ENTRY D0168 20040623 0000D016800000001 SUBENT D0168001 20040623 0000D016800100001 BIB 14 45 D016800100002 TITLE The natBr(p,x)73,75Se Nuclear Processes: D016800100003 A convenient route for the production of radioselenium D016800100004 tracers relevant to amino acid labelling D016800100005 AUTHOR (M.Fassbender,D.de Villiers,M.Nortier,N.van der Walt) D016800100006 INSTITUTE (3SAFNAC) D016800100007 REFERENCE (J,ARI,54,905,2001) D016800100008 METHOD (STTA,ACTIV,EXTB) D016800100009 MONITOR 1(13-AL-27(P,X)11-NA-22,,SIG) D016800100010 2(29-CU-0(P,X)30-ZN-62,,SIG) D016800100011 Both for monitoring proton flux. D016800100012 MONIT-REF 1(,Steyn+,J,ARI,41,315,1990) D016800100013 2(,Mills+,J,ARI,43,1019,1992) D016800100014 FACILITY (CYCLO) The external beam of the separated-sector D016800100015 cyclotron facility at NAC. D016800100016 SAMPLE Stacks consisted of sandwiched KBr pellets, each D016800100017 followed by monitor foils ofAl (0.0679 g/cm2) and D016800100018 Cu (0.118 and 0.0500 g/cm2 for protons < 40MeV). D016800100019 Pellets (0.628 and 0.314g, 10mm radius, for D016800100020 protons <40 MeV) were prepared from KBr salt powder D016800100021 (purity 99.5%) pressed into tablets and sandwiched D016800100022 between two thin (0.00461 g/cm2) Al foils. D016800100023 DETECTOR (HPGE) The radioactivity of the reaction residuals D016800100024 in each sample was determined non-destructively by D016800100025 gamma-ray spectrometry using an intrinsic HPGe detectorD016800100026 with a thin Be window, a relative efficiency of ~25% D016800100027 and a resolution of ~2.1keV FWHM at 1.33MeV. D016800100028 DECAY-DATA Selenium radioisotopes were identified using decay D016800100029 data by Firestone (1996) D016800100030 ERR-ANALYS (ERR-T) The overall uncertainty in the calculated D016800100031 cross-section values was taken as the square root of D016800100032 the sum of the squares of the following individual D016800100033 uncertainties: D016800100034 - foil thickness (1%), D016800100035 - peak fitting (1%), D016800100036 - counting geometry (1%), D016800100037 - detector efficiency (5%), D016800100038 - decay correction (1%), D016800100039 - beam current integration (6%), D016800100040 summing up to a statistical subtotal of 8.1%. D016800100041 Furthermore, beam loss correction and counting D016800100042 statistics (both variable) were taken into account. D016800100043 The statistical total, thus, amounts to a maximum D016800100044 of 39%. D016800100045 STATUS (TABLE)Tables from the article D016800100046 HISTORY (20040623C) SD D016800100047 ENDBIB 45 0 D016800100048 NOCOMMON 0 0 D016800100049 ENDSUBENT 48 0 D016800199999 SUBENT D0168002 20040623 0000D016800200001 BIB 2 2 D016800200002 REACTION (35-BR-0(P,X)34-SE-75,CUM,SIG) D016800200003 DECAY-DATA (34-SE-75,119.8D,DG,136.0,0.958) D016800200004 ENDBIB 2 0 D016800200005 NOCOMMON 0 0 D016800200006 DATA 3 26 D016800200007 EN DATA ERR-T D016800200008 MEV MB MB D016800200009 100.0 108. 9.1 D016800200010 95.7 106. 8.9 D016800200011 91.2 109. 9.2 D016800200012 87.1 104. 8.7 D016800200013 82.9 101. 8.5 D016800200014 79.2 108. 9.1 D016800200015 75.4 108. 8.9 D016800200016 72.2 111. 9.3 D016800200017 68.9 117. 9.7 D016800200018 65.7 115. 9.3 D016800200019 62.5 104. 8.4 D016800200020 59.1 86.5 7.0 D016800200021 55.5 60.0 4.9 D016800200022 51.7 41.7 3.4 D016800200023 48.6 29.5 2.4 D016800200024 45.3 19.8 1.6 D016800200025 41.8 13.2 1.1 D016800200026 39.2 7.60 1.8 D016800200027 36.6 9.80 1.7 D016800200028 34.2 18.0 2.3 D016800200029 31.5 23.5 2.5 D016800200030 28.5 27.8 2.8 D016800200031 25.3 28.9 2.9 D016800200032 21.6 20.7 2.3 D016800200033 18.9 11.8 1.6 D016800200034 16.1 2.50 0.69 D016800200035 ENDDATA 28 0 D016800200036 ENDSUBENT 35 0 D016800299999 SUBENT D0168003 20040623 0000D016800300001 BIB 2 2 D016800300002 REACTION (35-BR-0(P,X)34-SE-73,CUM,SIG) D016800300003 DECAY-DATA (34-SE-73,7.15HR,DG,360.8,0.977) D016800300004 ENDBIB 2 0 D016800300005 NOCOMMON 0 0 D016800300006 DATA 3 17 D016800300007 EN DATA ERR-T D016800300008 MEV MB MB D016800300009 100.0 24.4 2.0 D016800300010 95.7 22.4 1.8 D016800300011 91.2 21.4 1.7 D016800300012 87.1 18.6 1.5 D016800300013 82.9 16.1 1.3 D016800300014 79.2 13.7 1.1 D016800300015 75.4 11.7 1.0 D016800300016 72.2 10.4 0.9 D016800300017 68.9 10.4 0.9 D016800300018 65.7 11.1 0.9 D016800300019 62.5 13.4 1.1 D016800300020 59.1 16.9 1.4 D016800300021 55.5 18.0 1.5 D016800300022 51.7 15.8 1.3 D016800300023 48.6 11.7 1.0 D016800300024 45.3 5.3 0.4 D016800300025 41.8 1.6 0.1 D016800300026 ENDDATA 19 0 D016800300027 ENDSUBENT 26 0 D016800399999 SUBENT D0168004 20040623 0000D016800400001 BIB 2 2 D016800400002 REACTION (35-BR-0(P,X)34-SE-72,CUM,SIG) D016800400003 DECAY-DATA (34-SE-72,8.40D,DG,45.81,1.) D016800400004 ENDBIB 2 0 D016800400005 NOCOMMON 0 0 D016800400006 DATA 3 14 D016800400007 EN DATA ERR-T D016800400008 MEV MB MB D016800400009 100.0 7.17 0.75 D016800400010 95.7 6.82 0.73 D016800400011 91.2 5.94 0.65 D016800400012 87.1 5.63 0.64 D016800400013 82.9 4.49 0.56 D016800400014 79.2 4.97 0.57 D016800400015 75.4 6.50 0.63 D016800400016 72.2 7.35 0.70 D016800400017 68.9 7.41 0.70 D016800400018 65.7 6.19 0.51 D016800400019 62.5 4.42 0.36 D016800400020 59.1 2.42 0.20 D016800400021 55.5 0.677 0.062 D016800400022 51.7 0.107 0.016 D016800400023 ENDDATA 16 0 D016800400024 ENDSUBENT 23 0 D016800499999 ENDENTRY 4 0 D016899999999