ENTRY M0629 20060125 M039M062900000001 SUBENT M0629001 20060125 M039M062900100001 BIB 14 57 M062900100002 TITLE Excitation of the isomeric states 1h-11/2 in the M062900100003 nuclear reactions with g-rays, neutrons, and at M062900100004 b-decay. M062900100005 AUTHOR (A.G.BELOV,YU.P.GANGRSKY,L.M.MELNIKOVA,V.YU.PONOMAREV, M062900100006 N.TSONEVA,CH.STOYANOV,A.P.TONCHEV,N.BALABANOV) M062900100007 INSTITUTE (4ZZZDUB) Joint Institute of Nuclear Research (JINR), M062900100008 Dubna M062900100009 REFERENCE (J,YF,64,1987,2001) M062900100010 (J,PAN,64,1901,2001) M062900100011 INC-SOURCE (BRST) M062900100012 FACILITY (MICRT,4ZZZDUB) MT-25 microtron of JINR. M062900100013 SAMPLE The samples of BaO, Ce-2(O-3), Nd-2(O-3), Sm-2(O-3) M062900100014 oxydes were used (natural and enriched 136Ba (95 %) M062900100015 138Ce (60 %), 144Sm (90 %) elements) all with weight M062900100016 of 200 mg. Gases were enriched by isotopes 134Xe (90 M062900100017 %) and 136Xe (95 %) and used inside ampoules with M062900100018 volume ~ 1 cm**3 at pressure of 1 atm. M062900100019 DETECTOR (GELI) 60 cm**3 volume Ge(Li)-detector with 2.8 keV M062900100020 resolution for Eg = 1.332 keV (60Co). M062900100021 ANALYSIS (AREA) Isomer yield and ratio measurement using the M062900100022 g-quanta energy spectrum lines data separated using M062900100023 the code ACTIV. The integral cross sections were M062900100024 obtained using the measured isomeric ratios and M062900100025 published total photoneutron reaction cross section M062900100026 data. M062900100027 REL-REF (R,,S.S.DIETRICH+,J,AND,38,199,1988) Photoabsorption M062900100028 reaction cross section energy dependencies obtained M062900100029 using quasimonoenergetic photons. M062900100030 (R,,A.M.GORYACHEV+,J,IZV,54,2240,1990) Neutron kinetic M062900100031 energy spectra. M062900100032 (R,,PH.G.KONDEV+,J,NIM/B,71,126,1992) Bremsstrahlung M062900100033 spectrum. M062900100034 ERR-ANALYS (DATA-ERR) Statistical errors are given. M062900100035 STATUS (TABLE) Data from the Tables 1,2 have been compiled at M062900100036 the Russia MSU INP CDFE by V.Varlamov. M062900100037 COMMENT The isomeric ratios (IR) were measured in the isotones M062900100038 with N = 81 (135Xe, 137Ba, 139Ce, 141Nd, and 143Sm). M062900100039 Isomers with J-PI = 11/2- were excited in the M062900100040 reactions (n,g), (g,n), and b+ - decay of 139Pr and M062900100041 141Pm. The activation methods of g-spectrum M062900100042 measurement was used. The marked difference of Ir was M062900100043 observed in the isotones with the different atomic M062900100044 numbers Z but in the same reactions. The calculations M062900100045 of Ir using low-level spectrum and radiation M062900100046 transitions on the base of the quasiparticle phonon M062900100047 model were performed. The satisfactory agreement of M062900100048 the measured and calculated Ir was obtained for all M062900100049 studied isotopes. The dependence of Ir on Z is M062900100050 explained by the different energy of reaction and M062900100051 different probability levels population of the M062900100052 activation. M062900100053 HISTORY (20020408C) M062900100054 (20051110A) Author's families corrected, lower case, M062900100055 REACTION codes substituted, DECAY-DATA and MISC-COL M062900100056 introduced, DATA substututed, misprints corrected, M062900100057 METHOD shifted from SUBENT 1 into others. M062900100058 (20060125A) DECAY DATA changed in SUBENTS 4, 5. M062900100059 ENDBIB 57 0 M062900100060 COMMON 1 3 M062900100061 EN-MAX M062900100062 MEV