ENTRY A0582 20200214 A093A058200000001 SUBENT A0582001 20200214 A093A058200100001 BIB 15 58 A058200100002 TITLE Excitation function measurement and reaction mechanism A058200100003 analysis for alpha-induced reactions on 197-Au A058200100004 AUTHOR (N.Chakravarty, P.K.Sarkar, Maitreyee Nandy, A058200100005 Sudip Ghosh) A058200100006 REFERENCE (J,JP/G,24,151,1998) A058200100007 REL-REF (R,,U.Reus+,J,AND,29,1,1983) Decay data A058200100008 (M,D6290001,N.Chakravarty+,J,PR/C,45,1171,1992) A058200100009 Method of analysis. A058200100010 INSTITUTE (1USASJS,3INDVEC,3INDSAH) A058200100011 FACILITY (ISOCY,3INDVEC) A058200100012 MONITOR (13-AL-27(A,3P)12-MG-28,,SIG) A058200100013 (13-AL-27(A,X)11-NA-24,CUM,SIG) A058200100014 (13-AL-27(A,X)11-NA-22,CUM,SIG) A058200100015 MONIT-REF (B0142001,U.Martens+,R,KFK-1083,1969) A058200100016 SAMPLE To minimize the uncertainties in the projectile A058200100017 energies at each target foil, thinly stacked foils withA058200100018 only three targets were used in each stack. Aluminium A058200100019 foils of 6.85 mg/cm**2 were used as energy degraders A058200100020 and internal flux monitor. For measuring the cross A058200100021 sections of relatively short-lived nuclides, 1.0 A058200100022 mg/cm**2 thickness 197-Au deposited on Al spacer foils A058200100023 served as targets. To obtain measurable yields of A058200100024 long-lived residuals, self-supporting 46.6 mg/cm**2 A058200100025 thick 197-Au targets were used in the stack. Both the A058200100026 target and the degrader foils were 0F 99.99% purity. A058200100027 METHOD (STTA) See SAMPLE A058200100028 (ACTIV) The irradiation times were optimized according A058200100029 to half-lives of residual and the irradiations were A058200100030 performed in duplicate. A058200100031 (BCINT) The flux values were in good agreement with A058200100032 flux values obtained from monitor reactions. Their A058200100033 average was used to determine the cross sections. A058200100034 (GSPEC) The decay of characteristic gamma peaks was A058200100035 followed for more than five half-lives except for A058200100036 195-Au for which only two half-lives were followed. A058200100037 DETECTOR (HPGE) A058200100038 ERR-ANALYS (ERR-S) The error assigned is the root mean square of A058200100039 the statistical errors associated with the individual A058200100040 cross sections. A058200100041 (ERR-1) uncertainty in the energy. A058200100042 (ERR-2) uncertainty in the flux measurement A058200100043 (ERR-3) uncertainty in the detector efficiency A058200100044 ANALYSIS (DECAY) A058200100045 ADD-RES (COMP) The excitation functions were analysed in terms A058200100046 of direct, pre-equilibrium and evaporation emissions. A058200100047 The two most commonly used models of pre-equilibrium A058200100048 reactions, the exciton and the hybrid models, have bothA058200100049 been used and compared. The choice of the initial A058200100050 exciton number, the role of the pre-equilibrium clusterA058200100051 and multiple nucleon emissions have been investigated. A058200100052 The direct emission of