ENTRY D1013 20220214 D136D101300000001 SUBENT D1013001 20220214 D136D101300100001 BIB 14 52 D101300100002 TITLE Pairing of thorium with selected primary target D101300100003 materials in tandem configurations: Co-production of D101300100004 225Ac/213Bi and 230U/226Th generators with a 70 MeV D101300100005 H- cyclotron D101300100006 AUTHOR (G.F.Steyn, M.A.Motetshwane, F.Szelecsenyi, D101300100007 J.W.Bruemmer) D101300100008 INSTITUTE (3SAFITH,3HUNDEB) D101300100009 (3BWABWA) Botswana International University of Science D101300100010 and Technology, Palapye D101300100011 REFERENCE (J,ARI,168,109514,2021) D101300100012 FACILITY (CYCLO,3SAFITH) Separated-sector cyclotron (SSC) D101300100013 INC-SOURCE The primary proton beam energies determined with D101300100014 monitor reactions were 40.3+/-0.3 and 67.0+/-0.5 MeV. D101300100015 SAMPLE - Th foils (25 um nominal thickness, 99.7% purity) D101300100016 - Kapton foils (25 um thickness) D101300100017 - natMg foils (50 um nominal thickness, 99.9% purity) D101300100018 - Cu, Ti and Al foils as monitors and degraders D101300100019 DETECTOR (HPGE) Relative efficiency of 15%, resolution of D101300100020 1.8 keV FWHM at 1.33 MeV D101300100021 METHOD (STTA) Each stack contained 13 Th foils sandwiched D101300100022 between Kapton foils served as catchers. D101300100023 Behind of each Th sandwich was placed a Mg foil and D101300100024 a series of D101300100025 - Cu and Ti monitor foils interspersed with Al D101300100026 degrader foils for 40 MeV irradiation, D101300100027 - Al monitor/degrader foils for 66 MeV irradiation. D101300100028 (ACTIV) Irradiated by primary proton beams at 40 and D101300100029 66 MeV (average current of 50 nA) for 5 hours per D101300100030 stack D101300100031 (BCINT) Current and charge values logged in 1-sec D101300100032 intervals D101300100033 Deon Steyn (2021-02-15): D101300100034 The directly measured proton flux agrees with the D101300100035 flux measured via the monitor foils quite well. D101300100036 (GSPEC) Counting started a couple of days after the D101300100037 end of bombardment and continued for several months D101300100038 ANALYSIS MCNP calculation was performed to determine the D101300100039 average energy, FWHM energy spread and correction D101300100040 factor for beam intensities loss due to non-elastic D101300100041 nuclear interactions. D101300100042 ERR-ANALYS (ERR-T) Total uncertainties (one-sigma) obtained by D101300100043 summing all contributing uncertainties in quadrature. D101300100044 Statistical uncertainties are negligible compared to D101300100045 systematic uncertainties except where the cross D101300100046 sections become very small. D101300100047 (ERR-1) Beam-current integration (3%) D101300100048 (ERR-2) Detector efficiency (5%) D101300100049 (ERR-3) Counting geometry (1%) D101300100050 (ERR-4) Decay correction (2%) D101300100051 ADD-RES (TTY-C) Physical yields of 225Ac and 22Na D101300100052 STATUS (APRVD) Proof-read by Deon Steyn (2021-02-15) D101300100053 HISTORY (20210818C) On D101300100054 ENDBIB 52 0 D101300100055 COMMON 4 3 D101300100056 ERR-1 ERR-2 ERR-3 ERR-4 D101300100057 PER-CENT PER-CENT PER-CENT PER-CENT D101300100058 3. 5. 1. 