ENTRY C2154 20241031 C243C215400000001 SUBENT C2154001 20241031 C243C215400100001 BIB 11 24 C215400100002 TITLE Ac, La, and Ce radioimpurities in 225Ac produced in C215400100003 40 - 200 MeV proton irradiations of thorium C215400100004 AUTHOR (J.W.Engle,J.W.Weidner,B.D.Ballard,M.E.Fassbender, C215400100005 L.A.Hudston,K.R.Jackman,D.E.Dry,L.E.Wolfsberg, C215400100006 L.J.Bitteker,J.L.Ullmann,M.S.Gulley,Ch.Pillai,G.Goff, C215400100007 E.R.Birnbaum,K.D.John,S.G.Mashnik,F.M.Nortier) C215400100008 INSTITUTE (1USALAS,1USAAFT) C215400100009 REFERENCE (J,RCA,102,569,2014) C215400100010 #doi:10.1515/ract-2013-2179 C215400100011 REL-REF (I,,J.W.Weidner+,J,ARI,70,2602,2012) Detailed C215400100012 description of experimental irradiations C215400100013 FACILITY (LINAC,1USALAS) Irradiations were performed at the C215400100014 Los Alamos National Laboratory's Neutron Science C215400100015 Center (LANSCE), proton beams of approximately 90-120 C215400100016 nA intensities with incident energies of 100 and C215400100017 200MeV. C215400100018 SAMPLE Thorium foil stacks were used as a sample. Each stack C215400100019 contained two sets of six thin thorium foils C215400100020 separated by aluminum energy degraders. C215400100021 METHOD (ACTIV,CHSEP) C215400100022 MONITOR (13-AL-27(P,X)11-NA-22,,SIG) C215400100023 ERR-ANALYS (DATA-ERR) No information given C215400100024 HISTORY (20150204C) Compiled by S.H. C215400100025 (20241025A) OS. DECAY-DATA in sub.2 corrected C215400100026 ENDBIB 24 0 C215400100027 NOCOMMON 0 0 C215400100028 ENDSUBENT 27 0 C215400199999 SUBENT C2154002 20241031 C243C215400200001 BIB 6 17 C215400200002 REACTION (90-TH-232(P,X)89-AC-227,CUM,SIG) C215400200003 STATUS (TABLE,,J.W.Engle+,J,RCA,102,569,2014) Tab.3. C215400200004 DETECTOR (SIBAR) Samples were assayed in eight chambers, each C215400200005 with a 300mm2 ruggedized Si surface barrier detector C215400200006 having a depletion depth of 100 mu-m, under a C215400200007 pressure of approximately 10 millitorr. C215400200008 DECAY-DATA (89-AC-227,21.8YR) C215400200009 (90-TH-227,18.68D) C215400200010 (88-RA-223,11.43D) C215400200011 (86-RN-219,3.96SEC) C215400200012 (84-PO-215,1.781MSEC,A,7390.,0.999998) C215400200013 METHOD Amount of reduced 227Ac was determined from its decay C215400200014 product 215Po. To reach equilibrium with 215Po parents C215400200015 to facilitate spectroscopic measurement required C215400200016 approximately 100-day waiting period following C215400200017 chemical separation C215400200018 HISTORY (20241025A) DECAY-DATA: Energy corrected C215400200019 ENDBIB 17 0 C215400200020 NOCOMMON 0 0 C215400200021 DATA 4 12 C215400200022 EN EN-ERR DATA DATA-ERR C215400200023 MEV MEV MB MB C215400200024 194.5 0.3 13.9 1.8 C215400200025 178.3 0.7 14.2 1.8 C215400200026 160.7 1.0 15.5 1.9 C215400200027 141.8 1.3 14.2 1.8 C215400200028 120.9 1.6 10.9 1.4 C215400200029 97.0 2.0 8.8 1.1 C215400200030 90.8 0.4 6.6 0.8 C215400200031 81.7 0.6 5.6 0.7 C215400200032 72.8 0.7 2.8 0.3 C215400200033 64.9 0.9 2.6 0.3 C215400200034 56.3 1.1 2.1 0.2 C215400200035 