M062900100063 25. M062900100064 ENDCOMMON 3 0 M062900100065 ENDSUBENT 64 0 M062900199999 SUBENT M0629002 20060125 M039M062900200001 BIB 4 6 M062900200002 REACTION (54-XE-136(G,N)54-XE-135-M/G,,SIG/RAT,,BRA) M062900200003 DECAY-DATA (54-XE-135-G,9.1HR,DG,249.8,0.93) M062900200004 (54-XE-135-M,15.3MIN,DG,526.6,0.81) M062900200005 METHOD (ACTIV) Induced g-activity was measured. M062900200006 MISC-COL (MISC) Calculated value from quasiparticle phonon M062900200007 model model. M062900200008 ENDBIB 6 0 M062900200009 NOCOMMON 0 0 M062900200010 DATA 3 1 M062900200011 DATA DATA-ERR MISC M062900200012 NO-DIM NO-DIM NO-DIM M062900200013 .110 .009 .11 M062900200014 ENDDATA 3 0 M062900200015 ENDSUBENT 14 0 M062900299999 SUBENT M0629003 20060125 M039M062900300001 BIB 4 11 M062900300002 REACTION (56-BA-138(G,N)56-BA-137-M/G,,SIG/RAT,,BRA) M062900300003 DECAY-DATA (56-BA-137-M,2.55MIN,DG,661.6,0.9) M062900300004 METHOD Induced g-activity was measured for 137Ba isomer M062900300005 state investigation. M062900300006 Comparison of experimental yields of 137Ba and 139Ce M062900300007 in reactions 138Ba(g,n) and 140Ce(g,n) using the M062900300008 known (g,n) reaction cross sections integrated over M062900300009 bremsstrahlung was used for 137Ba stable ground M062900300010 state investigation. M062900300011 MISC-COL (MISC) Calculated value from quasiparticle phonon M062900300012 model model. M062900300013 ENDBIB 11 0 M062900300014 NOCOMMON 0 0 M062900300015 DATA 3 1 M062900300016 DATA DATA-ERR MISC M062900300017 NO-DIM NO-DIM NO-DIM M062900300018 .120 .008 .10 M062900300019 ENDDATA 3 0 M062900300020 ENDSUBENT 19 0 M062900399999 SUBENT M0629004 20060125 M039M062900400001 BIB 4 6 M062900400002 REACTION (58-CE-140(G,N)58-CE-139-M/G,,SIG/RAT,,BRA) M062900400003 DECAY-DATA (58-CE-139-G,138.D,DG,165.8,0.80) M062900400004 (58-CE-139-M,56.8SEC,DG,754.2,0.93) M062900400005 METHOD (ACTIV) Induced g-activity was measured. M062900400006 MISC-COL (MISC) Calculated value from quasiparticle phonon M062900400007 model model. M062900400008 ENDBIB 6 0 M062900400009 NOCOMMON 0 0 M062900400010 DATA 3 1 M062900400011 DATA DATA-ERR MISC M062900400012 NO-DIM NO-DIM NO-DIM M062900400013 .130 .008 .11 M062900400014 ENDDATA 3 0 M062900400015 ENDSUBENT 14 0 M062900499999 SUBENT M0629005 20060125 M039M062900500001 BIB 4 6 M062900500002 REACTION (60-ND-142(G,N)60-ND-141-M/G,,SIG/RAT,,BRA) M062900500003 DECAY-DATA (60-ND-141-G,2.5HR,DG,1127.,0.75) M062900500004 (60-ND-141-M,62.0SEC,DG,756.7,0.92) M062900500005 METHOD (ACTIV) Induced g-activity was measured. M062900500006 MISC-COL (MISC) Calculated value from quasiparticle phonon M062900500007 model model. M062900500008 ENDBIB 6 0 M062900500009 NOCOMMON 0 0 M062900500010 DATA 3 1 M062900500011 DATA DATA-ERR MISC M062900500012 NO-DIM NO-DIM NO-DIM M062900500013 .060 .006 .05 M062900500014 ENDDATA 3 0 M062900500015 ENDSUBENT 14 0 M062900599999 SUBENT M0629006 20060125 M039M062900600001 BIB 4 6 M062900600002 REACTION (62-SM-144(G,N)62-SM-143-M/G,,SIG/RAT,,BRA) M062900600003 DECAY-DATA (62-SM-143-G,8.8MIN,DG,1056.,0.02) M062900600004 (62-SM-143-M,66.0SEC,DG,754.0,0.9) M062900600005 METHOD (ACTIV) Induced g-activity was measured. M062900600006 MISC-COL (MISC) Calculated value from quasiparticle phonon M062900600007 model model. M062900600008 ENDBIB 6 0 M062900600009 NOCOMMON 0 0 M062900600010 DATA 3 1 M062900600011 DATA DATA-ERR MISC M062900600012 NO-DIM NO-DIM NO-DIM M062900600013 .046 .005 .05 M062900600014 ENDDATA 3 0 M062900600015 ENDSUBENT 14 0 M062900699999 ENDENTRY 6 0 M062999999999