ENTRY C1949 20121003 C123C194900000001 SUBENT C1949001 20121003 C123C194900100001 BIB 12 38 C194900100002 TITLE 225Ac and 223Ra production via 800 MeV proton C194900100003 irradiation of natural thorium targets C194900100004 AUTHOR (J.W.Weidner,S.G.Mashnik,K.D.John,B.Ballard, C194900100005 E.R.Birnbaum,L.J.Bitteker,A.Coutur,M.E.Fassbender, C194900100006 G.S.Goff,R.Gritzo,F.M.Hemez,W.Runde,J.L.Ullmann, C194900100007 L.E.Wolfsberg,F.M.Nortier) C194900100008 INSTITUTE (1USALAS) C194900100009 REFERENCE (J,ARI,70,2590,2012) C194900100010 FACILITY (LINAC,1USALAS) Experiment conducted at Los Alamos C194900100011 National Laboratory using Los Alamos Neutron Science C194900100012 Center(LANSCE)accelerator facility C194900100013 SAMPLE Natural thorium foils of 99.7% purity were used. Two C194900100014 foils were used as targets for this experiment, each C194900100015 measuring 2.5cm x 2.5 cm and having thicknesses of C194900100016 48.1 and 52.8 mg/cm2. Aluminum beam monitoring C194900100017 foil with the same dimensions and a thickness of C194900100018 65.3mg/cm2 was incorporated downstream of the thorium C194900100019 targets. All foils were sandwiched between single C194900100020 layers of Kapton tape with a thickness of 25 mu-m, C194900100021 which served as a catcher foil for recoil ions. C194900100022 DETECTOR (HPGE,GELI) One thorium foil was initially counted on C194900100023 a PGT Ge(Li) detector with a relative efficiency of C194900100024 13.7%. The HPGe detector used for additional C194900100025 measurement had efficiency of 10% C194900100026 MONITOR (13-AL-27(P,X)11-NA-22,CUM,SIG) C194900100027 METHOD (ACTIV) Cross sections were determined from analysis C194900100028 of gamma ray decay curves, followed over period of C194900100029 several months. C194900100030 ANALYSIS The 225Ac, 223,225Ra,and 227Th activities at EOB were C194900100031 calculated by performing a Markov chain Monte Carlo C194900100032 analysis of the measured decay curves. C194900100033 ERR-ANALYS (ERR-T) Total uncertainty obtained by summing in C194900100034 quadrature following uncertainties C194900100035 (ERR-1) Uncertainty in detector efficiency C194900100036 (ERR-2) Uncertainty in counting geometry C194900100037 (ERR-3,2.0,10.0) Uncertainty in branching ratio C194900100038 and peak area C194900100039 HISTORY (20121003C) Compiled by S.H. C194900100040 ENDBIB 38 0 C194900100041 COMMON 5 3 C194900100042 EN MONIT MONIT-ERR ERR-1 ERR-2 C194900100043 MEV MB MB PER-CENT PER-CENT C194900100044 800.0 15.0 0.9 2.1 1.0 C194900100045 ENDCOMMON 3 0 C194900100046 ENDSUBENT 45 0 C194900199999 SUBENT C1949002 20121003 C123C194900200001 BIB 3 3 C194900200002 REACTION (90-TH-232(P,X)89-AC-225,CUM,SIG) C194900200003 DECAY-DATA (89-AC-225,10.0D,DG,99.91,0.0101) C194900200004 STATUS (TABLE) Data taken from tab. 2 of the reference C194900200005 ENDBIB 3 0 C194900200006 NOCOMMON 0 0 C194900200007 DATA 2 1 C194900200008 DATA ERR-T C194900200009 MB MB C194900200010 14.8 1.1 C194900200011 ENDDATA 3 0 C194900200012 ENDSUBENT 11 0 C194900299999 SUBENT C1949003 20121003 C123C194900300001 BIB 3 3 C194900300002 REACTION (90-TH-232(P,X)88-RA-225,CUM,SIG) C194900300003 DECAY-DATA (88-RA-225,14.9D,DG,40.09,0.30) C194900300004 STATUS (TABLE) Data taken from tab. 2 of the reference C194900300005 ENDBIB 3 0 C194900300006 NOCOMMON 0 0 C194900300007 DATA 2 1 C194900300008 DATA ERR-T C194900300009 MB MB C194900300010 3.3 0.4 C194900300011 ENDDATA 3 0 C194900300012 ENDSUBENT 11 0 C194900399999 SUBENT C1949004 20121003 C123C194900400001 BIB 3 3 C194900400002 REACTION (90-TH-232(P,X)89-AC-227,CUM,SIG) C194900400003 DECAY-DATA (89-AC-227,27.773YR,DG,100.0,0.00009) C194900400004 STATUS (TABLE) Data taken from tab. 2 of the reference C194900400005 ENDBIB 3 0 C194900400006 NOCOMMON 0 0 C194900400007 DATA 2 1 C194900400008 DATA ERR-T C194900400009 MB MB C194900400010 20.8 2.0 C194900400011 ENDDATA 3 0 C194900400012 ENDSUBENT 11 0 C194900499999 SUBENT C1949005 20121003 C123C194900500001 BIB 3 3 C194900500002 REACTION (90-TH-232(P,X)88-RA-223,CUM,SIG) C194900500003 DECAY-DATA (88-RA-223,11.435D,DG,269.459,0.137) C194900500004 STATUS (TABLE) Data taken from tab. 2 of the reference C194900500005 ENDBIB 3 0 C194900500006 NOCOMMON 0 0 C194900500007 DATA 2 1 C194900500008 DATA ERR-T C194900500009 MB MB C194900500010 5.3 0.6 C194900500011 ENDDATA 3 0 C194900500012 ENDSUBENT 11 0 C194900599999 SUBENT C1949006 20121003 C123C194900600001 BIB 3 4 C194900600002 REACTION (90-TH-232(P,X)90-TH-227,CUM,SIG) C194900600003 DECAY-DATA (90-TH-227,18.72D,DG,235.971,0.123, C194900600004 DG,256.25,0.07) C194900600005 STATUS (TABLE) Data taken from tab. 2 of the reference C194900600006 ENDBIB 4 0 C194900600007 NOCOMMON 0 0 C194900600008 DATA 2 1 C194900600009 DATA ERR-T C194900600010 MB MB C194900600011 12.7 0.7 C194900600012 ENDDATA 3 0 C194900600013 ENDSUBENT 12 0 C194900699999 ENDENTRY 6 0 C194999999999