44.0 1.4 4.0 0.5 C215400200036 ENDDATA 14 0 C215400200037 ENDSUBENT 36 0 C215400299999 SUBENT C2154003 20150204 C150C2154 3 1 BIB 4 7 C2154 3 2 REACTION (90-TH-232(P,X)89-AC-226,CUM,SIG) C2154 3 3 STATUS (TABLE) Data taken from tab. 3 of the reference C2154 3 4 DETECTOR (SIBAR) Samples were assayed in eight chambers, each C2154 3 5 with a 300mm2 ruggedized Si surface barrier detector C2154 3 6 having a depletion depth of 100 mu-m, under a C2154 3 7 pressure of approximately 10 millitorr. C2154 3 8 DECAY-DATA (89-AC-226,29.4HR) C2154 3 9 ENDBIB 7 0 C2154 3 10 NOCOMMON 0 0 C2154 3 11 DATA 4 12 C2154 3 12 EN EN-ERR DATA DATA-ERR C2154 3 13 MEV MEV MB MB C2154 3 14 194.5 0.3 15.7 1.1 C2154 3 15 178.3 0.7 17.2 1.3 C2154 3 16 160.7 1.0 16.0 1.1 C2154 3 17 141.8 1.3 14.2 1.3 C2154 3 18 120.9 1.6 12.8 0.8 C2154 3 19 97.0 2.0 8.4 0.5 C2154 3 20 90.8 0.4 7.5 0.4 C2154 3 21 81.7 0.6 4.9 1.4 C2154 3 22 72.8 0.7 4.3 0.2 C2154 3 23 64.9 0.9 4.9 0.2 C2154 3 24 56.3 1.1 5.0 1.3 C2154 3 25 44.0 1.4 3.5 0.8 C2154 3 26 ENDDATA 14 0 C2154 3 27 ENDSUBENT 26 0 C2154 399999 SUBENT C2154004 20150204 C150C2154 4 1 BIB 4 8 C2154 4 2 REACTION (90-TH-232(P,X)58-CE-139,CUM,SIG) C2154 4 3 STATUS (TABLE) Data taken from tab. 3 of the reference C2154 4 4 DETECTOR (HPGE) Following the separation the samples were C2154 4 5 counted on an HPGe detector (1min count length), and C2154 4 6 the integrated counts were compared with those C2154 4 7 obtained from the 5mL standards counted in the same C2154 4 8 geometry. C2154 4 9 DECAY-DATA (58-CE-139-G,137.64D,DG,166.0,0.800) C2154 4 10 ENDBIB 8 0 C2154 4 11 NOCOMMON 0 0 C2154 4 12 DATA 4 9 C2154 4 13 EN EN-ERR DATA DATA-ERR C2154 4 14 MEV MEV MB MB C2154 4 15 194.5 0.3 2.1 0.2 C2154 4 16 178.3 0.7 2.2 0.2 C2154 4 17 160.7 1.0 2.1 0.1 C2154 4 18 141.8 1.3 1.9 0.2 C2154 4 19 120.9 1.6 1.5 0.1 C2154 4 20 97.0 2.0 1.1 0.2 C2154 4 21 90.8 0.4 0.9 0.4 C2154 4 22 81.7 0.6 0.9 0.6 C2154 4 23 72.8 0.7 0.2 0.0 C2154 4 24 ENDDATA 11 0 C2154 4 25 ENDSUBENT 24 0 C2154 499999 SUBENT C2154005 20150204 C150C2154 5 1 BIB 4 8 C2154 5 2 REACTION (90-TH-232(P,X)58-CE-141,CUM,SIG) C2154 5 3 STATUS (TABLE) Data taken from tab. 3 of the reference C2154 5 4 DETECTOR (HPGE) Following the separation the samples were C2154 5 5 counted on an HPGe detector (1min count length), and C2154 5 6 the integrated counts were compared with those C2154 5 7 obtained from the 5mL standards counted in the same C2154 5 8 geometry. C2154 5 9 DECAY-DATA (58-CE-141,32.51D,DG,145.0,0.4829) C2154 5 10 ENDBIB 8 0 C2154 5 11 NOCOMMON 0 0 C2154 5 12 DATA 4 12 C2154 5 13 EN EN-ERR DATA DATA-ERR C2154 5 14 MEV MEV MB MB C2154 5 15 194.5 0.3 13.1 0.9 C2154 5 16 178.3 0.7 15.8 1.2 C2154 5 17 160.7 1.0 16.3 4.0 C2154 5 18 141.8 1.3 17.0 1.9 C2154 5 19 120.9 1.6 19.8 1.4 C2154 5 20 97.0 2.0 24.5 2.7 C2154 5 21 90.8 0.4 24.7 1.2 C2154 5 22 81.7 0.6 25.9 1.2 C2154 5 23 72.8 0.7 26.5 1.2 C2154 5 24 64.9 0.9 28.1 1.2 C2154 5 25 56.3 1.1 28.4 1.1 C2154 5 26 44.0 1.4 30.4 1.6 C2154 5 27 ENDDATA 14 0 C2154 5 28 ENDSUBENT 27 0 C2154 599999 SUBENT C2154006 20150204 