ENTRY D0165 20040623 0000D016500000001 SUBENT D0165001 20040623 0000D016500100001 BIB 14 50 D016500100002 TITLE Formation of short-lived positron emitters in D016500100003 reactions of protons of energies up to 200 MeV D016500100004 with the target elements carbon, nitrogen and oxygen D016500100005 AUTHOR (K.Kettern, Yu.N.Shubin, G.F.Steyn, T.N.van der Walt, D016500100006 H.H.Coenen, S.M.Qaim) D016500100007 INSTITUTE (2GERJUL,3SAFITH) D016500100008 REFERENCE (J,ARI,60,939,2004) D016500100009 FACILITY (CYCLO,2GERJUL) Irradiations in the low-energy region D016500100010 up to 20MeV were carried out at the compact cyclotron D016500100011 CV28 of FZ Julich. D016500100012 (SYNCH,2GERJUL) Experiments up to 45 MeV were done at D016500100013 the injector of the cooler synchrotron (COSY) of FZ. D016500100014 (CYCLO,2SWTPSI) Irradiations with energies up to 72MeV D016500100015 were performed at the PSI ia Villigen (Switzerland). D016500100016 (CYCLO,3SAFITH) Nine stacks were irradiated at the D016500100017 separated-sector-cyclotron (SSC) of iThemba LABS in D016500100018 Somerset West (South Africa) with primary proton D016500100019 energies of 66, 100, 150 and 200MeV. D016500100020 MONITOR 1(13-AL-27(P,X)11-NA-24,,SIG) D016500100021 (29-CU-0(P,X)30-ZN-62,,SIG) D016500100022 (22-TI-0(P,X)23-V-48,,SIG) The proton fluxes for D016500100023 Ep<100MeV were determined. D016500100024 2(13-AL-27(P,N+3P)11-NA-24,,SIG) for proton energies up D016500100025 to 200 MeV D016500100026 MONIT-REF 1(,Tarkanyi+,R,IAEA-1211,2001) D016500100027 2(,Michel+,J,NP/A,441,617,1985) D016500100028 METHOD (STTA,ACTIV,EXTB) D016500100029 DETECTOR (HPGE) D016500100030 INC-SOURCE (ARAD) The target activity was determined by D016500100031 counting the annihilation gamma-rays from the D016500100032 positron decay of C (T 1/2 = 20.38 min) and D016500100033 13N (T 1/2 = 9.96mm). For complete annihilation of D016500100034 positrons, 2mm thick copper discs were placed on D016500100035 each side of the target. D016500100036 DECAY-DATA (7-N-13,9.96MIN,B+,491.8,0.998) D016500100037 (6-C-11,20.38MIN,B+,385.6,0.998) D016500100038 (9-F-18,109.7MIN,B+,249.8,0.967) D016500100039 From Firestone, R.B., 1996. Table of isotopes. D016500100040 ERR-ANALYS (EN-ERR) Scale error D016500100041 (ERR-T) The total uncertainty in the measured cross D016500100042 section was obtained by combining the individual D016500100043 uncertainties in quadrature. The maior individual D016500100044 uncertainties were: D016500100045 - decay curve analysis (11C: 15%, 13N: 25%), D016500100046 - monitor reactions (10%), D016500100047 - detector efficiency (5-8%), D016500100048 - peak area analysis and counting statistics(5-9%), D016500100049 - the decay data used (3%). D016500100050 STATUS (TABLE)Tables from the article D016500100051 HISTORY (20040623C) SD D016500100052 ENDBIB 50 0 D016500100053 NOCOMMON 0 0 D016500100054 ENDSUBENT 53 0 D016500199999 SUBENT D0165002 20040623 0000D016500200001 BIB 2 2 D016500200002 REACTION (6-C-0(P,X)6-C-11,,SIG) D016500200003 SAMPLE Disc of Graphite of 99.999% purity D016500200004 ENDBIB 2 0 D016500200005 NOCOMMON 0 0 D016500200006 DATA 4 19 D016500200007 EN EN-ERR DATA ERR-T D016500200008 MEV MEV MB MB D016500200009 12.3 2.0 0.3 0.1 D016500200010 16.0 2.0 1.1 0.2 D016500200011 19.0 1.0 8.5 2.0 D016500200012 30.8 3.0 94. 19. D016500200013 33.5 2.5 108. 22. D016500200014 36.7 2.5 105. 21. D016500200015 39.2 2.0 118. 24. D016500200016 42.1 1.5 98. 20. D016500200017 44.9 1.0 106. 