ENTRY D4237 20190823 D121D423700000001 SUBENT D4237001 20190823 D121D423700100001 BIB 14 81 D423700100002 TITLE The isolation of 133Ba produced by proton-induced D423700100003 reactions on Cs using cation exchange chromatography D423700100004 AUTHOR (N.P.van der Meulen, G.F.Steyn, T.N.van der Walt, D423700100005 F.Szelecsenyi, Z.Kovacs, H.G.Raubenheimer) D423700100006 INSTITUTE (3SAFSTL,3SAFITH,3HUNDEB) D423700100007 REFERENCE (J,JRN,285,491,2010) D423700100008 #doi:10.1007/s10967-010-0613-6 D423700100009 SAMPLE Targets of nominally 1.0 g in weight with an area D423700100010 thickness of 2.36 g/cm2 were prepared by compacting D423700100011 anhydrous CsF powder (99.99%, Sigma-Aldrich, USA) in aD423700100012 punch-and-die set using a hydraulic press. D423700100013 FACILITY (CYCLO,3HUNDEB) 20 MeV D423700100014 DETECTOR (HPGE) D423700100015 METHOD (ACTIV,EDEG,EXTB,GSPEC,SITA) D423700100016 The target discs were thick enough to completely stop D423700100017 the beam at the primary proton energy 17.5 MeV. D423700100018 During bombardment, each target had a Cu monitor foil D423700100019 in front with a nominal thickness of 0.025 mm. D423700100020 The incident energy on target was adjusted by means of D423700100021 Al degrader foils of various thicknesses located D423700100022 upstream from the monitor foils and targets. D423700100023 Each bombardment lasted about 85 min at a beam current D423700100024 of nominally 50 nA. D423700100025 The targets were bombarded in a small target holder D423700100026 mounted on the end of an external beamline, D423700100027 electrically insulated. D423700100028 As CsF is very hygroscopic, the targets were kept in a D423700100029 vacuum oven at a temperature of 150 C until shortly D423700100030 before irradiation. D423700100031 The targets were in a vacuum environment during D423700100032 bombardment. D423700100033 Following irradiation, each activated CsF disc was D423700100034 dissolved in 3 mL of water in a standard glass serum D423700100035 vial, that constituted the counting sources. D423700100036 Two identical fractions of the 133Ba solution were D423700100037 prepared into sources, a source having a point D423700100038 geometry and the other made up into a 3 mL solution. D423700100039 The two specially prepared 133Ba sources were identicalD423700100040 in strength. D423700100041 The ratio of their respective detector responses D423700100042 provided a correction factor for the different D423700100043 counting geometry and the self-absorption in the D423700100044 liquid volume and glass walls. D423700100045 Decay data were taken from Firestone and Eckstrom, D423700100046 Table of radioactive isotopes, version 2.1 D423700100047 http://ie.lbl.gov/toi. D423700100048 The energy loss in each foil and target were calculatedD423700100049 based on the stopping power formulae of D423700100050 Anderson and Ziegler. D423700100051 MONITOR (29-CU-0(P,X)30-ZN-65,,SIG) D423700100052 MONIT-REF (,F.Tarkanyi+,R,IAEA-NDS-1211,2001) Chapter 4 D423700100053 ERR-ANALYS (EN-ERR) The uncertainty in energy of each measured D423700100054 data point was estimated from the uncertainty in D423700100055 incident beam energy, foil thickness and path length D423700100056 straggling, the latter obtained from a compilation by D423700100057 Janni. D423700100058 (DATA-ERR) The total uncertainties in the measured D423700100059 cross sections and yields were obtained by summing D423700100060 all the contributing uncertainties in quadrature and D423700100061 are expressed as standard uncertainties. D423700100062 The uncertainties due to counting statistics and photo-D423700100063 peak integration were generally negligible <1%. D423700100064 In the case of the liquid sources, an