ENTRY O1274 20051002 O025O127400000001 SUBENT O1274001 20051002 O025O127400100001 BIB 14 46 O127400100002 TITLE Experimental study and nuclear model calculations on O127400100003 the Os-192(p,n)Ir-192 reaction. Comparison of reactor O127400100004 and cyclotron production of the therapeutic O127400100005 radionuclide Ir-192. O127400100006 AUTHOR (K.Hilgers, S.Sudar, S.M.Qaim) O127400100007 INSTITUTE (2GERJUL) O127400100008 REFERENCE (J,ARI,63,93,2005) O127400100009 HISTORY (20050513C) O127400100010 (20051002U) Last checking has been done. O127400100011 SAMPLE Thin osmium samples were prepared by electrolytic O127400100012 deposition of the enriched Os-192 on 25-mum Ni-foils O127400100013 (99.9% pure) chemical purityof used osmium- 99.9%. O127400100014 Isotopic composition: O127400100015 84.5% Os-192, O127400100016 15.2% Os-190, O127400100017 0.3% Os-189, O127400100018 the electrolytic deposit of metallic osmium had a massO127400100019 between 1 and 4 mg, which was determined by weighing.O127400100020 The uniformity of the deposit was checked using a O127400100021 microscope. Also the absence of all oxides, which areO127400100022 coloured, could be confirmed. A check via proton O127400100023 activation analysis was done, too. O127400100024 ADD-RES (TTY-C) The integrated yield of Ir-192 was calculated ,O127400100025 assuming a 1 hour irradiation with a proton beam of O127400100026 1 microA. O127400100027 (COMP) The model codes ALICE-IPPE and EMPIRE-II. O127400100028 A comparison of the reactor and cyclotron production O127400100029 methods is given too. O127400100030 DETECTOR (HPGE) O127400100031 MONITOR (22-TI-0(P,X)23-V-48,,SIG) O127400100032 (29-CU-0(P,X)30-ZN-65,,SIG) O127400100033 MONIT-REF (,F.TARKANYI+,R,IAEA-TECDOC-1211,49,2001) O127400100034 FACILITY (CYCLO,2GERJUL) The compact cyclotron CV-28. O127400100035 METHOD (STTA) O127400100036 (CHSEP) O127400100037 (ACTIV) O127400100038 ERR-ANALYS (ERR-T) Total uncertainty in measured cross section. O127400100039 The uncertainty is result of: O127400100040 1. Uncertainty in decay data (1%). O127400100041 2. Uncertainty in cross section of monitor reaction O127400100042 (8-10%). O127400100043 3. Uncertainty in peak area measurement (2-5%). O127400100044 4. Uncertainty in efficiency of the detector (4-6%). O127400100045 5. Uncertainty in target uniformity (3-5%). O127400100046 6. Uncertainty in number of target nuclei (2-5%). O127400100047 STATUS (TABLE) O127400100048 ENDBIB 46 0 O127400100049 NOCOMMON 0 0 O127400100050 ENDSUBENT 49 0 O127400199999 SUBENT O1274002 20051002 O025O127400200001 BIB 5 16 O127400200002 REACTION (76-OS-192(P,N)77-IR-192-G,M+,SIG) O127400200003 RAD-DET (77-IR-192-G,DG) O127400200004 DECAY-DATA (77-IR-192-G,78.83D,DG,316.,0.827,DG,468.,0.478) O127400200005 (77-IR-192-M1,1.45MIN) O127400200006 ERR-ANALYS (EN-ERR) An analysis is not given. O127400200007 COMMENT -By authors: O127400200008 1. The activity obtained was the sum of the ground O127400200009 state and the first isomeric state. Production cross O127400200010 section of second isomer state (241 yr) was not O127400200011 measured. O127400200012 2. The measured data were extrapolated to 100% O127400200013 enrichment of Os-192. O127400200014 3.The uncertainty in the primary proton energy amountedO127400200015 to 0.2-MeV. The uncertainty in the energy effective atO127400200016 each foil increased with the increasing number of foilsO127400200017 and is 0.2-0.8 MeV. O127400200018 ENDBIB 16 0 O127400200019 NOCOMMON 0 0 O127400200020 DATA 4 20 O127400200021 EN EN-ERR DATA ERR-T O127400200022 MEV MEV MB MB O127400200023 18.9 0.2 19. 2. O127400200024 16.8 0.3 21. 3. O127400200025 16. 0.2 28. 4. O127400200026 15. 0.2 32. 4. O127400200027 13.8 0.3 38. 4. O127400200028 13.2 0.4 43. 5. O127400200029 13.1 0.3 41. 4. O127400200030 12.5 0.4 47. 4. O127400200031 11.6 0.6 48. 5. O127400200032 11.4 0.2 50. 6. O127400200033 10.7 0.3 58. 7. O127400200034 9.8 0.4 62. 7. O127400200035 9.1 0.5 67. 8. O127400200036 9.1 0.5 68. 8. O127400200037 8.6 0.5 41. 4. O127400200038 8.6 0.3 36. 4. O127400200039 8.3 0.6 28. 3. O127400200040 8.2 0.8 24. 3. O127400200041 7.3 0.6 8. 1. O127400200042 6.4 0.6 3.6 0.4 O127400200043 ENDDATA 22 0 O127400200044 ENDSUBENT 43 0 O127400299999 ENDENTRY 2 0 O127499999999