ENTRY M0809 20130131 M066M080900000001 SUBENT M0809001 20130131 M066M080900100001 BIB 15 35 M080900100002 TITLE Photoexcitation of 180Ta by 60Co and 137Cs gamma rays. M080900100003 AUTHOR (L.Lakosi,T.C.Nguen) M080900100004 INSTITUTE (3HUNII) M080900100005 REFERENCE (J,NP/A,697,44,2002) M080900100006 #doi:10.1016/S0375-9474(01)01232-5 M080900100007 METHOD (EXTB,SITA) M080900100008 INC-SOURCE (MPH) Monoenergetic gamma rays (60Co, 137Cs sources). M080900100009 DETECTOR (GE) Large planar Ge detector in a NaI(TL) M080900100010 anticoincidence shielding. M080900100011 SAMPLE The natural Ta disc of diameter 40 by 0.33 mm in M080900100012 thickness, 5.65 g mass. M080900100013 ANALYSIS Results of 180Ta-m activation by 60Co and 137Cs gamma M080900100014 rays were obtained by studying its depopulation. M080900100015 The 180Ta-g activity (T1/2 = 8.1 hour) was detected M080900100016 via Hf Ka X-rays. M080900100017 From that effective and integrated cross sections M080900100018 were inferred for the reaction 180Ta-m(g,g')180Ta. M080900100019 The former was defined as ratio of the activity to M080900100020 the primary flux, whereas for obtaining the latter M080900100021 the activity was to be related to the flux density M080900100022 taken at resonance energy, i.e. energy of the M080900100023 activation level. M080900100024 MONITOR (49-IN-115(G,INL)49-IN-115-M,,SIG) M080900100025 REL-REF (R,,L.Lakosi+,J,NIM,114,13,1974) Data on cross M080900100026 section for 115In-m activity. M080900100027 ERR-ANALYS (ERR-S) Statistical errors are presented. M080900100028 STATUS (TABLE) Data from Table 1. M080900100029 COMMENT The depopulation of the quasistable 180Ta-m (Jpi = M080900100030 9/2-, E = 75.3 eV, T1/2 = 1.2E+15Y) was studied by M080900100031 irradiating natural Ta samples with strong 60Co and M080900100032 137Cs g-ray sources. M080900100033 HISTORY (20110228C) Data were compiled at the Russia MSU SINP M080900100034 CDFE by V.Varlamov. M080900100035 (20130131A) Corrected by V.Varlamov: STATUS, HISTORY, M080900100036 REACTION. M080900100037 ENDBIB 35 0 M080900100038 NOCOMMON 0 0 M080900100039 ENDSUBENT 38 0 M080900199999 SUBENT M0809002 20130131 M066M080900200001 BIB 2 2 M080900200002 REACTION (73-TA-180-M(G,INL)73-TA-180-G,,SIG) M080900200003 HISTORY (20110228C) VV: target and final nuclei. M080900200004 ENDBIB 2 0 M080900200005 NOCOMMON 0 0 M080900200006 DATA 5 2 M080900200007 EN DATA ERR-S DATA-MAX ERR-S M080900200008 MEV NB NB NB NB M080900200009 .662 31. 15. M080900200010 1.33 128. 30. M080900200011 ENDDATA 4 0 M080900200012 ENDSUBENT 11 0 M080900299999 SUBENT M0809003 20130131 M066M080900300001 BIB 2 2 M080900300002 REACTION (73-TA-180-M(G,INL)73-TA-180-G,,INT) M080900300003 HISTORY (20110228C) VV: target and final nuclei. M080900300004 ENDBIB 2 0 M080900300005 NOCOMMON 0 0 M080900300006 DATA 5 2 M080900300007 EN-MAX DATA ERR-S DATA-MAX ERR-S M080900300008 MEV MB*MEV MB*MEV MB*MEV MB*MEV M080900300009 .662 25. 17. M080900300010 1.33 143. 53. M080900300011 ENDDATA 4 0 M080900300012 ENDSUBENT 11 0 M080900399999 ENDENTRY 3 0 M080999999999