ENTRY A0631 20170210 A087A063100000001 SUBENT A0631001 20170210 A087A063100100001 BIB 13 39 A063100100002 TITLE Nonequilibrium Effects in alpha-particle-induced A063100100003 reactions on gallium isotopes A063100100004 AUTHOR (I.A.Rizvi,M.K.Bhardwaj,M.Afzal Ansari,A.K.Chaubey) A063100100005 REFERENCE (J,CJP,67,870,1989) A063100100006 INSTITUTE (3INDMUA) A063100100007 FACILITY (CYCLO,3INDVEC) Variable Energy Cyclotron Center, A063100100008 Calcutta. A063100100009 METHOD (STTA) A063100100010 (GSPEC) A063100100011 (ACTIV) Beam currents of the order of 100 nano-amperes A063100100012 were used. the irradiation period was about 45 minutes.A063100100013 (EXTB) 60-MeV diffused beam. A063100100014 (BCINT) A063100100015 ANALYSIS (AREA) A063100100016 (DECAY) A063100100017 DETECTOR (GELI) High-resolution 100 CC Ortec Ge(Li) detector A063100100018 (FWHM 2 keV at 1.33 MeV) coupled with a precalibrated A063100100019 4096-channel Canberra-88 analyser. A063100100020 SAMPLE Natural gallium oxide deposits of thickness 0.9 mg/cm2 A063100100021 were made on thin aluminium backing of thickness A063100100022 6.75 mg/cm2. Energy degrading aluminium foils of A063100100023 thickness 20.387 and 6.75 mg/cm2 whenever required, to A063100100024 get the desired alpha-particle energy incident on A063100100025 each foil. A063100100026 ERR-ANALYS (EN-ERR) Total energy spread associated with each A063100100027 incident alpha-particle energy (horizontal bars A063100100028 on figs) A063100100029 (ERR-S) Statistical error. The statistical error A063100100030 given in the results is the larger one of the internal A063100100031 and external errors (see REL-REF). In general these areA063100100032 less than 12%, except for a few points. A063100100033 Straggling effects are expected to be negligibly small.A063100100034 REL-REF (M,,S.F.Mughabghab+,B,NEUT.CS 1A,89,1981) A063100100035 ADD-RES (COMP) Preequilibrium model. Code ALICE/LIVERMORE-82. A063100100036 HISTORY (19990604C) By F.C. A063100100037 (19990615U) Last checking has been done. A063100100038 (19990621A) DATE is corrected A063100100039 (20170210A) SD: Institute and Facility codes corrected.A063100100040 Data were re-digitized in all Subents. BIB update. A063100100041 ENDBIB 39 0 A063100100042 COMMON 2 3 A063100100043 EN-ERR-DIG ERR-DIG A063100100044 MEV PER-CENT A063100100045 0.1 1.7 A063100100046 ENDCOMMON 3 0 A063100100047 ENDSUBENT 46 0 A063100199999 SUBENT A0631002 20170210 A087A063100200001 BIB 4 5 A063100200002 REACTION (31-GA-69(A,N)33-AS-72,,SIG) A063100200003 COMMENT - By Author - Only one reaction is possible at the A063100200004 energies on natural gallium. A063100200005 STATUS (CURVE) Fig.2 from CJP,67,870,1989 A063100200006 HISTORY (20170210A) SD: Data were re-digitized. A063100200007 ENDBIB 5 0 A063100200008 NOCOMMON 0 0 A063100200009 DATA 4 4 A063100200010 EN EN-ERR DATA ERR-S A063100200011 MEV MEV MB MB A063100200012 9.7 1.9 21.6 1.4 A063100200013 14.3 1.5 421.8 33.1 A063100200014 18.1 1.3 689.3 48.7 A063100200015 21.4 1.2 555.2 39.2 A063100200016 ENDDATA 6 0 A063100200017 ENDSUBENT 16 0 A063100299999 SUBENT A0631003 20170210 A087A063100300001 BIB 5 6 A063100300002 REACTION (31-GA-0(A,X)33-AS-71,,SIG) A063100300003 DECAY-DATA (33-AS-71,61.HR,DG,175.,,DG,1096.) A063100300004 COMMENT - By Author - The threshold energy For Ga-71(alpha,4n) A063100300005 reaction is 33.920 MeV. A063100300006 STATUS (CURVE) Fig.3 from CJP,67,870,1989 A063100300007 HISTORY (20170210A) SD: Data were re-digitized. A063100300008 ENDBIB 6 0 A063100300009 NOCOMMON 0 0 A063100300010 DATA 4 11 A063100300011 EN EN-ERR DATA ERR-S A063100300012 MEV MEV MB MB A063100300013 17.9 1.2 13.2 0.9 A063100300014 21.1 1.0 264.0 18.5 A063100300015 24.1 0.9 682.7 47.9 A063100300016 26.8 1.0 937.1 65.8 A063100300017 29.4 0.9 764.6 53.7 A063100300018 34.9 1.0 633.1 44.5 A063100300019 39.7 0.9 264.3 18.6 A063100300020 44.2 0.9 206.6 14.5 A063100300021 48.4 0.8 185.1 11.5 A063100300022 52.3 0.8 201.9 12.6 A063100300023 56.0 0.8 215.5 15.2 A063100300024 ENDDATA 13 0 A063100300025 ENDSUBENT 24 0 A063100399999 SUBENT A0631004 20170210 A087A063100400001 BIB 4 13 A063100400002 REACTION (31-GA-69(A,2N)33-AS-71,,SIG) A063100400003 COMMENT - By Author - Below the threshold the Ga-71(alpha,4n) A063100400004 reaction [i.e., 33.920 MeV], the measured excitation A063100400005 function is due to the Ga-69(alpha,2n) reaction only. A063100400006 Therefore, the measured excitation function for A063100400007 Ga-69(alpha,2n) reaction, below the threshold for A063100400008 Ga-71(alpha,4n) reaction, was reproduced first from theA063100400009 theoretical calculations. The calculated excitation A063100400010 function was then extended in the region of overlap A063100400011 [>33.920 MeV] using the same set of parameters. A063100400012 STATUS (CURVE) Fig.4 from CJP,67,870,1989 A063100400013 (DEP,A0631003) A063100400014 HISTORY (20170210A) SD:Data were re-digitized. SF9=CALC deletedA063100400015 ENDBIB 13 0 A063100400016 NOCOMMON 0 0 A063100400017 DATA 4 11 A063100400018 EN EN-ERR DATA ERR-S A063100400019 MEV MEV MB MB A063100400020 17.9 1.1 13.3 1.0 A063100400021 21.2 1.1 270.2 18.8 A063100400022 24.1 1.1 661.1 46.0 A063100400023 26.8 1.1 864.0 60.0 A063100400024 29.5 0.9 743.4 57.6 A063100400025 39.6 1.1 111.3 7.7 A063100400026 44.2 1.0 67.5 5.2 A063100400027 48.3 1.1 57.8 4.0 A063100400028 52.1 1.1 48.1 3.0 A063100400029 56.0 0.9 38.5 2.7 A063100400030 59.6 0.9 28.7 2.0 A063100400031 ENDDATA 13 0 A063100400032 ENDSUBENT 31 0 A063100499999 SUBENT A0631005 20170210 A087A063100500001 BIB 5 15 A063100500002 REACTION (31-GA-69(A,3N)33-AS-70,,SIG) A063100500003 COMMENT - By Author - For natural gallium one more reaction A063100500004 channel Ga-71(alpha,5n)As-70 opens at the offset of A063100500005 available alpha-particle energy [ i.e., at 46.2 MeV], A063100500006 whereas the same product nucleus is produced. By A063100500007 theoretical calculation we find that the cross sectionA063100500008 for the reaction Ga-71(alpha,5n) is of the order of a A063100500009 few millibarns up to 60 MeV, and hence the contributionA063100500010 from Ga-69(alpha,3n) is predominant. A063100500011 ERR-ANALYS (DATA-ERR) Total estimated errors in cross section A063100500012 represented by vertical bars. If no bar is depicted, A063100500013 the size of the circle includes the magnitude of the A063100500014 statistical