ENTRY D4203 20080911 D064D420300000001 SUBENT D4203001 20080911 D064D420300100001 BIB 18 70 D420300100002 TITLE Excitation functions of alpha-particle induced nuclear D420300100003 reactions on natural ytterbium D420300100004 AUTHOR (B.Kiraly, F.Tarkanyi, S.Takacs, A.Hermanne, D420300100005 S.F.Kovalev, A.V.Ignatyuk) D420300100006 INSTITUTE (3HUNDEB,2BLGVUB,4RUSFEI) D420300100007 REFERENCE (J,NIM/B,266,3919,2008) D420300100008 (C,2007NICE,2,1371,2007) Preliminary data D420300100009 for 169gYb and 177gLu. D420300100010 FACILITY (CYCLO,2BLGVUB) CGR-560 cyclotron D420300100011 EXP-YEAR (2006) D420300100012 SAMPLE High purity natural foils, thicknesses: Yb 30., D420300100013 Al 25.5, Ti 12. micron. D420300100014 METHOD (STTA,ACTIV,EXTB,GSPEC) D420300100015 Stack1 and stack2 contained ten and eight high purity D420300100016 ytterbium foils, respectively, interloaded with Ti D420300100017 monitor foils. D420300100018 An Al degrader was placed at the front of stack2 to D420300100019 ensure a small energy shift in the successive Yb foils D420300100020 of the two stacks. D420300100021 Incident alpha energy: 39 MeV, D420300100022 beam currents: 137 and 128 nA, D420300100023 irradiation times: 90 min in both cases. D420300100024 No chemical separation. D420300100025 The data acquisition started 0.5 h after the end of D420300100026 bombardment and continued for almost a month measuring D420300100027 each ytterbium foil three times, enabling separation D420300100028 of radioisotopes having the same gamma-lines but D420300100029 different half lives and following cumulative D420300100030 processes. D420300100031 DETECTOR (HPGE) D420300100032 The gamma spectra of the irradiated foils were D420300100033 registered with a PC-coupled HPGe detector system. D420300100034 The distance between the ytterbium sample and the D420300100035 detector crystal was in all cases carefully chosen to D420300100036 avoid dead time corrections, pile-up effects and D420300100037 coincidence losses. D420300100038 MONITOR (22-TI-0(A,X)24-CR-51,,SIG) D420300100039 MONIT-REF (,F.TARKANYI+,R,IAEA-TECDOC-1211,49,2001) Chapter 4 D420300100040 REL-REF (N,,ANDERSEN+,B,ANDERSEN,,1977) Volume 4 D420300100041 The mean energy of the alpha-particle beam in the D420300100042 successive target foils was calculated using the D420300100043 polynomial approximation of Ziegler. D420300100044 DECAY-DATA Decay data were taken from WWW Table of Radioactive D420300100045 Isotopes by Ekstrom and Firestone, database version: D420300100046 2/28/99. D420300100047 ERR-ANALYS (EN-ERR) The energy uncertainty at the first foil in D420300100048 the stack was estimated to be 0.3 MeV increasing up to D420300100049 1.5 MeV at the last foil due to the energy straggling D420300100050 and the uncertainty on the target thickness. D420300100051 (ERR-T) The uncertainty on the cross sections was D420300100052 determined in the standard way: the linearly D420300100053 contributing independent processes were taken into D420300100054 account by extracting the square root of quadratically D420300100055 summed relative uncertainties, namely: D420300100056 (ERR-1) number of the bombarding particles (7%), D420300100057 (ERR-2) number of the target nuclei (3%), D420300100058 (ERR-3) decay data (3%), D420300100059 (ERR-4) detector efficiency (7%) and D420300100060 * peak area (1-10%). D420300100061 ADD-RES (COMP) The