ENTRY D1077 20250816 D107700000001 SUBENT D1077001 20250816 20260228 D107700100001 BIB 16 51 D107700100002 TITLE Cross sections of the 226Ra(p,xn) reactions relevant D107700100003 for 225Ac production D107700100004 AUTHOR (O.Lebeda, K.O.Fialova, L.Ondrak, J.Cervenak, J.Ralis, D107700100005 J.Stursa) D107700100006 REFERENCE (J,NMB,142-143,108995,2025) D107700100007 INSTITUTE (3CZRUJF) D107700100008 FACILITY (CYCLO,3CZRUJF) U-120M cyclotron D107700100009 SAMPLE - 226Ra (4-12 ug, 0.40 mg of Ba-free 226Ra in 4 M D107700100010 nitric acid, evaporated on dryness and dissolved in D107700100011 0.1 M nitric acid) D107700100012 - Al backing foil (99.999% purity, 20 mm diameter, D107700100013 50 um thickness) D107700100014 - Al cover foil (99.999% purity, 20 mm diameter, 25 um D107700100015 thickness) D107700100016 - Ti monitor foil (99.8% purity, 20 mm diameter, D107700100017 11.58 um thickness) D107700100018 - Al catcher foil (99.9% purity) D107700100019 - Ag beam stop (99.95% purity) D107700100020 DECAY-DATA (88-RA-226,1600.YR,DG,186.211,0.03555) D107700100021 MONITOR (22-TI-0(P,X)23-V-48,,SIG) D107700100022 DECAY-MON (23-V-48,15.9735D,DG,983.525,0.9998, D107700100023 DG,1312.106,0.982) D107700100024 MONIT-REF (D0985002,O.Lebeda+,J,NIM/B,480,78,2020) D107700100025 METHOD (ACTIV) Each target stack irradiated for 4-5 h at D107700100026 4-5 uA D107700100027 (STTA) Ti/Ti/Al cover/Ra/Al backing/Ti/Al catcher/Ag D107700100028 (BCINT) Beam current recorded each second during D107700100029 irradiation and slightly corrected by reconstruction D107700100030 of natTi(p,x)48V excitation function if necessary. D107700100031 (CHSEP) Separation of Ac from Ra and Al by solid-phase D107700100032 extraction chromatography D107700100033 (GSPEC) Measured three times at times optimal for D107700100034 quantification of 224Ac (immediately after chemical D107700100035 separation), 226Ac (15-60 h after EOB) and 225Ac D107700100036 (a few days after EOB) D107700100037 DETECTOR (HPGE) Two coaxial HPGe detectors calibrated with a D107700100038 set of standards (241Am,133Ba,152Eu) and mixed D107700100039 standard (241Am, 57Co, 137Cs, 60Co) D107700100040 CORRECTION Beam current adjusted (<2%) to reproduce the D107700100041 Ti(p,x)48V excitation function in Lebeda et al. (2020)D107700100042 ERR-ANALYS (EN-ERR) Uncertainty in beam energy deduced from the D107700100043 measured position of the final beam orbit D107700100044 (ERR-T) Total uncertainty propagated from gamma D107700100045 emission probability and D107700100046 (ERR-1,,3.) detection efficiency (<3%) D107700100047 (ERR-2) beam current (5%) D107700100048 (ERR-3) target areal density (5%) D107700100049 (ERR-S,,10.) net peak area (<10%) D107700100050 STATUS (TABLE,,O.Lebeda+,J,NMB,142-143,108995,2025) Table 2 D107700100051 (APRVD) Proofread by Ondrej Lebeda (2025-08-17) D107700100052 HISTORY (20250816C) On D107700100053 ENDBIB 51 0 D107700100054 COMMON 2 3 D107700100055 ERR-2 ERR-3 D107700100056 PER-CENT PER-CENT D107700100057 5. 5. D107700100058 ENDCOMMON 3 0 D107700100059 ENDSUBENT 58 0 D107700199999 SUBENT D1077002 20250816 20260228 D107700200001 BIB 2 2 D107700200002 REACTION (88-RA-226(P,N)89-AC-226,,SIG) D107700200003 DECAY-DATA (89-AC-226,29.37HR,DG,230.00,0.269) D107700200004 ENDBIB 2 0 D107700200005 NOCOMMON 0 0 D107700200006 DATA 4 6 D107700200007 EN EN-ERR DATA ERR-T D107700200008 MEV MEV MB MB D107700200009 11.94 0.20 4.01 0.44 D107700200010 13.00 0.20 9.37 0.82 D107700200011 14.14 0.20 11.85 0.93 D107700200012 15.22 0.20 13.1 1.1 D107700200013 16.21 0.20 13.7 1.2 D107700200014 17.19 0.20 14.0 1.1 D107700200015 ENDDATA 8 0 D107700200016 ENDSUBENT 15 0 D107700299999 SUBENT D1077003 20250816 20260228 D107700300001 BIB 2 2 D107700300002 REACTION (88-RA-226(P,2N)89-AC-225,,SIG) D107700300003 DECAY-DATA (89-AC-225,9.9179D,DG,440.45,0.2590) D107700300004 ENDBIB 2 0 D107700300005 NOCOMMON 0 0 D107700300006 DATA 4 6 D107700300007 EN EN-ERR DATA ERR-T D107700300008 MEV MEV MB MB D107700300009 11.94 0.20 99.4 7.9 D107700300010 13.00 0.20 279. 22. D107700300011 14.14 0.20 444. 35. D107700300012 15.22 0.20 433. 34. D107700300013 16.21 0.20 335. 26. D107700300014 17.19 0.20 231. 18. D107700300015 ENDDATA 8 0 D107700300016 ENDSUBENT 15 0 D107700399999 SUBENT D1077004 20250816 20260228 D107700400001 BIB 2 2 D107700400002 REACTION (88-RA-226(P,3N)89-AC-224,,SIG) D107700400003 DECAY-DATA (89-AC-224,2.78HR,DG,215.75,0.523) D107700400004 ENDBIB 2 0 D107700400005 NOCOMMON 0 0 D107700400006 DATA 4 4 D107700400007 EN EN-ERR DATA ERR-T D107700400008 MEV MEV MB MB D107700400009 14.14 0.20 15.9 1.4 D107700400010 15.22 0.20 144. 12. D107700400011 16.21 0.20 235. 19. D107700400012 17.19 0.20 517. 43. D107700400013 ENDDATA 6 0 D107700400014 ENDSUBENT 13 0 D107700499999 ENDENTRY 4 0 D107799999999