ENTRY D4230 20100901 D074D423000000001 SUBENT D4230001 20100901 D074D423000100001 BIB 17 75 D423000100002 TITLE Experimental study of the excitation functions of D423000100003 proton induced nuclear reactions on 167Er for D423000100004 production of medically relevant 167Tm D423000100005 AUTHOR (F.Tarkanyi,A.Hermanne,S.Takacs,B.Kiraly,I.Spahn, D423000100006 A.V.Ignatyuk) D423000100007 INSTITUTE (3HUNDEB,2BLGVUB,2GERJUL,4RUSFEI) D423000100008 REFERENCE (J,ARI,68,250,2010) D423000100009 #doi:10.1016/j.apradiso.2009.10.043 D423000100010 FACILITY (CYCLO,2BLGVUB) CGR-560 cyclotron D423000100011 SAMPLE The target samples were prepared of highly enriched D423000100012 erbium-oxide, 167Er2O3 powder by sedimentation onto D423000100013 Al backing of 13.0 mm diameter and 0.1 mm thickness. D423000100014 The samples were covered by 0.01 mm thick Al D423000100015 wrapping for protection. D423000100016 Thickness of targets: 12-17 mg/cm2, D423000100017 number of samples: 12. D423000100018 Characteristics of the erbium-oxide powder: D423000100019 chemical purity: 99.6%; D423000100020 isotopic composition of erbium (atom%): D423000100021 162Er<=0.06%, D423000100022 164Er<=0.06%, D423000100023 166Er=1.14%, D423000100024 167Er=95.6%, D423000100025 168Er=3.08%, D423000100026 170Er=0.18%. D423000100027 METHOD (ACTIV,EDEG,EXTB,GSPEC,STTA) D423000100028 Two stacks were bombarded with 16 MeV protons, D423000100029 irradiation time: 1.0 h, D423000100030 beam intensity: 100 nA. D423000100031 Both stacks contained six erbium-oxide samples D423000100032 alternating with eight Ti monitor foils and were D423000100033 inserted in a Faraday-cup-like target holder equipped D423000100034 with a long collimator and secondary electron D423000100035 suppressing device. D423000100036 The beam intensity was controlled by integration of theD423000100037 deposited charge in the target holder. D423000100038 The extracted beam energy was estimated from the D423000100039 accelerator settings. D423000100040 The samples were measured non-destructively, D423000100041 without chemical separation D423000100042 several times after end of bombardment. D423000100043 REL-REF (N,,Andersen+,B,ANDERSEN,3,1977) D423000100044 The energy degradation as a function of depth in the D423000100045 stack was calculated from the input energy and target D423000100046 thicknesses. D423000100047 MONITOR (22-TI-0(P,X)23-V-48,,SIG) D423000100048 Ti foils, thickness: 10.9 um, Goodfellow. D423000100049 The incident energy and beam current was corrected D423000100050 according to the re-measured excitation function of D423000100051 the monitor reaction. D423000100052 MONIT-REF (,F.Tarkanyi+,R,IAEA-TECDOC-1211,2001) Chapter 4 D423000100053 (D4106002,S.Takacs+,J,NIM/B,188,106,2002) D423000100054 DETECTOR (HPGE) D423000100055 DECAY-DATA Decay data were taken from NuDat2.5 database. D423000100056 ERR-ANALYS (EN-ERR) The uncertainty of incident proton D423000100057 energy, inhomogeneity and thickness uncertainty of the D423000100058 foils and beam straggling were taken into account for D423000100059 energy uncertainty estimation in the target D423000100060 and monitor foils. D423000100061 (DATA-ERR) 11-18% The cross section uncertainties were D423000100062 estimated in the standard way: the independent relativeD423000100063 errors of the linearly contributing processes were D423000100064 summed quadratically and its square root was taken. D423000100065 FLAG (1.) Stack1 D423000100066 (2.) Stack2 D423000100067 ADD-RES (THEO)The excitation functions of the investigated D423000100068 reactions were calculated by means of the pre-compound D423000100069 model codes ALICE-IPPE and EMPIRE-II. Additional D423000100070 excitation curves determined with TALYS nuclear model D423000100071 code system were taken from the TENDL-2008 D423000100072 data library. D423000100073 (TTY-C) Integral yields were calculated from the D423000100074 fitted experimental cross sections. D423000100075 HISTORY (20100901C) KB D423000100076 STATUS (APRVD) B.Kiraly 01.09.2010. D423000100077 ENDBIB 75 0 D423000100078 NOCOMMON 0 0 D423000100079 ENDSUBENT 78 0 D423000199999 SUBENT D4230002 20100901 D074D423000200001 BIB 4 6 D423000200002 REACTION (68-ER-168(P,N)69-TM-168,,SIG) D423000200003 COMMENT The authors neglected the effect of 167Er(p,g) D423000200004 reaction. D423000200005 DECAY-DATA (69-TM-168,93.1D,DG,815.989,0.503) D423000200006 STATUS (TABLE) Data are taken from Table2 of Ref.: D423000200007 Applied Radiation and Isotopes 68 (2010) 250. D423000200008 ENDBIB 6 0 D423000200009 NOCOMMON 0 0 D423000200010 DATA 5 12 D423000200011 EN EN-ERR DATA DATA-ERR FLAG D423000200012 MEV MEV MB MB NO-DIM D423000200013 15.1 0.2 71.5 9.9 2. D423000200014 14.6 0.2 58.1 9.1 1. D423000200015 13.5 0.3 79. 