measured experimental data were compared to D420300100062 those found in the literature. D420300100063 (THEO) The measured experimental data were compared to D420300100064 and analyzed with theoretical calculations based on D420300100065 the model code ALICE-IPPE. D420300100066 (TTY-C) On the basis of the new experimental cross D420300100067 sections integral yields were calculated. D420300100068 FLAG (1.) Stack1 D420300100069 (2.) Stack2 D420300100070 STATUS (APRVD) S. Takacs, 2008. D420300100071 HISTORY (20080911C) KB D420300100072 ENDBIB 70 0 D420300100073 COMMON 4 3 D420300100074 ERR-1 ERR-2 ERR-3 ERR-4 D420300100075 PER-CENT PER-CENT PER-CENT PER-CENT D420300100076 7.0 3.0 3.0 7.0 D420300100077 ENDCOMMON 3 0 D420300100078 ENDSUBENT 77 0 D420300199999 SUBENT D4203002 20080911 D064D420300200001 BIB 3 3 D420300200002 REACTION (70-YB-0(A,X)72-HF-170,,SIG) D420300200003 DECAY-DATA (72-HF-170,16.01HR,DG,620.7,0.18) D420300200004 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420300200005 ENDBIB 3 0 D420300200006 NOCOMMON 0 0 D420300200007 DATA 5 12 D420300200008 EN EN-ERR DATA ERR-T FLAG D420300200009 MEV MEV MB MB NO-DIM D420300200010 37.7 0.3 1.24 0.38 1. D420300200011 37.2 0.3 1.38 0.52 2. D420300200012 35.3 0.4 1.82 0.52 1. D420300200013 34.8 0.4 1.87 0.43 2. D420300200014 32.8 0.4 1.81 0.44 1. D420300200015 32.3 0.4 2.00 0.62 2. D420300200016 30.1 0.5 1.72 0.34 1. D420300200017 29.6 0.5 1.84 0.39 2. D420300200018 27.3 0.6 1.63 0.28 1. D420300200019 26.7 0.6 1.28 0.27 2. D420300200020 24.3 0.7 1.03 0.24 1. D420300200021 23.7 0.7 0.35 0.16 2. D420300200022 ENDDATA 14 0 D420300200023 ENDSUBENT 22 0 D420300299999 SUBENT D4203003 20080911 D064D420300300001 BIB 4 9 D420300300002 REACTION (70-YB-0(A,X)72-HF-171,,SIG) D420300300003 METHOD No absolute values for the gamma intensities of 171Hf D420300300004 are available in the literature so the relative D420300300005 intensities found in the decay data reference were D420300300006 multiplied by 0.055 according to the latest D420300300007 recommendation of the Nuclear Data Sheets. D420300300008 DECAY-DATA (72-HF-171,12.1HR,DG,469.3,0.055, D420300300009 DG,662.2,0.1463) D420300300010 STATUS (TABLE) Data were taken from Table 3 of the Ref. D420300300011 ENDBIB 9 0 D420300300012 NOCOMMON 0 0 D420300300013 DATA 5 13 D420300300014 EN EN-ERR DATA ERR-T FLAG D420300300015 MEV MEV MB MB NO-DIM D420300300016 37.7 0.3 34.4 3.9 1. D420300300017 37.2 0.3 29.9 3.5 2. D420300300018 35.3 0.4 23.6 2.8 1. D420300300019 34.8 0.4 18.2 2.1 2. D420300300020 32.8 0.4 12.8 1.6 1. D420300300021 32.3 0.4 6.42 0.78 2. D420300300022 30.1 0.5 1.92 0.41 1. D420300300023 29.6 0.5 0.389 0.088 2. D420300300024 26.7 0.6 0.186 0.043 2. D420300300025 24.3 0.7 0.44 0.20 1. D420300300026 23.7 0.7 0.350 0.064 2. D420300300027 21.0 0.9 0.265 0.073 1. D420300300028 20.3 0.9 0.226 0.030 2. D420300300029 ENDDATA 15 0 D420300300030 ENDSUBENT 29 0 D420300399999 SUBENT D4203004 20080911 D064D420300400001 BIB 3 5 D420300400002 REACTION (70-YB-0(A,X)72-HF-173,,SIG) D420300400003 DECAY-DATA (72-HF-173,23.6HR,DG,123.7,0.83, D420300400004 DG,139.6,0.127, D420300400005 DG,297.0,0.339) D420300400006 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420300400007 ENDBIB 5 0 D420300400008 NOCOMMON 0 0 D420300400009 DATA 5 16 D420300400010 EN EN-ERR DATA ERR-T FLAG D420300400011 MEV MEV MB MB NO-DIM D420300400012 37.7 0.3 346. 41. 