2. D101300100059 ENDCOMMON 3 0 D101300100060 ENDSUBENT 59 0 D101300199999 SUBENT D1013002 20210818 D136D101300200001 BIB 7 14 D101300200002 REACTION 1(90-TH-232(P,X)89-AC-225,,SIG) D101300200003 2(90-TH-232(P,X)88-RA-225,CUM,SIG) D101300200004 RAD-DET (87-FR-221,DG) D101300200005 DECAY-DATA (89-AC-225,9.920D) D101300200006 (88-RA-225,14.9D) D101300200007 (87-FR-221,4.801MIN,DG,218.0,0.1144) D101300200008 ANALYSIS (DECAY) 225Ra/225Ac yield ratio was determined to D101300200009 minimize the chi-square for fitting to the measured D101300200010 decay curve D101300200011 COMMENT 2Deon Steyn (2022-02-15): D101300200012 225Fr contributions are almost negligible according D101300200013 to TENDL-2019 values. D101300200014 ERR-ANALYS (ERR-5) Foil thickness (3%) D101300200015 STATUS (TABLE) Table 2 of Appl.Radiat.Isot.168(2021)109514 D101300200016 ENDBIB 14 0 D101300200017 COMMON 1 3 D101300200018 ERR-5 D101300200019 PER-CENT D101300200020 3. D101300200021 ENDCOMMON 3 0 D101300200022 DATA 6 14 D101300200023 EN EN-RSL-HW DATA 1ERR-T 1DATA 2ERR-T 2D101300200024 MEV MEV MB MB MB MB D101300200025 66.97 0.50 4.73E+00 0.34E+00 4.86E-01 1.23E-01D101300200026 64.65 0.52 5.12E+00 0.39E+00 3.82E-01 1.16E-01D101300200027 62.20 0.55 5.38E+00 0.39E+00 3.01E-01 1.08E-01D101300200028 60.00 0.57 5.89E+00 0.43E+00 1.81E-01 0.73E-01D101300200029 57.73 0.60 6.34E+00 0.45E+00 1.29E-01 0.58E-01D101300200030 55.40 0.62 6.55E+00 0.47E+00 9.94E-02 4.97E-02D101300200031 53.02 0.65 6.35E+00 0.45E+00 3.18E-02 1.74E-02D101300200032 50.80 0.67 6.16E+00 0.44E+00 D101300200033 48.53 0.71 5.32E+00 0.38E+00 D101300200034 46.17 0.72 3.97E+00 0.28E+00 D101300200035 44.08 0.75 2.72E+00 0.20E+00 D101300200036 41.96 0.76 1.40E+00 0.11E+00 D101300200037 40.25 0.30 3.65E-01 0.50E-01 D101300200038 39.72 0.81 4.11E-01 0.63E-01 D101300200039 ENDDATA 16 0 D101300200040 ENDSUBENT 39 0 D101300299999 SUBENT D1013003 20210818 D136D101300300001 BIB 4 4 D101300300002 REACTION (90-TH-232(P,3N)91-PA-230,,SIG) D101300300003 DECAY-DATA (91-PA-230,17.4D,DG,951.88,0.296) D101300300004 ERR-ANALYS (ERR-5) Foil thickness (3%) D101300300005 STATUS (TABLE) Table 2 of Appl.Radiat.Isot.168(2021)109514 D101300300006 ENDBIB 4 0 D101300300007 COMMON 1 3 D101300300008 ERR-5 D101300300009 PER-CENT D101300300010 3. D101300300011 ENDCOMMON 3 0 D101300300012 DATA 4 25 D101300300013 EN EN-RSL-HW DATA ERR-T D101300300014 MEV MEV MB MB D101300300015 66.97 0.50 1.78E+01 0.12E+01 D101300300016 64.65 0.52 1.87E+01 0.13E+01 D101300300017 62.20 0.55 2.00E+01 0.14E+01 D101300300018 60.00 0.57 2.16E+01 0.15E+01 D101300300019 57.73 0.60 2.05E+01 0.14E+01 D101300300020 55.40 0.62 2.26E+01 0.16E+01 D101300300021 53.02 0.65 2.33E+01 0.16E+01 D101300300022 50.80 0.67 2.48E+01 0.17E+01 D101300300023 48.53 0.71 2.62E+01 0.18E+01 D101300300024 46.17 0.72 2.64E+01 0.19E+01 D101300300025 44.08 0.75 2.81E+01 0.20E+01 D101300300026 41.96 0.76 3.08E+01 0.22E+01 D101300300027 40.25 0.30 3.23E+01 0.23E+01 D101300300028 39.72 0.81 3.39E+01 0.24E+01 D101300300029 38.06 0.33 3.54E+01 0.25E+01 D101300300030 35.74 0.35 3.80E+01 0.27E+01 D101300300031 33.30 0.39 4.32E+01 0.30E+01 D101300300032 30.74 0.42 6.12E+01 0.43E+01 D101300300033 28.50 0.45 6.69E+01 0.47E+01 D101300300034 26.11 0.49 1.17E+02 0.08E+02 D101300300035 23.54 0.52 2.42E+02 0.17E+02 D101300300036 21.41 0.55 3.52E+02 0.25E+02 D101300300037 19.12 0.60 2.26E+02 0.16E+02 D101300300038 16.54 0.66 7.87E+01 0.55E+01 D101300300039 13.63 0.76 7.51E-01 0.57E-01 D101300300040 ENDDATA 27 0 D101300300041 ENDSUBENT 40 0 D101300399999 SUBENT D1013004 20210818 D136D101300400001 BIB 4 4 