21. D016500200018 54.8 2.5 102. 20. D016500200019 55.1 2.5 78. 16. D016500200020 60.7 2.0 103. 22. D016500200021 60.9 2.0 81. 16. D016500200022 66.1 1.5 108. 22. D016500200023 66.4 1.5 79. 16. D016500200024 71.5 1.0 85. 17. D016500200025 177.0 3.0 42. 8. D016500200026 185.9 2.0 43. 9. D016500200027 199.8 1.0 43. 9. D016500200028 ENDDATA 21 0 D016500200029 ENDSUBENT 28 0 D016500299999 SUBENT D0165003 20040623 0000D016500300001 BIB 2 2 D016500300002 REACTION (7-N-0(P,X)6-C-11,,SIG) D016500300003 SAMPLE Disc of Si3N14 (Si - 60.1%; N - 39.9%) D016500300004 ENDBIB 2 0 D016500300005 NOCOMMON 0 0 D016500300006 DATA 4 23 D016500300007 EN EN-ERR DATA ERR-T D016500300008 MEV MEV MB MB D016500300009 6.8 4.0 108. 22. D016500300010 13.6 2.0 91. 18. D016500300011 18.0 1.5 61. 12. D016500300012 27.9 2.5 25. 5. D016500300013 29.6 3.0 15. 3. D016500300014 33.5 2.5 16. 3. D016500300015 33.9 2.5 19. 4. D016500300016 37.2 2.0 16. 3. D016500300017 42.8 1.0 17. 3. D016500300018 50.6 3.0 17. 3. D016500300019 54.1 2.5 29. 6. D016500300020 58.1 2.0 19. 4. D016500300021 59.2 2.0 28. 6. D016500300022 64.9 1.0 17. 3. D016500300023 70.3 1.0 26. 5. D016500300024 88.9 3.0 15. 3. D016500300025 94.0 2.0 14. 3. D016500300026 98.8 0.5 15. 3. D016500300027 133.8 3.0 17. 3. D016500300028 145.2 1.5 15. 3. D016500300029 175.1 3.0 13. 3. D016500300030 187.54 2.0 12. 4. D016500300031 200.7 1.0 14. 3. D016500300032 ENDDATA 25 0 D016500300033 ENDSUBENT 32 0 D016500399999 SUBENT D0165004 20040623 0000D016500400001 BIB 2 2 D016500400002 REACTION (7-N-0(P,X)7-N-13,,SIG) D016500400003 SAMPLE Disc of Si3N14 (Si - 60.1%; N - 39.9%) D016500400004 ENDBIB 2 0 D016500400005 NOCOMMON 0 0 D016500400006 DATA 4 11 D016500400007 EN EN-ERR DATA ERR-T D016500400008 MEV MEV MB MB D016500400009 23.4 3.0 32. 9. D016500400010 27.8 3.0 28. 8. D016500400011 29.6 3.0 21. 6. D016500400012 33.5 2.5 13. 4. D016500400013 36.0 1.0 12. 4. D016500400014 37.2 2.0 8. 2. D016500400015 39.7 1.5 16. 5. D016500400016 42.8 1.0 7. 2. D016500400017 42.9 1.0 6. 2. D016500400018 58.1 2.0 2. 1.0 D016500400019 88.9 3.0 0.8 0.2 D016500400020 ENDDATA 13 0 D016500400021 ENDSUBENT 20 0 D016500499999 SUBENT D0165005 20040623 0000D016500500001 BIB 2 2 D016500500002 REACTION (8-O-0(P,X)6-C-11,,SIG) D016500500003 SAMPLE Monocrystal of SiO2 (Si - 46.7%; O - 53.3%) D016500500004 ENDBIB 2 0 D016500500005 NOCOMMON 0 0 D016500500006 DATA 4 11 D016500500007 EN EN-ERR DATA ERR-T D016500500008 MEV MEV MB MB D016500500009 54.4 2.5 17. 3. D016500500010 59.1 1.5 18. 4. D016500500011 60.8 1.5 19. 4. D016500500012 65.7 1.0 22. 4. D016500500013 65.8 1.0 21. 4. D016500500014 71.1 1.0 18. 4. D016500500015 89.6 3.0 17. 3. D016500500016 94.5 2.0 17. 3. D016500500017 182.8 2.0 13. 3. D016500500018 189.2 2.0 12. 2. D016500500019 199.4 1.0 14. 3. D016500500020 ENDDATA 13 0 D016500500021 ENDSUBENT 20 0 D016500599999 SUBENT D0165006 20040623 0000D016500600001 BIB 2 2 D016500600002 REACTION (8-O-0(P,X)7-N-13,,SIG) D016500600003 SAMPLE Monocrystal of SiO2 (Si - 46.7%; O - 53.3%) D016500600004 ENDBIB 2 0 D016500600005 NOCOMMON 0 0 D016500600006 DATA 4 8 D016500600007 EN EN-ERR DATA ERR-T D016500600008 MEV MEV MB MB D016500600009 54.4 2.5 3.9 1.0 D016500600010 59.1 1.5 4.6 1.0 D016500600011 65.7 1.0 3.9 1.0 D016500600012 89.6 3.0 5.2 2.0 D016500600013 94.5 2.0 3.8 2.0 D016500600014 182.8 2.0 2.3 1.0 D016500600015 189.2 2.0 3.9 1.0 D016500600016 199.4 1.0 4.6 1.0 D016500600017 ENDDATA 10 0 D016500600018 ENDSUBENT 17 0 D016500699999 ENDENTRY 6 0 D016599999999