1. D420300400013 37.2 0.3 329. 39. 2. D420300400014 35.3 0.4 300. 35. 1. D420300400015 34.8 0.4 291. 34. 2. D420300400016 32.8 0.4 267. 31. 1. D420300400017 32.3 0.4 233. 28. 2. D420300400018 30.1 0.5 195. 22. 1. D420300400019 29.6 0.5 165. 19. 2. D420300400020 27.3 0.6 148. 17. 1. D420300400021 26.7 0.6 129. 15. 2. D420300400022 24.3 0.7 107. 13. 1. D420300400023 23.7 0.7 85.0 9.9 2. D420300400024 21.0 0.9 42.0 5.1 1. D420300400025 20.3 0.9 17.5 2.1 2. D420300400026 17.4 1.0 1.11 0.13 1. D420300400027 16.6 1.0 0.20 0.03 2. D420300400028 ENDDATA 18 0 D420300400029 ENDSUBENT 28 0 D420300499999 SUBENT D4203005 20080911 D064D420300500001 BIB 3 3 D420300500002 REACTION (70-YB-0(A,X)72-HF-175,,SIG) D420300500003 DECAY-DATA (72-HF-175,70.D,DG,343.4,0.84) D420300500004 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420300500005 ENDBIB 3 0 D420300500006 NOCOMMON 0 0 D420300500007 DATA 5 15 D420300500008 EN EN-ERR DATA ERR-T FLAG D420300500009 MEV MEV MB MB NO-DIM D420300500010 37.7 0.3 454. 51. 1. D420300500011 37.2 0.3 480. 54. 2. D420300500012 35.3 0.4 479. 54. 1. D420300500013 34.8 0.4 480. 54. 2. D420300500014 32.8 0.4 454. 51. 1. D420300500015 32.3 0.4 410. 46. 2. D420300500016 30.1 0.5 347. 39. 1. D420300500017 29.6 0.5 287. 32. 2. D420300500018 27.3 0.6 211. 24. 1. D420300500019 26.7 0.6 165. 19. 2. D420300500020 24.3 0.7 144. 16. 1. D420300500021 23.7 0.7 122. 14. 2. D420300500022 21.0 0.9 84.1 9.5 1. D420300500023 20.3 0.9 51.2 5.7 2. D420300500024 17.4 1.0 8.84 0.99 1. D420300500025 ENDDATA 17 0 D420300500026 ENDSUBENT 25 0 D420300599999 SUBENT D4203006 20080911 D064D420300600001 BIB 3 7 D420300600002 REACTION (70-YB-0(A,X)72-HF-177-M2,IND,SIG) D420300600003 The excited state 177m2Hf is not fed by b- decay of D420300600004 any of the two isomeric states of 177Lu so independent D420300600005 cross sections are determined. D420300600006 DECAY-DATA (72-HF-177-M2,51.4MIN,DG,277.3,0.78, D420300600007 DG,606.5,0.119) D420300600008 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420300600009 ENDBIB 7 0 D420300600010 NOCOMMON 0 0 D420300600011 DATA 5 8 D420300600012 EN EN-ERR DATA ERR-T FLAG D420300600013 MEV MEV MB MB NO-DIM D420300600014 37.7 0.3 3.57 0.45 1. D420300600015 37.2 0.3 3.56 0.46 2. D420300600016 35.3 0.4 2.57 0.39 1. D420300600017 34.8 0.4 2.08 0.29 2. D420300600018 32.8 0.4 1.25 0.22 1. D420300600019 32.3 0.4 0.83 0.16 2. D420300600020 30.1 0.5 0.37 0.09 1. D420300600021 29.6 0.5 0.18 0.07 2. D420300600022 ENDDATA 10 0 D420300600023 ENDSUBENT 22 0 D420300699999 SUBENT D4203007 20080911 D064D420300700001 BIB 3 10 D420300700002 REACTION (70-YB-0(A,X)71-LU-171-G,CUM,SIG) D420300700003 This cumulative cross section includes the D420300700004 contributions of 171Hf and the metastable state of D420300700005 171Lu after their total decay in addition to the D420300700006 independent formation of the ground state. D420300700007 DECAY-DATA (71-LU-171-G,8.24D,DG,667.4,0.1104, D420300700008 DG,739.8,0.478) D420300700009 (72-HF-171,12.1HR) D420300700010 (71-LU-171-M,79.SEC) D420300700011 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420300700012 ENDBIB 10 0 D420300700013 NOCOMMON 0 0 D420300700014 DATA 5 15 D420300700015 EN EN-ERR DATA ERR-T FLAG D420300700016 MEV MEV MB MB NO-DIM D420300700017 37.7 0.3 53.0 6.0 1. D420300700018 37.2 0.3 44.7 5.1 2. D420300700019 35.3 0.4 34.8 4.1 1. D420300700020 34.8 0.4 29.0 3.4 