97.054 0.92201 1435800100059 10.625 100.777 0.97754 1435800100060 10.875 104.155 1.0103 1435800100061 11.125 107.155 1.0394 1435800100062 11.375 110.06 1.07859 1435800100063 11.625 112.658 1.10405 1435800100064 11.875 115.059 1.13908 1435800100065 12.25 118.324 1.2069 1435800100066 DECAY-MON 1(79-AU-196-G,6.17D,DG,355.7,0.87) 1435800100067 2(11-NA-24,14.997HR,DG,1368.626,0.999936) 1435800100068 INC-SOURCE (D-D) 2H(d,n)3He reaction was used to produce quasi 1435800100069 monoenergetic neutrons between 8 and 14.5 MeV. 1435800100070 Typical deuteron beam currents on target were 2 mu-A. 1435800100071 The target consisted of a 3 cm long and 1 cm 1435800100072 diameter cylindrical gas cell made of thin-walled 1435800100073 stainless steel and filled with high-purity deuterium 1435800100074 gas. The deuterium gas pressure was adjusted between 1435800100075 3 atm at the lowest energy and 4.6 atm at the highest 1435800100076 energy to provide the desired neutron energy spread 1435800100077 in the energy range investigated. 1435800100078 (D-T) 2H(t,n)4He reaction was used for measurement at 1435800100079 14.8 MeV 1435800100080 ERR-ANALYS (ERR-S) Statistical uncertainty 1435800100081 (ERR-T) Total uncertainty 1435800100082 HISTORY (20130316C) Compiled by S.H. 1435800100083 (20140122A) NDS Proceedings of ND2013 added 1435800100084 (20160315A) OS. Error heading corrected in sub.2 1435800100085 ENDBIB 83 0 1435800100086 NOCOMMON 0 0 1435800100087 ENDSUBENT 86 0 1435800199999 SUBENT 14358002 20160315 14161435800200001 BIB 5 11 1435800200002 REACTION (73-TA-181(N,2N)73-TA-180-G,,SIG) 1435800200003 STATUS (TABLE) Data taken from tab. 1 of the main reference 1435800200004 DECAY-DATA (73-TA-180-G,8.154HR,DG,93.4,0.0451) 1435800200005 ANALYSIS Cross section was determined relative to two monitor 1435800200006 reactions up to incident energy of 12 MeV. Monitor 1435800200007 reaction cross section was interpolated to the energy 1435800200008 where the cross section was measured. Up to energy of 1435800200009 12 MeV the final cross section was determined as 1435800200010 average of two cross sections, obtained for each 1435800200011 monitor reaction. 1435800200012 HISTORY (20160315A) DATA-ERR changed to ERR-T 1435800200013 ENDBIB 11 0 1435800200014 NOCOMMON 0 0 1435800200015 DATA 5 12 1435800200016 EN EN-RSL DATA ERR-S ERR-T 1435800200017 MEV MEV MB MB MB 1435800200018 7.93 0.20 27.06 0.40 1.36 1435800200019 8.18 0.19 97.44 0.84 4.51 1435800200020 8.43 0.19 154.40 1.10 7.20 1435800200021 8.93 0.20 404.61 1.30 21.59 1435800200022 9.43 0.20 723.28 2.90 33.60 1435800200023 9.91 0.24 862.74 3.20 46.05 1435800200024 10.91 0.23 1123.37 4.22 62.32 1435800200025 11.90 0.22 1206.11 5.45 55.85 1435800200026 12.90 0.22 1293.53 6.66 67.40 1435800200027 13.90 0.22 1189.25 7.95 61.56 1435800200028 14.39 0.22 1232.25 10.02 63.07 1435800200029 14.80 0.05 1233.70 11.56 60.57 1435800200030 ENDDATA 14 0 1435800200031 ENDSUBENT 30 0 1435800299999 ENDENTRY 2 0 1435899999999