ENTRY L0156 20101229 L015L015600000001 SUBENT L0156001 20101229 L015L015600100001 BIB 12 46 L015600100002 TITLE Measurement of the 241Am(g,n)240Am reaction in the L015600100003 giant dipole resonance region L015600100004 AUTHOR (A.P.Tonchev,S.L.Hammond,C.R.Howell,C.Huibregtse, L015600100005 A.Hutcheson,J.H.K Elley,E.Kwan,R.Raut,G.Rusev,W.Tornow,L015600100006 T.Kawano,D.J.Vieira,J.B.Wilhelmy) L015600100007 INSTITUTE (1USADKE,1USATNL,1USANCA,1USANCS,1USALAS) L015600100008 REFERENCE (J,PR/C,82,054620,2010) L015600100009 FACILITY (ESTRG,1USATNL)Experiment was conducted using TUNL's L015600100010 High-Intensity Gamma-Ray Source (HIgS) at the Duke L015600100011 Free-Electron-Laser Laboratory L015600100012 SAMPLE The 241Am targets were produced and chemically L015600100013 purified at Los Alamos National Laboratory as a L015600100014 dried nitrate powder. Six electroplated targets about L015600100015 0.8 mg/cm2 thick and 1 cm in diameter were used. Each L015600100016 Americium target was sandwiched between an upstream L015600100017 and downstream set of Au and Ni monitoring foils 1 cm L015600100018 in diameter and 25 mu-m in thickness. L015600100019 DETECTOR (HPGE) Two independent 60% HPGe detectors were used L015600100020 to count off line each monitor foil pack and the L015600100021 americium target. The absolute efficiency of the L015600100022 HPGe detectors at 1.33 MeV was 0.0150 +- 0.0003. L015600100023 METHOD (ACTIV) L015600100024 INC-SOURCE (LCS) Monoenergetic photons with high polarization L015600100025 and selectable energy were produced at the HIgS L015600100026 facility using intracavity backscattering of free- L015600100027 electron-laser (FEL) photons from electrons in the L015600100028 DFELL storage ring. L015600100029 DECAY-DATA (95-AM-240,50.3HR,DG,987.76,0.722, L015600100030 DG,888.80,0.251) L015600100031 ERR-ANALYS (ERR-T) Total uncertainty L015600100032 (ERR-S,4.2,4.6) Overall statistical uncertainty L015600100033 (ERR-2,4.0,14.0)Uncertainty in counting statistics L015600100034 (ERR-3,0.0,1.0) Uncertainty in gamma ray L015600100035 selfabsorption L015600100036 (ERR-4) Uncertainty in sample mass L015600100037 (ERR-SYS,4.4,5.0) Overall systematic uncertainty L015600100038 (ERR-5,2.0,4.0) Systematic uncertainty in detection L015600100039 efficiency L015600100040 (ERR-6) Systematic uncertainty in gamma ray emission L015600100041 probability L015600100042 (ERR-7,0.0,1.0) Syst. uncertainty in half-life L015600100043 (ERR-8,0.0,2.0) Syst. uncertainty in coincidence L015600100044 summing L015600100045 (ERR-9,0.0,3.0) Syst.uncertainty in monitor cross L015600100046 section L015600100047 HISTORY (20101229C) Compiled by S.H. L015600100048 ENDBIB 46 0 L015600100049 COMMON 2 3 L015600100050 ERR-4 ERR-6 L015600100051 PER-CENT PER-CENT L015600100052 2.0 1.0 L015600100053 ENDCOMMON 3 0 L015600100054 ENDSUBENT 53 0 L015600199999 SUBENT L0156002 20101229 L015L015600200001 BIB 4 4 L015600200002 REACTION (95-AM-241(G,N)95-AM-240,,SIG) L015600200003 MONITOR (79-AU-197(G,N)79-AU-196,,SIG) L015600200004 DECAY-MON (79-AU-196,6.183D,DG,255.73,0.8700) L015600200005 STATUS (TABLE) Data taken from tab. 2 of the reference L015600200006 ENDBIB 4 0 L015600200007 NOCOMMON 0 0 L015600200008 DATA 4 9 L015600200009 EN EN-ERR DATA ERR-T L015600200010 MEV MEV MB MB L015600200011 9.00 0.13 33.0 13.0 L015600200012 9.70 0.14 60.0 5.0 L015600200013 10.00 0.15 91.3 13.0 L015600200014 10.47 0.16 152.0 15.0 L015600200015 11.20 0.17 185.7 11.0 L015600200016 12.20 0.17 199.3 8.0 L015600200017 12.90 0.19 175.0 13.0 L015600200018 13.60 0.20 153.3 6.0 L015600200019 15.60 0.24 71.4 4.0 L015600200020 ENDDATA 11 0 L015600200021 ENDSUBENT 20 0 L015600299999 SUBENT L0156003 20101229 L015L015600300001 BIB 4 4 L015600300002 REACTION (95-AM-241(G,N)95-AM-240,,SIG) L015600300003 MONITOR (28-NI-58(G,N)28-NI-57,,SIG) L015600300004 DECAY-MON (28-NI-57,35.60HR,DG,1377.63,0.8170) L015600300005 STATUS (TABLE) Data taken from tab. 2 of the reference L015600300006 ENDBIB 4 0 L015600300007 NOCOMMON 0 0 L015600300008 DATA 4 4 L015600300009 EN EN-ERR DATA ERR-T L015600300010 MEV MEV MB MB L015600300011 12.20 0.17 214.0 21.0 L015600300012 12.90 0.19 186.0 18.0 L015600300013 13.60 0.20 170.5 9.0 L015600300014 15.60 0.24 69.2 4.0 L015600300015 ENDDATA 6 0 L015600300016 ENDSUBENT 15 0 L015600399999 SUBENT L0156004 20101229 L015L015600400001 BIB 3 6 L015600400002 REACTION (95-AM-241(G,N)95-AM-240,,SIG) L015600400003 COMMENT Average values obtained using both Au and Ni monitor L015600400004 foils L015600400005 STATUS (TABLE) Data taken from tab. 2 of the reference L015600400006 (DEP,L0156002) L015600400007 (DEP,L0156003) L015600400008 ENDBIB 6 0 L015600400009 NOCOMMON 0 0 L015600400010 DATA 4 9 L015600400011 EN EN-ERR DATA ERR-T L015600400012 MEV MEV MB MB L015600400013 9.00 0.13 33.0 13.0 L015600400014 9.70 0.14 60.0 5.0 L015600400015 10.00 0.15 91.0 13.0 L015600400016 10.47 0.16 152.0 15.0 L015600400017 11.20 0.17 186.0 11.0 L015600400018 12.20 0.17 201.0 8.0 L015600400019 12.90 0.19 179.0 11.0 L015600400020 13.60 0.20 159.0 5.0 L015600400021 15.60 0.24 70.0 3.0 L015600400022 ENDDATA 11 0 L015600400023 ENDSUBENT 22 0 L015600499999 ENDENTRY 4 0 L015699999999