2. D420300700021 32.8 0.4 18.1 2.2 1. D420300700022 32.3 0.4 9.5 1.3 2. D420300700023 30.1 0.5 2.73 0.55 1. D420300700024 29.6 0.5 0.49 0.23 2. D420300700025 27.3 0.6 0.44 0.09 1. D420300700026 26.7 0.6 0.32 0.08 2. D420300700027 24.3 0.7 0.49 0.09 1. D420300700028 23.7 0.7 0.54 0.11 2. D420300700029 21.0 0.9 0.63 0.13 1. D420300700030 20.3 0.9 0.28 0.06 2. D420300700031 17.4 1.0 0.05 0.02 1. D420300700032 ENDDATA 17 0 D420300700033 ENDSUBENT 32 0 D420300799999 SUBENT D4203008 20080911 D064D420300800001 BIB 3 13 D420300800002 REACTION (70-YB-0(A,X)71-LU-172,IND,SIG) D420300800003 This cross section includes the contribution of 172mLu D420300800004 after its total decay in addition to the independent D420300800005 formation of the ground state but does not include any D420300800006 contribution from 172Hf because the number of decaying D420300800007 nuclei was negligible during the acquisition of the D420300800008 gamma spectra. D420300800009 DECAY-DATA (71-LU-172-G,6.70D,DG,810.1,0.1663, D420300800010 DG,900.7,0.298, D420300800011 DG,1093.7,0.625) D420300800012 (72-HF-172,1.87YR) no contribution D420300800013 (71-LU-172-M,3.7MIN) contribute D420300800014 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420300800015 ENDBIB 13 0 D420300800016 NOCOMMON 0 0 D420300800017 DATA 5 14 D420300800018 EN EN-ERR DATA ERR-T FLAG D420300800019 MEV MEV MB MB NO-DIM D420300800020 37.7 0.3 16.4 2.1 1. D420300800021 37.2 0.3 18.5 2.3 2. D420300800022 35.3 0.4 10.3 1.3 1. D420300800023 34.8 0.4 14.5 1.7 2. D420300800024 32.8 0.4 9.4 1.2 1. D420300800025 32.3 0.4 9.9 1.4 2. D420300800026 30.1 0.5 5.1 1.1 1. D420300800027 29.6 0.5 5.04 0.69 2. D420300800028 27.3 0.6 2.12 0.34 1. D420300800029 26.7 0.6 2.23 0.29 2. D420300800030 24.3 0.7 1.12 0.25 1. D420300800031 23.7 0.7 1.00 0.16 2. D420300800032 21.0 0.9 0.44 0.17 1. D420300800033 20.3 0.9 0.12 0.06 2. D420300800034 ENDDATA 16 0 D420300800035 ENDSUBENT 34 0 D420300899999 SUBENT D4203009 20080911 D064D420300900001 BIB 3 14 D420300900002 REACTION (70-YB-0(A,X)71-LU-177-G,IND,SIG) D420300900003 This cross section may contain contributions of decays D420300900004 of 177Tm, 177mYb, 177gYb in addition to independent D420300900005 formation of the ground state but contribution from D420300900006 177mLu is negligible as presence of its strong D420300900007 gamma-lines in the spectra could not be proved and D420300900008 the ALICE-IPPE prediction says that 177Tm and 177Yb do D420300900009 not play roles in this energy region D420300900010 DECAY-DATA (71-LU-177-G,6.734D,DG,208.4,0.11) D420300900011 (69-TM-177,85.SEC) no contribution D420300900012 (70-YB-177-M,6.41SEC) no contribution D420300900013 (70-YB-177-G,1.911HR) no contribution D420300900014 (71-LU-177-M,160.4D) no contribution D420300900015 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420300900016 ENDBIB 14 0 D420300900017 NOCOMMON 0 0 D420300900018 DATA 5 14 D420300900019 EN EN-ERR DATA ERR-T FLAG D420300900020 MEV MEV MB MB NO-DIM D420300900021 37.7 0.3 6.74 0.94 1. D420300900022 37.2 0.3 6.18 0.89 2. D420300900023 35.3 0.4 4.07 0.65 1. D420300900024 34.8 0.4 4.78 0.76 2. D420300900025 32.8 0.4 3.40 0.56 1. D420300900026 32.3 0.4 3.71 0.77 2. D420300900027 30.1 0.5 3.11 0.56 1. D420300900028 29.6 0.5 2.81 0.47 2. D420300900029 27.3 0.6 2.38 0.38 1. D420300900030 26.7 0.6 1.75 0.22 2. D420300900031 24.3 0.7 1.04 0.27 1. D420300900032 23.7 0.7 0.47 