11. 2. D423000200016 13.0 0.3 92. 12. 1. D423000200017 12.2 0.3 144. 18. 2. D423000200018 11.7 0.3 159. 20. 1. D423000200019 10.8 0.4 255. 32. 2. D423000200020 10.3 0.4 249. 30. 1. D423000200021 9.3 0.5 194. 22. 2. D423000200022 8.7 0.5 121. 16. 1. D423000200023 7.6 0.5 55.7 7.7 2. D423000200024 6.2 0.6 15.3 2.1 1. D423000200025 ENDDATA 14 0 D423000200026 ENDSUBENT 25 0 D423000299999 SUBENT D4230003 20100901 D074D423000300001 BIB 4 12 D423000300002 REACTION (68-ER-167(P,N)69-TM-167,,SIG) D423000300003 COMMENT The authors neglected the effect of 166Er(p,g) D423000300004 reaction. D423000300005 167Tm is produced through the 167Er(p,n) and D423000300006 168Er(p,2n) reactions. The EMPIRE-II curve, weighted D423000300007 according to the isotopic composition of the sample, D423000300008 was subtracted from the production cross section of D423000300009 167Tm to get the excitation function of 167Er(p,n)167TmD423000300010 reaction. D423000300011 DECAY-DATA (69-TM-167,9.25D,DG,207.801,0.42) D423000300012 STATUS (TABLE) Data are taken from Table2 of Ref.: D423000300013 Applied Radiation and Isotopes 68 (2010) 250. D423000300014 ENDBIB 12 0 D423000300015 NOCOMMON 0 0 D423000300016 DATA 5 12 D423000300017 EN EN-ERR DATA DATA-ERR FLAG D423000300018 MEV MEV MB MB NO-DIM D423000300019 15.1 0.2 102. 18. 2. D423000300020 14.6 0.2 118. 20. 1. D423000300021 13.5 0.3 161. 26. 2. D423000300022 13.0 0.3 193. 30. 1. D423000300023 12.2 0.3 350. 51. 2. D423000300024 11.7 0.3 397. 57. 1. D423000300025 10.8 0.4 455. 64. 2. D423000300026 10.3 0.4 381. 54. 1. D423000300027 9.3 0.5 226. 32. 2. D423000300028 8.7 0.5 135. 19. 1. D423000300029 7.6 0.5 63.4 8.8 2. D423000300030 6.2 0.6 13.4 1.9 1. D423000300031 ENDDATA 14 0 D423000300032 ENDSUBENT 31 0 D423000399999 SUBENT D4230004 20100901 D074D423000400001 BIB 4 11 D423000400002 REACTION (68-ER-167(P,2N)69-TM-166,,SIG) D423000400003 COMMENT As proton induced nuclear reactions resulting in 166Tm D423000400004 take place only on 166Er and 167Er taking into account D423000400005 the main isotopes of the enriched sample and the energyD423000400006 range covered by the experiments, the excitation D423000400007 function of the 167Er(p,2n)166Tm reaction was D423000400008 determined by subtraction of the weighted EMPIRE-II D423000400009 curve of 166Er(p,n) process. D423000400010 DECAY-DATA (69-TM-166,7.70HR,DG,778.814,0.191) D423000400011 STATUS (TABLE) Data are taken from Table2 of Ref.: D423000400012 Applied Radiation and Isotopes 68 (2010) 250. D423000400013 ENDBIB 11 0 D423000400014 NOCOMMON 0 0 D423000400015 DATA 5 8 D423000400016 EN EN-ERR DATA DATA-ERR FLAG D423000400017 MEV MEV MB MB NO-DIM D423000400018 15.1 0.2 821. 115. 2. D423000400019 14.6 0.2 715. 100. 1. D423000400020 13.5 0.3 511. 72. 2. D423000400021 13.0 0.3 427. 60. 1. D423000400022 12.2 0.3 335. 47. 2. D423000400023 11.7 0.3 210. 30. 1. D423000400024 10.8 0.4 29.6 5.0 2. D423000400025 10.3 0.4 2.4 1.1 1. D423000400026 ENDDATA 10 0 D423000400027 ENDSUBENT 26 0 D423000499999 SUBENT D4230005 20100901 D074D423000500001 BIB 4 9 D423000500002 REACTION (68-ER-166(P,2N)69-TM-165,,SIG) D423000500003 COMMENT 165Tm is produced only via 166Er(p,2n) reaction on the D423000500004 enriched target in the investigated energy range. D423000500005 DECAY-DATA (69-TM-165,30.06HR,DG,242.917,0.355) D423000500006 As gamma energy and intensity values are not available D423000500007 in the NuDat2.5 database, the ToRI database (by D423000500008 Ekstrom and Firestone) was used for this radioisotope. D423000500009 STATUS (TABLE) Data are taken from Table2 of Ref.: D423000500010 Applied Radiation and Isotopes 68 (2010) 250. D423000500011 ENDBIB 9 0 D423000500012 NOCOMMON 0 0 D423000500013 DATA 5 6 D423000500014 EN EN-ERR DATA DATA-ERR FLAG D423000500015 MEV MEV MB MB NO-DIM D423000500016 15.1 0.2 894. 104. 2. D423000500017 14.6 0.2 813. 95. 1. D423000500018 13.5 0.3 453. 55. 2. D423000500019 13.0 0.3 383. 48. 1. D423000500020 12.2 0.3 229. 30. 2. D423000500021 11.7 0.3 96. 16. 1. D423000500022 ENDDATA 8 0 D423000500023 ENDSUBENT 22 0 D423000599999 ENDENTRY 5 0 D423099999999