ENTRY B0090 20011220 0000B009000000001 SUBENT B0090001 20011220 0000B009000100001 BIB 14 52 B009000100002 TITLE Iodine-123 Production For Radiopharmaceuticals B009000100003 Excitation Functions of the Te-124(P,2N)I-123 and B009000100004 Te-124(P,N)I-124 Reactions and the Effect of Target B009000100005 Enrichment on Radionuclidic Purity B009000100006 AUTHOR (K.KONDO, R.M.LAMBRECHT, A.P.WOLF) B009000100007 INSTITUTE (1USABNL).Chemistry Department B009000100008 REFERENCE (J,ARI,28,395,1977) B009000100009 FACILITY (ISOCY,1USABNL) B009000100010 METHOD (EXTB,STTA,EDEG,MOSEP,BCINT) B009000100011 The Energy Degradation in the Stack was Calculated B009000100012 According to C.F.Williamson Et Al.,Cea-R3042(1966). B009000100013 Cu-Monitor Foils of 12.57 Mg/Cm**2 were Used. B009000100014 The Integrated Beam Charge Determined by Monitoring B009000100015 Agreed Within 1% with the Value Obtained with the B009000100016 Faraday Cup. B009000100017 Typical Irradiations Lasted 200 Sec at 0.5 Microamps. B009000100018 SAMPLE Stacks of Self-Supporting Polystyrene Films in Which B009000100019 1.05+-0.01 Mg/Cm**2 Enriched Te-124 Powder were B009000100020 Uniformly Suspended, Interspersed with Al and Cu Beam B009000100021 Degrader Foils. The Te-Concentration in Each Target B009000100022 Was Determined at the Conclusion of the Experiment B009000100023 By X-Ray Fluorescence Spectrometry. Separate Sets B009000100024 Of Measurements were Performed with Targets Having B009000100025 The Following Differing Isotopic Compositions (IN %) B009000100026 1.Te-120 < 0.002, Te-122 < 0.003, Te-123 0.006, B009000100027 Te-124 99.87, Te-125 0.095, Te-126 0.020, Te-128 < B009000100028 0.010, Te-130 < 0.008. Other Impurities were < 1%. B009000100029 2.Te-120 < 0.02, Te-122 0.49, Te-123 0.11, B009000100030 Te-124 91.86, Te-125 3.17, Te-126 1.81, Te-128 1.55, B009000100031 Te-130 1.05. Other Impurities were Less Than 1%. B009000100032 DETECTOR (GELI) B009000100033 The Dead-Time Losses were Always Less Than 10%. B009000100034 MONITOR (29-CU-63(P,N)30-ZN-63,,SIG,,,EXP) B009000100035 MONIT-REF (B0057002,R.COLLE+,J,PR/C,9,1819,1974) B009000100036 DECAY-MON (30-ZN-63,38.0MIN,DG,670.,0.0847,DG,962.,0.0668) B009000100037 ERR-ANALYS (EN-ERR) The Uncertainty in the Incident Proton Beam B009000100038 Energy was Estimated As 1%. B009000100039 (DATA-ERR) The Counting Error at the 95.5% Confidence B009000100040 Level was Less Than 3%. The Error Resulting B009000100041 From the Lack of Uniformity in Te-Thickness in the B009000100042 Target was Less Than 2%. Recoil Losses of the B009000100043 Product Nuclei were Small and Therefore Negleted. B009000100044 Typical Overall Errors were in the Order of 12% B009000100045 Taking Into Account Systematical Errors Due to E.G. B009000100046 Detector Efficiency and Nuclear Decay Data. B009000100047 ADD-RES Production Conditions For J-123 Optimized with Respect B009000100048 To Yield and Radionuclidic Purity are Discussed. B009000100049 HISTORY (19781116C)Lakw B009000100050 (19940711A) Some Corrections have Been Included by B009000100051 CAJAD B009000100052 (19980610A) Lower Case. Decay-Data are Checked. B009000100053 (20011010U) Last checking has been done. B009000100054 ENDBIB 52 0 B009000100055 NOCOMMON 0 0 B009000100056 ENDSUBENT 55 0 B009000199999 SUBENT B0090002 20011220 0000B009000200001 BIB 4 24 B009000200002 REACTION 1(52-TE-124(P,N)53-I-124,,SIG,,FCT,EXP) B009000200003 Measured with a Target Having 99.87% Abundance B009000200004 Of Te-124 (SEE UNDER SAMPLE). The Cross Sections are B009000200005 Obviously not Corrected For 100% Te-124, Since B009000200006 A Comparison with the Second Target of Different Te-124B009000200007 Abundance shall be Performed. B009000200008 Contributions from Other Te-Isotopes are Certainly B009000200009 Negligible Due to Their Small Abundances in the B009000200010 Isotopic Composition Used (SEE UNDER SAMPLE). B009000200011 2(52-TE-124(P,N)53-I-124,,SIG,,FCT,EXP) B009000200012 Measured with a Target Having 91.86% Abundance B009000200013 Of Te-124 (SEE UNDER SAMPLE). The Cross Sections are B009000200014 Obviously not Corrected For 100% Abundance of B009000200015 Te-124, Since a Comparison with the Other Target of B009000200016 Different Te-124 Content shall be Performed. B009000200017 