cluster are found to A058200100053 significantly affect the excitation functions of 197-HgA058200100054 and Au isotopes. A058200100055 HISTORY (20030805C) By CAJAD A058200100056 (20040213U) Last checking has been done. A058200100057 (20200214A) SD: Subents 004,009,010,011 deleted (data A058200100058 are from another publ. see D6190). STATUS moved to A058200100059 Subents 002-011. A058200100060 ENDBIB 58 0 A058200100061 COMMON 3 3 A058200100062 ERR-1 ERR-2 ERR-3 A058200100063 PER-CENT PER-CENT PER-CENT A058200100064 1. 3. 3. A058200100065 ENDCOMMON 3 0 A058200100066 ENDSUBENT 65 0 A058200199999 SUBENT A0582002 20200214 A093A058200200001 BIB 5 7 A058200200002 REACTION (79-AU-197(A,N)81-TL-200,,SIG) A058200200003 RAD-DET (81-TL-200,DG) A058200200004 DECAY-DATA (81-TL-200,26.1HR,DG,367.9,0.872, A058200200005 DG,579.2,0.138, A058200200006 DG,828.3,0.108) A058200200007 STATUS (CURVE) Fig.1 from Jour.Phys.,G24(1998)151 A058200200008 HISTORY (20200214U) SD: STATUS added. A058200200009 ENDBIB 7 0 A058200200010 COMMON 1 3 A058200200011 EN-ERR-DIG A058200200012 MEV A058200200013 0.17 A058200200014 ENDCOMMON 3 0 A058200200015 DATA 3 7 A058200200016 EN DATA ERR-S A058200200017 MEV MB PER-CENT A058200200018 34.53 6.8 13. A058200200019 34.99 10.0 24. A058200200020 41.63 4.8 17. A058200200021 42.20 6.4 14. A058200200022 43.49 7.9 23. A058200200023 47.44 2.4 25. A058200200024 48.23 4.5 24. A058200200025 ENDDATA 9 0 A058200200026 ENDSUBENT 25 0 A058200299999 SUBENT A0582003 20200214 A093A058200300001 BIB 5 6 A058200300002 REACTION (79-AU-197(A,2N)81-TL-199,,SIG) A058200300003 RAD-DET (81-TL-199,DG) A058200300004 DECAY-DATA (81-TL-199,7.42HR,DG,158.4,0.049, A058200300005 DG,208.1,0.122) A058200300006 STATUS (CURVE) Fig.2 from Jour.Phys.,G24(1998)151 A058200300007 HISTORY (20200214U) SD: STATUS added. A058200300008 ENDBIB 6 0 A058200300009 COMMON 1 3 A058200300010 EN-ERR-DIG A058200300011 MEV A058200300012 0.17 A058200300013 ENDCOMMON 3 0 A058200300014 DATA 3 6 A058200300015 EN DATA ERR-S A058200300016 MEV MB PER-CENT A058200300017 34.88 138. 14. A058200300018 38.43 73. 7. A058200300019 42.20 47. 15. A058200300020 43.50 41. 24. A058200300021 44.68 38. 6. A058200300022 48.21 33. 24. A058200300023 ENDDATA 8 0 A058200300024 ENDSUBENT 23 0 A058200399999 NOSUBENT A0582004 20200214 A093A058200400001 SUBENT A0582005 20200214 A093A058200500001 BIB 5 7 A058200500002 REACTION (79-AU-197(A,4N)81-TL-197-G,M+,SIG) A058200500003 RAD-DET (81-TL-197-G,DG) A058200500004 DECAY-DATA (81-TL-197-G,2.84HR,DG,152.15,0.0756, A058200500005 DG,308.5,0.022, A058200500006 DG,432.9,0.0215) A058200500007 STATUS (CURVE) Fig.3 from Jour.Phys.,G24(1998)151 A058200500008 HISTORY (20200214U) SD: STATUS added. A058200500009 ENDBIB 7 0 A058200500010 COMMON 1 3 A058200500011 EN-ERR-DIG A058200500012 MEV A058200500013 0.17 A058200500014 ENDCOMMON 3 0 A058200500015 DATA 3 5 A058200500016 EN DATA ERR-S A058200500017 MEV MB PER-CENT A058200500018 38.85 80. 6. A058200500019 42.56 600. 23. A058200500020 43.84 900. 22. A058200500021 45.01 1120. 21. A058200500022 48.42 1500. 