ENTRY D4148 20050712 0000D414800000001 SUBENT D4148001 20050712 0000D414800100001 BIB 10 46 D414800100002 TITLE Cross-section measurement of the 169Tm(p,n) reaction D414800100003 for the production of the therapeutic radionuclide D414800100004 169-Yb and comparison with its reactor-based generationD414800100005 AUTHOR (I.Spahn,S.Takacs,Yu.N.Shubin,F.Tarkanyi,H.H.Coenen, D414800100006 S.M.Qaim) D414800100007 INSTITUTE (2GERJUL) Kernforschungsanlage Juelich, Germany D414800100008 (3HUNDEB)Institute of Nuclear Research, Atomki Hungary D414800100009 (4RUSFEI) Fiziko-Energeticheskii Inst., Obninsk D414800100010 REFERENCE (J,ARI,63,235,2005) D414800100011 METHOD (ACTIV,EXTB,STTA,GSPEC) D414800100012 Stacked target technique was used. Irradiations were D414800100013 done in vacuum at 10, 12, 14, 18.5, 20 and 45 MeV at D414800100014 CV28 cyclotron, and the injector cyclotron of COSY D414800100015 synchrotron Julich and MGC20E cyclotron, Debrecen. D414800100016 High resolution gamma spectrometry was applied without D414800100017 chemical separation. D414800100018 The stacks contained besides the target foils Cu D414800100019 monitor foils and Al energy degrader foils. D414800100020 Beam current was measured in Faraday-cup 100-200nA D414800100021 and was also monitored by nuclear reactions on Cu. D414800100022 Energy degradation was calculated by using the D414800100023 tables of Williamson et. al. 1966. D414800100024 Energy scale and beam intensity along the stacks were D414800100025 corrected according to the applied monitor reactions. D414800100026 The whole excitation functions of the monitor reactionsD414800100027 was remeasured and compared to the recommended values. D414800100028 SAMPLE Targets were Tm2O3 thulium(III)oxide powder prepared byD414800100029 sedimentation technique (99.9% pure). D414800100030 Tm2O3 powder was suspended in EtOH/H2O and sedimented D414800100031 onto 100micron thick Al backing, than covered by 10 D414800100032 micron Al. D414800100033 Target layer varied between 10 and 20 mg/cm2. D414800100034 ERR-ANALYS (EN-ERR) The uncertainty of the primary beam 0.3 MeV. D414800100035 (ERR-T) Total errors were given. Correction of the beamD414800100036 was made using the monitor reactions. D414800100037 Contributing errors: D414800100038 sample weighting 1% D414800100039 uniformity of the sample 5% D414800100040 beam intensity 9-11% D414800100041 detector efficiency 3-4% D414800100042 peak area and statistical error 5-6% D414800100043 nuclear data 0.1-1% D414800100044 DETECTOR (HPGE) D414800100045 STATUS Data were taken from Table 2. and D414800100046 (APRVD) approved by S. Takacs. D414800100047 HISTORY (20050712C) D414800100048 ENDBIB 46 0 D414800100049 NOCOMMON 0 0 D414800100050 ENDSUBENT 49 0 D414800199999 SUBENT D4148002 20050712 0000D414800200001 BIB 2 3 D414800200002 REACTION (69-TM-169(P,N)70-YB-169,,SIG,,,EXP) D414800200003 DECAY-DATA (70-YB-169,32.D,DG,63.12,0.437,DG,109.78,0.174, D414800200004 DG,177.21,0.215,DG,197.96,0.349,DG,307.74,0.101) D414800200005 ENDBIB 3 0 D414800200006 NOCOMMON 0 0 D414800200007 DATA 4 27 D414800200008 EN EN-ERR DATA ERR-T D414800200009 MEV MEV MB MB D414800200010 4.8 0.6 0.2 0.1 D414800200011 7.3 0.5 37. 5. D414800200012 7.7 0.5 20. 3. D414800200013 8.1 0.4 134. 17. D414800200014 8.9 0.4 112. 15. D414800200015 9.1 0.4 263. 34. D414800200016 9.6 0.4 184. 24. D414800200017 10.7 0.3 284. 37. D414800200018 11.1 0.3 250. 33. D414800200019 11.4 0.4 291. 38. D414800200020 11.8 0.4 194. 25. D414800200021 12.8 0.3 151. 20. D414800200022 13.4 0.4 125. 16. D414800200023 14.1 0.3 110. 14. D414800200024 14.5 0.4 78. 10. D414800200025 15.0 0.3 87. 11. D414800200026 15.6 0.3 33. 4. D414800200027 16.1 0.3 37. 5. D414800200028 17.2 0.3 34. 5. D414800200029 18.2 0.3 47. 6. D414800200030 22.0 0.8 36. 5. D414800200031 26.1 0.7 34. 4. D414800200032 27.5 0.7 28. 4. D414800200033 32.5 0.5 27. 4. D414800200034 35.6 0.4 25. 3. D414800200035 40.4 0.4 23. 3. D414800200036 44.9 0.2 22. 3. D414800200037 ENDDATA 29 0 D414800200038 ENDSUBENT 37 0 D414800299999 ENDENTRY 2 0 D414899999999