D101300400002 REACTION (12-MG-0(P,X)11-NA-22,,SIG) D101300400003 DECAY-DATA (11-NA-22,2.6018YR,DG,1274.537,0.9994) D101300400004 ERR-ANALYS (ERR-5) Foil thickness (6%) D101300400005 STATUS (TABLE) Table 3 of Appl.Radiat.Isot.168(2021)109514 D101300400006 ENDBIB 4 0 D101300400007 COMMON 1 3 D101300400008 ERR-5 D101300400009 PER-CENT D101300400010 6. D101300400011 ENDCOMMON 3 0 D101300400012 DATA 4 27 D101300400013 EN EN-RSL-HW DATA ERR-T D101300400014 MEV MEV MB MB D101300400015 66.78 0.50 5.81E+01 0.50E+01 D101300400016 64.46 0.53 5.95E+01 0.51E+01 D101300400017 62.00 0.55 6.57E+01 0.56E+01 D101300400018 59.81 0.57 6.47E+01 0.56E+01 D101300400019 57.54 0.60 6.85E+01 0.59E+01 D101300400020 55.21 0.62 6.85E+01 0.59E+01 D101300400021 52.77 0.65 7.10E+01 0.61E+01 D101300400022 50.56 0.67 7.42E+01 0.64E+01 D101300400023 48.28 0.71 7.60E+01 0.65E+01 D101300400024 45.93 0.71 7.82E+01 0.67E+01 D101300400025 43.84 0.75 7.82E+01 0.67E+01 D101300400026 41.73 0.76 7.67E+01 0.66E+01 D101300400027 39.87 0.30 6.98E+01 0.60E+01 D101300400028 39.44 0.81 6.95E+01 0.60E+01 D101300400029 37.67 0.33 6.49E+01 0.56E+01 D101300400030 35.35 0.36 5.11E+01 0.44E+01 D101300400031 32.92 0.39 3.53E+01 0.30E+01 D101300400032 30.36 0.42 2.42E+01 0.21E+01 D101300400033 28.09 0.45 1.53E+01 0.13E+01 D101300400034 25.68 0.48 9.92E+00 0.87E+00 D101300400035 23.09 0.51 7.39E+00 0.64E+00 D101300400036 20.96 0.55 5.45E+00 0.49E+00 D101300400037 18.61 0.62 5.38E+00 0.49E+00 D101300400038 15.99 0.68 9.61E+00 0.84E+00 D101300400039 12.94 0.80 1.09E+01 0.10E+01 D101300400040 9.28 0.93 6.58E+00 0.60E+00 D101300400041 5.87 1.35 6.23E-01 0.56E-01 D101300400042 ENDDATA 29 0 D101300400043 ENDSUBENT 42 0 D101300499999 SUBENT D1013005 20210818 D136D101300500001 BIB 4 4 D101300500002 REACTION (12-MG-0(P,X)11-NA-24,,SIG) D101300500003 DECAY-DATA (11-NA-24,14.997HR,DG,1368.626,0.999936) D101300500004 ERR-ANALYS (ERR-5) Foil thickness (6%) D101300500005 STATUS (TABLE) Table 3 of Appl.Radiat.Isot.168(2021)109514 D101300500006 ENDBIB 4 0 D101300500007 COMMON 1 3 D101300500008 ERR-5 D101300500009 PER-CENT D101300500010 6. D101300500011 ENDCOMMON 3 0 D101300500012 DATA 4 25 D101300500013 EN EN-RSL-HW DATA ERR-T D101300500014 MEV MEV MB MB D101300500015 66.78 0.50 6.27E+00 0.54E+00 D101300500016 64.46 0.53 6.61E+00 0.57E+00 D101300500017 62.00 0.55 7.23E+00 0.62E+00 D101300500018 59.81 0.57 7.02E+00 0.61E+00 D101300500019 57.54 0.60 7.36E+00 0.63E+00 D101300500020 55.21 0.62 7.53E+00 0.65E+00 D101300500021 52.77 0.65 8.07E+00 0.70E+00 D101300500022 50.56 0.67 8.34E+00 0.72E+00 D101300500023 48.28 0.71 8.10E+00 0.70E+00 D101300500024 45.93 0.71 8.44E+00 0.73E+00 D101300500025 43.84 0.75 8.32E+00 0.72E+00 D101300500026 41.73 0.76 8.25E+00 0.71E+00 D101300500027 39.87 0.30 7.33E+00 0.63E+00 D101300500028 39.44 0.81 7.86E+00 0.68E+00 D101300500029 37.67 0.33 7.20E+00 0.62E+00 D101300500030 35.35 0.36 6.52E+00 0.56E+00 D101300500031 32.92 0.39 5.80E+00 0.50E+00 D101300500032 30.36 0.42 5.48E+00 0.47E+00 D101300500033 28.09 0.45 5.55E+00 0.48E+00 D101300500034 25.68 0.48 5.36E+00 0.46E+00 D101300500035 23.09 0.51 4.61E+00 0.40E+00 D101300500036 20.96 0.55 3.29E+00 0.28E+00 D101300500037 18.61 0.62 1.59E+00 0.14E+00 D101300500038 15.99 0.68 2.39E-01 0.21E-01 D101300500039 12.94 0.80 4.87E-02 0.43E-02 D101300500040 ENDDATA 27 0 D101300500041 ENDSUBENT 40 0 D101300599999 ENDENTRY 5 0 D101399999999