ENTRY 41569 20140902 41654156900000001 SUBENT 41569001 20140902 41654156900100001 BIB 10 26 4156900100002 INSTITUTE (4RUSNIR) 4156900100003 REFERENCE (J,RAK,54,(4),352,2012) 4156900100004 (J,RDC,54,(4),383,2012) Engl.translation of J,RAK,54 4156900100005 #doi:10.1134/S1066362212040121 4156900100006 AUTHOR (R.A.Kuznetsov,P.S.Butkalyuk,V.A.Tarasov,A.Yu.Baranov, 4156900100007 I.L.Butkalyuk,E.G.Romanov,V.N.Kupriyanov,E.V.Kazakova) 4156900100008 TITLE Yields of activation products in Ra-226 irradiation in 4156900100009 the high-flux SM reactor. 4156900100010 FACILITY (REAC,4RUSNIR) SM-reactor. 4156900100011 INC-SOURCE (REAC) 4156900100012 INC-SPECT Thermal neutron flux 1.5E+15 1/cm**2/sec. 4156900100013 MCNP determined: thermal flux - 1.51E+15, 4156900100014 resonance neutrons 1.32E+14, fast neutrons - 1.34E+15. 4156900100015 Neutron gas temperature 493 K. 4156900100016 METHOD (ACTIV) 25 effective days irradiation in the neutron 4156900100017 trap of SM-reactor, 17 days cooling. 4156900100018 (CHSEP) Ra activation products were chemically 4156900100019 isolated. 4156900100020 (ASPEC) Alpha spectroscopy, 4156900100021 (GSPEC) gamma spectroscopy, 4156900100022 (MASSP) mass spectrometry 4156900100023 for yields determination. 4156900100024 SAMPLE 3.16 mg of Ra-226CO(3) contain 2.5 mg of Ra-226. 4156900100025 Placed in quartz capsule. 4156900100026 HISTORY (20130307C) M.M. 4156900100027 (20140901A) Ra-226 -> Ra-227 in REACTION. 4156900100028 ENDBIB 26 0 4156900100029 COMMON 1 3 4156900100030 KT-K 4156900100031 K 4156900100032 493. 4156900100033 ENDCOMMON 3 0 4156900100034 ENDSUBENT 33 0 4156900199999 SUBENT 41569002 20140902 41654156900200001 BIB 5 13 4156900200002 REACTION (88-RA-227(N,G)88-RA-228,,SIG,,SPA) 4156900200003 DECAY-DATA (88-RA-227,42.2MIN) 4156900200004 (88-RA-228,5.7YR) 4156900200005 ADD-RES Activities of major components in irradiated Ra target:4156900200006 Isotope Yield,Bq [mCi] 4156900200007 Ac-227 (1.9+-0.2)*10**8 [5.1+-0.5] 4156900200008 Th-228 (3.8+-0.26)*10**9 [103+-7] 4156900200009 Th-229 (1.4+-0.2)*10**5 [0.0039+-0.0006] 4156900200010 Th-230 (2.8+-0.2)*10**-3 [(7.63+-0.58)*10**-5] 4156900200011 Ra-228 (6.7+-1.1)*10**7 [1.8+-0.3] 4156900200012 STATUS (TABLE) Text of abstract in J,RAK,54,(4),352,2012 4156900200013 (PRELM) Preliminary data . 4156900200014 HISTORY (20140901A) Ra-226 -> Ra-227 in REACTION. 4156900200015 ENDBIB 13 0 4156900200016 NOCOMMON 0 0 4156900200017 DATA 1 1 4156900200018 DATA-APRX 4156900200019 B 4156900200020 1.5E+3 4156900200021 ENDDATA 3 0 4156900200022 ENDSUBENT 21 0 4156900299999 ENDENTRY 2 0 4156999999999