0.10 2. D420300900033 20.3 0.9 0.05 0.09 2. D420300900034 7.8 1.5 0.06 0.03 1. D420300900035 ENDDATA 16 0 D420300900036 ENDSUBENT 35 0 D420300999999 SUBENT D4203010 20080911 D064D420301000001 BIB 3 6 D420301000002 REACTION (70-YB-0(A,X)71-LU-178-M,IND,SIG) D420301000003 As 178Yb does not decay into the metastable state of D420301000004 178Lu, an independent cross section for 178mLu D420301000005 formation could be measured. D420301000006 DECAY-DATA (71-LU-178-M,23.1MIN,DG,426.4,0.97) D420301000007 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420301000008 ENDBIB 6 0 D420301000009 NOCOMMON 0 0 D420301000010 DATA 5 8 D420301000011 EN EN-ERR DATA ERR-T FLAG D420301000012 MEV MEV MB MB NO-DIM D420301000013 37.7 0.3 1.02 0.12 1. D420301000014 37.2 0.3 0.97 0.11 2. D420301000015 35.3 0.4 0.81 0.13 1. D420301000016 34.8 0.4 0.82 0.10 2. D420301000017 32.8 0.4 0.67 0.10 1. D420301000018 32.3 0.4 0.43 0.06 2. D420301000019 30.1 0.5 0.34 0.05 1. D420301000020 29.6 0.5 0.24 0.04 2. D420301000021 ENDDATA 10 0 D420301000022 ENDSUBENT 21 0 D420301099999 SUBENT D4203011 20080911 D064D420301100001 BIB 3 14 D420301100002 REACTION (70-YB-0(A,X)70-YB-169,IND,SIG) D420301100003 This cross section may contain contributions of D420301100004 169Hf, 169mLu, 169gLu and 169mYb after their total D420301100005 decay in addition to the independent formation of the D420301100006 ground state 169gYb. The model code predicts that D420301100007 among them 169Lu has no effect on the cross section of D420301100008 the measured reaction below 39 MeV. D420301100009 DECAY-DATA (70-YB-169-G,32.026D,DG,177.2,0.2216, D420301100010 DG,307.7,0.1005) D420301100011 (72-HF-169,3.24MIN) no contribution D420301100012 (71-LU-169-M,160.SEC) no contribution D420301100013 (71-LU-169-G,34.06HR) no contribution D420301100014 (70-YB-169-M,46.SEC) contribute D420301100015 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420301100016 ENDBIB 14 0 D420301100017 NOCOMMON 0 0 D420301100018 DATA 5 6 D420301100019 EN EN-ERR DATA ERR-T FLAG D420301100020 MEV MEV MB MB NO-DIM D420301100021 37.7 0.3 2.49 0.73 1. D420301100022 37.2 0.3 2.46 0.67 2. D420301100023 35.3 0.4 1.58 0.71 1. D420301100024 34.8 0.4 0.89 0.42 2. D420301100025 32.8 0.4 1.18 0.85 1. D420301100026 23.7 0.7 0.46 0.17 2. D420301100027 ENDDATA 8 0 D420301100028 ENDSUBENT 27 0 D420301199999 SUBENT D4203012 20080911 D064D420301200001 BIB 3 10 D420301200002 REACTION (70-YB-0(A,X)70-YB-177,IND,SIG) D420301200003 This cross section may contain the contributions of D420301200004 177Tm and 177mYb after their total decay in addition D420301200005 to independent formation of the ground state 177gYb D420301200006 but according to the model code results the role of D420301200007 177Tm is negligible in this energy region. D420301200008 DECAY-DATA (70-YB-177-G,1.911HR,DG,150.4,0.203) D420301200009 (69-TM-177,85.SEC) no contribution D420301200010 (70-YB-177-M,6.41SEC) contribute D420301200011 STATUS (TABLE) Data were taken from Table 2 of the Ref. D420301200012 ENDBIB 10 0 D420301200013 NOCOMMON 0 0 D420301200014 DATA 5 4 D420301200015 EN EN-ERR DATA ERR-T FLAG D420301200016 MEV MEV MB MB NO-DIM D420301200017 37.7 0.3 0.23 0.11 1. D420301200018 35.3 0.4 0.29 0.15 1. D420301200019 34.8 0.4 0.22 0.18 2. D420301200020 32.3 0.4 0.19 0.12 2. D420301200021 ENDDATA 6 0 D420301200022 ENDSUBENT 21 0 D420301299999 ENDENTRY 12 0 D420399999999