Deviations from the Results with the Higher Enriched B009000200018 Target are Probably Due to the Larger Amount of Other B009000200019 Te-Isotopes Leading to Competing Reactions Producing B009000200020 The Same Residual Nucleus, Especially the Te-125 B009000200021 Content. B009000200022 RAD-DET (53-I-124,DG) B009000200023 DECAY-DATA (53-I-124,4.17D,DG,603.,0.67) B009000200024 COMMENT - By Compiler of CAJAD - According to ENSDF 603. KeV B009000200025 Abundance is 0.605. B009000200026 ENDBIB 24 0 B009000200027 NOCOMMON 0 0 B009000200028 DATA 6 29 B009000200029 EN EN-ERR DATA 1DATA-ERR 1DATA 2DATA-ERR 2B009000200030 MEV MEV MB MB MB MB B009000200031 9.95 1.1 115.9 18.8 B009000200032 12.2 0.8 237.6 28.5B009000200033 12.45 0.79 308.9 38.8 B009000200034 13.33 0.75 419.1 33.9B009000200035 14.34 0.72 440.6 24.2B009000200036 14.54 0.72 455.5 29.6 B009000200037 16.22 0.7 445.6 33.4B009000200038 16.35 0.7 194.9 16.2 B009000200039 17.42 0.59 376.8 26.4B009000200040 17.74 0.55 180.7 17.B009000200041 18.82 0.45 84.8 13.9 B009000200042 19.04 0.43 167.3 23.6B009000200043 20.18 0.41 117. 14.B009000200044 20.86 0.41 65.6 4. B009000200045 21.34 0.4 87.7 7.2B009000200046 22.38 0.4 63.9 6.7B009000200047 22.58 0.4 68.5 8.9B009000200048 22.65 0.4 53.8 5.8 B009000200049 24.1 0.37 30.5 8.2 B009000200050 24.44 0.37 70.5 8.7B009000200051 24.5 0.37 74.4 5.9B009000200052 25.36 0.34 37.3 15.6 B009000200053 25.62 0.34 59.6 8.3B009000200054 25.64 0.34 86.8 10.5B009000200055 26.43 0.34 34.9 6.8 B009000200056 27.4 0.3 66.1 10.9B009000200057 28.19 0.3 43.7 11.4 B009000200058 29.12 0.29 43.6 9.6B009000200059 29.18 0.29 32.4 7.8B009000200060 ENDDATA 31 0 B009000200061 ENDSUBENT 60 0 B009000299999 SUBENT B0090003 20011220 0000B009000300001 BIB 3 22 B009000300002 REACTION 1(52-TE-124(P,2N)53-I-123,,SIG,,FCT,EXP) B009000300003 Measured with a Target Having 99.87% Abundance B009000300004 Of Te-124 (SEE UNDER SAMPLE). The Cross Sections are B009000300005 Obviously not Corrected For 100% Te-124, Since B009000300006 A Comparison with the Second Target of Different Te-124B009000300007 Abundance shall be Performed. B009000300008 Contributions from Other Te-Isotopes are Certainly B009000300009 Negligible Due to Their Small Abundances in the B009000300010 Isotopic Composition Used (SEE UNDER SAMPLE). B009000300011 2(52-TE-124(P,2N)53-I-123,,SIG,,FCT,EXP) B009000300012 Measured with a Target Having 91.86% Abundance B009000300013 Of Te-124 (SEE UNDER SAMPLE). The Cross Sections are B009000300014 Obviously not Corrected For 100% Abundance of Te-124, B009000300015 Since a Comparison with the Other Target of Different B009000300016 Te-124 Content shall be Performed. B009000300017 Deviations from the Results with the Higher Enriched B009000300018 Target are Probably Due to the Larger Amount of Other B009000300019 Te-Isotopes Leading to Competing Reactions Producing B009000300020 The Same Residual Nucleus, Especially the Te-125 B009000300021 Content. B009000300022 RAD-DET (53-I-123,DG) B009000300023 DECAY-DATA (53-I-123,13.3HR,DG,159.,0.83) B009000300024 ENDBIB 22 0 B009000300025 NOCOMMON 0 0 B009000300026 DATA 6 28 B009000300027 EN EN-ERR DATA 1DATA-ERR 1DATA 2DATA-ERR 2B009000300028 MEV MEV MB MB MB MB B009000300029 12.2 0.8 5.8 6.B009000300030 12.45 0.79 24.5 5.6 B009000300031 13.33 0.75 53.7 18.7B009000300032 14.34 0.72 52.9 12.7B009000300033 14.54 0.72 160.6 6.4 B009000300034 16.22 0.7 515.3 41.2B009000300035 16.35 0.7 427.7 51.1 B009000300036 17.42 0.59 512.7 65.4B009000300037 17.74 0.55 615.4 67.7B009000300038 18.82 0.45 630.9 70.5 B009000300039 19.04 0.43 740.2 50.3B009000300040 20.18 0.41 912.6 77.6B009000300041 20.86 0.41 889.6 69.5 B009000300042 21.34 0.4 904.1 45.2B009000300043 22.38 0.4 867.8 91.1B009000300044 22.58 0.4 838.8 98.9B009000300045 22.65 0.4 1011.4 59.6 B009000300046 24.1 0.37 914.4 45.7 B009000300047 24.44 0.37 1037.7 103.8B009000300048 24.5 0.37 1137.8 68.2B009000300049 25.36 0.34 1017.9 107. B009000300050 25.62 0.34 843.5 70.2B009000300051 25.64 0.34 1066.4 111.5B009000300052 26.43 0.34 649.8 68.8 B009000300053 27.4 0.3 615. 37.8B009000300054 28.19 0.3 436.2 34.9 B009000300055 29.12 0.29 392.3 51.B009000300056 29.18 0.29 99.5 19.9B009000300057 ENDDATA 30 0 B009000300058 ENDSUBENT 57 0 B009000399999 ENDENTRY 3 0 B009099999999