20. A058200500023 ENDDATA 7 0 A058200500024 ENDSUBENT 23 0 A058200599999 SUBENT A0582006 20200214 A093A058200600001 BIB 5 10 A058200600002 REACTION (79-AU-197(A,5N)81-TL-196,,SIG) A058200600003 DECAY-DATA (81-TL-196-G,1.84HR,DG,610.5,0.119, A058200600004 DG,635.2,0.0979) A058200600005 COMMENT -By authors. For Tl-196 the metastable and ground-stateA058200600006 half-lives are comparable and isomer transition is A058200600007 4.5%. The gammas detected, however, are common to the A058200600008 decay of both Tl-196-m and Tl-196-g, thereby giving us A058200600009 sigma(m)+sigma(g). A058200600010 STATUS (CURVE) Fig.4 from Jour.Phys.,G24(1998)151 A058200600011 HISTORY (20200214U) SD: STATUS added. A058200600012 ENDBIB 10 0 A058200600013 COMMON 1 3 A058200600014 EN-ERR-DIG A058200600015 MEV A058200600016 0.13 A058200600017 ENDCOMMON 3 0 A058200600018 DATA 3 3 A058200600019 EN DATA ERR-S A058200600020 MEV MB PER-CENT A058200600021 47.14 44. 50. A058200600022 47.83 70. 40. A058200600023 48.12 75. 40. A058200600024 ENDDATA 5 0 A058200600025 ENDSUBENT 24 0 A058200699999 SUBENT A0582007 20200214 A093A058200700001 BIB 6 10 A058200700002 REACTION (79-AU-197(A,X)79-AU-194-G,M+,SIG) A058200700003 RAD-DET (79-AU-194-G,DG) A058200700004 DECAY-DATA (79-AU-194-G,39.5HR,DG,293.5,0.110, A058200700005 DG,328.0,0.630) A058200700006 COMMENT - By compiler. According to ENSDF, Au-194 has two A058200700007 isomeric state (half-lives = 0.6 and 0.42 sec) and A058200700008 half-life of Au-194-g is 38.02 +/- 0.1 hours. A058200700009 STATUS (CURVE) Fig.6 from Jour.Phys.,G24(1998)151 A058200700010 HISTORY (20200214A) SD: SF5=IND/M+ -> M+ in REACTION code. A058200700011 STATUS added. A058200700012 ENDBIB 10 0 A058200700013 COMMON 1 3 A058200700014 EN-ERR-DIG A058200700015 MEV A058200700016 0.17 A058200700017 ENDCOMMON 3 0 A058200700018 DATA 3 5 A058200700019 EN DATA ERR-S A058200700020 MEV MB PER-CENT A058200700021 34.76 7.3E-02 18. A058200700022 41.92 0.24 50. A058200700023 43.78 0.71 40. A058200700024 47.52 2.8 40. A058200700025 48.45 6.1 25. A058200700026 ENDDATA 7 0 A058200700027 ENDSUBENT 26 0 A058200799999 SUBENT A0582008 20200214 A093A058200800001 BIB 5 6 A058200800002 REACTION (79-AU-197(A,X)79-AU-195-G,M+,SIG) A058200800003 RAD-DET (79-AU-195-G,DG) A058200800004 DECAY-DATA (79-AU-195-G,186.1D,DG,98.86,0.109) A058200800005 STATUS (CURVE) Fig.5 from Jour.Phys.,G24(1998)151 A058200800006 HISTORY (20200214A) SD: SF5=IND/M+ -> M+ in REACTION code. A058200800007 STATUS added. A058200800008 ENDBIB 6 0 A058200800009 COMMON 1 3 A058200800010 EN-ERR-DIG A058200800011 MEV A058200800012 0.16 A058200800013 ENDCOMMON 3 0 A058200800014 DATA 3 6 A058200800015 EN DATA ERR-S A058200800016 MEV MB PER-CENT A058200800017 35.03 2.6 23. A058200800018 35.61 2.5 40. A058200800019 41.96 10.1 7. A058200800020 43.93 13.1 13. A058200800021 47.63 20.2 6. A058200800022 48.44 22.0 14. A058200800023 ENDDATA 8 0 A058200800024 ENDSUBENT 23 0 A058200899999 NOSUBENT A0582009 20200214 A093A058200900001 NOSUBENT A0582010 20200214 A093A058201000001 NOSUBENT A0582011 20200214 A093A058201100001 ENDENTRY 11 0 A058299999999