errors. A063100500015 STATUS (CURVE) Fig.5 from CJP,67,870,1989 A063100500016 HISTORY (20170210A) SD: Data were re-digitized. A063100500017 ENDBIB 15 0 A063100500018 NOCOMMON 0 0 A063100500019 DATA 5 7 A063100500020 EN EN-ERR DATA ERR-S DATA-ERR A063100500021 MEV MEV MB MB MB A063100500022 34.6 0.8 62.1 19.4 A063100500023 39.6 0.8 154.3 18.1 A063100500024 44.2 0.8 215.6 15.1 A063100500025 48.3 0.8 161.7 10.4 A063100500026 52.3 0.7 101.7 6.6 A063100500027 55.9 0.7 75.6 5.3 A063100500028 59.6 0.8 41.1 2.6 A063100500029 ENDDATA 9 0 A063100500030 ENDSUBENT 29 0 A063100599999 SUBENT A0631006 20170210 A087A063100600001 BIB 5 11 A063100600002 REACTION (31-GA-69(A,X)32-GE-69,(CUM),SIG) A063100600003 COMMENT - By Compiler - Any information for possible influence A063100600004 of Ga-69(alpha,4n)as-69 production is absent. As-69 is A063100600005 Ge-69 precursor (t1/2=15 min). A063100600006 ERR-ANALYS (DATA-ERR) Total estimated errors in cross section A063100600007 represented by vertical bars. If no bar is depicted, A063100600008 the size of the circle includes the magnitude of the A063100600009 statistical errors. A063100600010 STATUS (CURVE) Fig.6 from CJP,67,870,1989 A063100600011 HISTORY (20170210A) SD: Data were re-digitized. SF3=3n+p -> X A063100600012 in REACTION code. A063100600013 ENDBIB 11 0 A063100600014 NOCOMMON 0 0 A063100600015 DATA 5 5 A063100600016 EN EN-ERR DATA ERR-S DATA-ERR A063100600017 MEV MEV MB MB MB A063100600018 44.2 0.7 42.8 6.4 A063100600019 48.6 0.8 125.8 8.3 A063100600020 52.6 0.7 211.7 14.0 A063100600021 56.2 0.7 352.8 27.1 A063100600022 59.9 0.7 320.4 22.9 A063100600023 ENDDATA 7 0 A063100600024 ENDSUBENT 23 0 A063100699999 SUBENT A0631007 20170210 A087A063100700001 BIB 4 7 A063100700002 REACTION (31-GA-71(A,N)33-AS-74,,SIG) A063100700003 ERR-ANALYS (DATA-ERR) Total estimated errors in cross section A063100700004 represented by vertical bars. If no bar is depicted, A063100700005 the size of the circle includes the magnitude of the A063100700006 statistical errors. A063100700007 STATUS (CURVE) Fig.7 from CJP,67,870,1989 A063100700008 HISTORY (20170210A) SD: Data were re-digitized. A063100700009 ENDBIB 7 0 A063100700010 NOCOMMON 0 0 A063100700011 DATA 5 7 A063100700012 EN EN-ERR DATA ERR-S DATA-ERR A063100700013 MEV MEV MB MB MB A063100700014 9.7 1.9 44.4 10.2 A063100700015 14.1 1.5 580.1 37.3 A063100700016 17.9 1.3 584.7 37.6 A063100700017 21.1 1.2 247.8 46.7 A063100700018 24.0 1.3 126.1 29.6 A063100700019 26.6 1.0 62.4 18.0 A063100700020 29.2 0.9 46.4 14.8 A063100700021 ENDDATA 9 0 A063100700022 ENDSUBENT 21 0 A063100799999 SUBENT A0631008 20170210 A087A063100800001 BIB 3 3 A063100800002 REACTION (31-GA-71(A,4N)33-AS-71,,SIG) A063100800003 STATUS (CURVE) Fig.8 from CJP,67,870,1989 A063100800004 HISTORY (20170210A) SD: Data were re-digitized. A063100800005 ENDBIB 3 0 A063100800006 NOCOMMON 0 0 A063100800007 DATA 4 4 A063100800008 EN EN-ERR DATA ERR-S A063100800009 MEV MEV MB MB A063100800010 48.3 1.0 197.7 12.8 A063100800011 52.4 0.9 250.2 16.2 A063100800012 56.0 1.0 276.6 17.9 A063100800013 59.7 0.9 231.2 14.9 A063100800014 ENDDATA 6 0 A063100800015 ENDSUBENT 14 0 A063100899999 ENDENTRY 8 0 A063199999999