ENTRY M0229 20140716 M074M022900000001 SUBENT M0229001 20140716 M074M022900100001 BIB 15 31 M022900100002 TITLE Discovery of activation level of energy 3.55 MeV in M022900100003 the photoexcitation of isomeric state (T(1/2)=18 M022900100004 microsec) by bremsstrahlung beam in Ta-181 nuclei. M022900100005 AUTHOR (A.P.Dubenskiy,V.P.Dubenskiy,E.A.Boykova) M022900100006 REFERENCE (J,IZV,51,(1),40,1987) M022900100007 (J,BAS,51,(1),36,1987) M022900100008 English translation of IZV,51,(1),40,1987. M022900100009 INSTITUTE (4RUSFTI) M022900100010 FACILITY (BETAT,4RUSFTI) 4 MeV betatron. M022900100011 INC-SOURCE (BRST) End-point energy from 2.8 MeV up to 4.0 MeV. M022900100012 METHOD (ACTIV) M022900100013 DETECTOR (NAICR) A large NAI crystal 150*100 mm-sq was used to M022900100014 raise of effectivity of g-quanta detection. It was M022900100015 placed in lead block, which was protected from the M022900100016 direct bremsstrahlung beam by lead filter. M022900100017 PART-DET (G) M022900100018 SAMPLE Thickness is of about 4 g/cm-sq. The size of the M022900100019 sample is equal to 120*120 mm-sq. It was placed at M022900100020 the angle of 45 degrees with respect to the M022900100021 direction of the bremsstrahlung beam. M022900100022 ADD-RES (G-SPC) M022900100023 ERR-ANALYS (ERR-S) Statistical errors are presented. M022900100024 COMMENT The yield curve was analysed by using hi-2 method for M022900100025 determining the activation level energy. M022900100026 The existence of the 3.55 MeV level was determined by M022900100027 the change of the yield curve slope. M022900100028 STATUS (CURVE) M022900100029 HISTORY (19900226C) M022900100030 (19910202A) Corrected by V.Varlamov, V.Mclane. M022900100031 (20140716A) Corrected by V.Varlamov: REFERENCE, M022900100032 dates, BRS -> BRA, lowercase. M022900100033 ENDBIB 31 0 M022900100034 NOCOMMON 0 0 M022900100035 ENDSUBENT 34 0 M022900199999 SUBENT M0229002 20140716 M074M022900200001 BIB 3 4 M022900200002 REACTION (73-TA-181(G,INL)73-TA-181,PAR,SIG,,BRA/REL) M022900200003 HISTORY (20140716A) Corrected by V.Varlamov: IN REACTION - M022900200004 INL, PAR, G, BRS -> BRA. M022900200005 STATUS Data from Fig. 2. M022900200006 ENDBIB 4 0 M022900200007 COMMON 1 3 M022900200008 E M022900200009 KEV M022900200010 482. M022900200011 ENDCOMMON 3 0 M022900200012 DATA 3 9 M022900200013 EN-MAX DATA ERR-S M022900200014 MEV ARB-UNITS ARB-UNITS M022900200015 2.81 0.046 0.033 M022900200016 3.01 0.123 0.033 M022900200017 3.18 0.183 0.031 M022900200018 3.36 0.294 0.027 M022900200019 3.51 0.365 0.031 M022900200020 3.6 0.421 0.039 M022900200021 3.71 0.578 0.035 M022900200022 3.79 0.660 0.053 M022900200023 3.96 0.987 0.050 M022900200024 ENDDATA 11 0 M022900200025 ENDSUBENT 24 0 M022900299999 ENDENTRY 2 0 M022999999999