additional D423700100065 uncertainty of 2% was adopted for the detector D423700100066 efficiency, resulting from the experimental D423700100067 correction factor for the source geometry. D423700100068 The systematic uncertainty was estimated to be about D423700100069 7%, including the D423700100070 (ERR-1) uncertainty in detector efficiency (5%) D423700100071 (ERR-2) beam current integration (3%) D423700100072 (ERR-3) counting geometry (2%) D423700100073 (ERR-4) decay corrections (2%) D423700100074 (ERR-5) Foil thicknesses and uniformity (2%) D423700100075 STATUS (APRVD) by F. Szelecsenyi 2011-01-13 D423700100076 (TABLE) Table 1 of J.Radioanal.Nucl.Chem.285(2010)491 D423700100077 COMMENT Deon Steyn (2019-07-13): The physical thick target D423700100078 yield is given. D423700100079 HISTORY (20110111C) TS D423700100080 (20120502U) On. SAMPLE: Free text corrected D423700100081 (20190823A) SD: REACTION code updated according to new D423700100082 EXFOR rules in Subents 002, 003. COMMENT added. D423700100083 ENDBIB 81 0 D423700100084 COMMON 5 3 D423700100085 ERR-1 ERR-2 ERR-3 ERR-4 ERR-5 D423700100086 PER-CENT PER-CENT PER-CENT PER-CENT PER-CENT D423700100087 5. 3. 2. 2. 2. D423700100088 ENDCOMMON 3 0 D423700100089 ENDSUBENT 88 0 D423700199999 SUBENT D4237002 20190823 D121D423700200001 BIB 4 6 D423700200002 REACTION (55-CS-CMP(P,X)56-BA-133-G,,TTY,,PHY) D423700200003 SAMPLE CsF target material. D423700200004 DECAY-DATA (56-BA-133-G,10.51YR,DG,302.85,0.1833, D423700200005 DG,356.02,0.6205) D423700200006 HISTORY (20190823A) SD: SF1=Cs-133 -> Cs-CMP, SF3=N -> X in D423700200007 REACTION code. D423700200008 ENDBIB 6 0 D423700200009 NOCOMMON 0 0 D423700200010 DATA 4 4 D423700200011 EN EN-ERR DATA DATA-ERR D423700200012 MEV MEV KBQ/MUAHR KBQ/MUAHR D423700200013 17.10 0.35 23.16 1.63 D423700200014 13.03 0.45 17.86 1.26 D423700200015 9.06 0.54 4.48 0.32 D423700200016 6.11 0.71 0.149 0.11 D423700200017 ENDDATA 6 0 D423700200018 ENDSUBENT 17 0 D423700299999 SUBENT D4237003 20190823 D121D423700300001 BIB 6 9 D423700300002 REACTION (55-CS-CMP(P,X)56-BA-133-G,,TTY,,PHY,DERIV) D423700300003 SAMPLE CsF target material. D423700300004 DECAY-DATA (56-BA-133-G,10.51YR,DG,302.85,0.1833, D423700300005 DG,356.02,0.6205) D423700300006 ANALYSIS Derived by considering stopping power and D423700300007 number of target atom (Cs) in the sample material D423700300008 STATUS (DEP,D4237002) Measured result for CsF target D423700300009 HISTORY (20190823A) SD: SF1=Cs-133 -> Cs-CMP, SF3=N -> X in D423700300010 REACTION code. D423700300011 ENDBIB 9 0 D423700300012 NOCOMMON 0 0 D423700300013 DATA 4 4 D423700300014 EN EN-ERR DATA DATA-ERR D423700300015 MEV MEV KBQ/MUAHR KBQ/MUAHR D423700300016 17.10 0.35 20.43 1.43 D423700300017 13.03 0.45 15.75 1.11 D423700300018 9.06 0.54 3.95 0.28 D423700300019 6.11 0.71 0.131 0.1 D423700300020 ENDDATA 6 0 D423700300021 ENDSUBENT 20 0 D423700399999 SUBENT D4237004 20110111 D076D423700400001 BIB 5 7 D423700400002 REACTION (55-CS-133(P,N)56-BA-133-G,,TTY,,PHY,DERIV) D423700400003 SAMPLE CsF target material. D423700400004 DECAY-DATA (56-BA-133-G,10.51YR,DG,302.85,0.1833, D423700400005 DG,356.02,0.6205) D423700400006 ANALYSIS Derived by considering stopping power and D423700400007 number of target atom (Cs) in the sample material D423700400008 STATUS (DEP,D4237002) Measured result for CsF target D423700400009 ENDBIB 7 0 D423700400010 NOCOMMON 0 0 D423700400011 DATA 4 4 D423700400012 EN EN-ERR DATA DATA-ERR D423700400013 MEV MEV KBQ/MUAHR KBQ/MUAHR D423700400014 17.10 0.35 28.35 1.99 D423700400015 13.03 0.45 21.86 1.53 D423700400016 9.06 0.54 5.48 0.39 D423700400017 6.11 0.71 1.82 0.13 D423700400018 ENDDATA 6 0 D423700400019 ENDSUBENT 18 0 D423700499999 ENDENTRY 4 0 D423799999999