C150C2154 6 1 BIB 4 8 C2154 6 2 REACTION (90-TH-232(P,X)58-CE-143,CUM,SIG) C2154 6 3 STATUS (TABLE) Data taken from tab. 3 of the reference C2154 6 4 DETECTOR (HPGE) Following the separation the samples were C2154 6 5 counted on an HPGe detector (1min count length), and C2154 6 6 the integrated counts were compared with those C2154 6 7 obtained from the 5mL standards counted in the same C2154 6 8 geometry. C2154 6 9 DECAY-DATA (58-CE-143,33.04HR,DG,293.0,0.428) C2154 6 10 ENDBIB 8 0 C2154 6 11 NOCOMMON 0 0 C2154 6 12 DATA 4 12 C2154 6 13 EN EN-ERR DATA DATA-ERR C2154 6 14 MEV MEV MB MB C2154 6 15 194.5 0.3 7.7 0.5 C2154 6 16 178.3 0.7 9.3 0.7 C2154 6 17 160.7 1.0 9.6 0.6 C2154 6 18 141.8 1.3 10.9 0.7 C2154 6 19 120.9 1.6 13.4 1.6 C2154 6 20 97.0 2.0 15.2 1.7 C2154 6 21 90.8 0.4 15.2 0.8 C2154 6 22 81.7 0.6 16.4 0.8 C2154 6 23 72.8 0.7 17.8 0.8 C2154 6 24 64.9 0.9 19.9 1.0 C2154 6 25 56.3 1.1 21.7 1.0 C2154 6 26 44.0 1.4 24.3 1.4 C2154 6 27 ENDDATA 14 0 C2154 6 28 ENDSUBENT 27 0 C2154 699999 SUBENT C2154007 20150204 C150C2154 7 1 BIB 4 8 C2154 7 2 REACTION (90-TH-232(P,X)57-LA-140,IND,SIG) C2154 7 3 STATUS (TABLE) Data taken from tab. 3 of the reference C2154 7 4 DETECTOR (HPGE) Following the separation the samples were C2154 7 5 counted on an HPGe detector (1min count length), and C2154 7 6 the integrated counts were compared with those C2154 7 7 obtained from the 5mL standards counted in the same C2154 7 8 geometry. C2154 7 9 DECAY-DATA (57-LA-140,1.68D,DG,1596.0,0.954) C2154 7 10 ENDBIB 8 0 C2154 7 11 NOCOMMON 0 0 C2154 7 12 DATA 4 12 C2154 7 13 EN EN-ERR DATA DATA-ERR C2154 7 14 MEV MEV MB MB C2154 7 15 194.5 0.3 2.6 0.2 C2154 7 16 178.3 0.7 2.8 0.4 C2154 7 17 160.7 1.0 3.2 0.3 C2154 7 18 141.8 1.3 3.5 0.3 C2154 7 19 120.9 1.6 3.9 0.2 C2154 7 20 97.0 2.0 4.9 0.7 C2154 7 21 90.8 0.4 4.9 0.3 C2154 7 22 81.7 0.6 5.3 0.3 C2154 7 23 72.8 0.7 5.8 0.3 C2154 7 24 64.9 0.9 6.0 0.3 C2154 7 25 56.3 1.1 5.6 0.4 C2154 7 26 44.0 1.4 3.9 0.6 C2154 7 27 ENDDATA 14 0 C2154 7 28 ENDSUBENT 27 0 C2154 799999 SUBENT C2154008 20150204 C150C2154 8 1 BIB 4 8 C2154 8 2 REACTION (90-TH-232(P,X)56-BA-140,CUM,SIG) C2154 8 3 STATUS (TABLE) Data taken from tab. 3 of the reference C2154 8 4 DETECTOR (HPGE) Following the separation the samples were C2154 8 5 counted on an HPGe detector (1min count length), and C2154 8 6 the integrated counts were compared with those C2154 8 7 obtained from the 5mL standards counted in the same C2154 8 8 geometry. C2154 8 9 DECAY-DATA (56-BA-140,12.75D) C2154 8 10 ENDBIB 8 0 C2154 8 11 NOCOMMON 0 0 C2154 8 12 DATA 4 12 C2154 8 13 EN EN-ERR DATA DATA-ERR C2154 8 14 MEV MEV MB MB C2154 8 15 194.5 0.3 8.0 0.8 C2154 8 16 178.3 0.7 10.0 0.8 C2154 8 17 160.7 1.0 10.6 0.8 C2154 8 18 141.8 1.3 12.0 0.8 C2154 8 19 120.9 1.6 13.6 0.9 C2154 8 20 97.0 2.0 16.8 1.9 C2154 8 21 90.8 0.4 17.1 1.1 C2154 8 22 81.7 0.6 18.5 1.1 C2154 8 23 72.8 0.7 19.7 1.2 C2154 8 24 64.9 0.9 22.3 1.4 C2154 8 25 56.3 1.1 25.8 1.4 C2154 8 26 44.0 1.4 30.9 2.0 C2154 8 27 ENDDATA 14 0 C2154 8 28 ENDSUBENT 27 0 C2154 899999 ENDENTRY 8 0 C215499999999