ENTRY A0889 20200214 A093A088900000001 SUBENT A0889001 20200214 A093A088900100001 BIB 13 39 A088900100002 TITLE Measurements of cross sections and decay properties of A088900100003 the isotopes of elements 112, 114 and 116 produced in A088900100004 the fusion reactions U-233,238, Pu-242 and A088900100005 Cm-248+Ca-48. A088900100006 AUTHOR (Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, A088900100007 F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, A088900100008 Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal,A088900100009 A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A088900100010 A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, A088900100011 M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, A088900100012 N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, P.A.Wilk, A088900100013 R.W.Lougheed, R.I.Il'kaev, S.P.Vesnovskii) A088900100014 REFERENCE (J,PR/C,70,064609,2004) A088900100015 (J,PR/C,72,034611,2005) final data for 3n,4n data for A088900100016 U-238+48Ca and new data for Am-243 + Ca-48 (see A0890) A088900100017 REL-REF (I,,Yu.Ts.Oganessian,J,JP/G,34,R165,2007) A088900100018 Experimental conditions A088900100019 INSTITUTE (1USALRL,4RUSEPA) A088900100020 FACILITY (CYCLO,4ZZZDUB) U-400 Cyclotron A088900100021 METHOD (TOF) A088900100022 PART-DET (A) And Residual Nuclides. A088900100023 SAMPLE The 32-cm2 rotating targets, consisted of the enriched A088900100024 isotopes U-233 (99.97%), U-238(99.3%), Pu-242(99.98%) A088900100025 and Cm-248(97.4%) deposited as U(3)O(8), PuO(2) and A088900100026 CmO(2) onto 1.5 mum Ti foils to thicknesses of about A088900100027 0.44, 035, 0.40 and 0.35 mg/cm**2, respectively. A088900100028 DETECTOR (MCPLT) a 4-cm*12-cm semiconductor detector array withA088900100029 12 vertical position-sensitive strips surrounded by A088900100030 eight 4-cm*4-cm side detectors without position A088900100031 sensitivity, forming a box open to the front (beam) A088900100032 side. The position-averaged detection efficiency for A088900100033 full-energy alpha-particles emitted in the decays of A088900100034 implanted nuclei was 87%. A088900100035 ERR-ANALYS (DATA-ERR) No information about source of uncertainty A088900100036 MISC-COL (MISC) Excitation energy of the compound nucleus. A088900100037 HISTORY (20110809C) SB A088900100038 (20130129A) New isotope 114-FL was added in Sub.003 A088900100039 (20200214A) SD: New isotope 116-LV added to Subent 004.A088900100040 Small corrections in all Subents. A088900100041 ENDBIB 39 0 A088900100042 NOCOMMON 0 0 A088900100043 ENDSUBENT 42 0 A088900199999 SUBENT A0889002 20200214 A093A088900200001 BIB 5 20 A088900200002 REACTION 1(92-U-238(20-CA-48,3N)112-CN-283,,SIG) A088900200003 2(92-U-238(20-CA-48,4N)112-CN-282,,SIG) A088900200004 DECAY-DATA1(112-CN-283,,A,9540.) A088900200005 Alpha decay (9.54+-0.06 MeV) A088900200006 Half-life is 3.8+-1.2,0.7 sec A088900200007 This is the average alpha energy from 19/19 events A088900200008 COMMENT *By authors*.In view of the present results, the non- A088900200009 observation of decay chains of element 112 isotopes in A088900200010 the reaction of 238U with 231-MeV 48Ca projectiles A088900200011 (excitation energy of compound nuclei=32.5 MeV) A088900200012 at LBNL (see W.Loveland+,J,PR/C,66,044617,2002) is A088900200013 obviously due to insufficient experimental sensitivity.A088900200014 The upper cross section limit for one event set in the A088900200015 recent LBNL experiment 1.6 pb corresponds to a A088900200016 statistically valid 84% upper limit of 2.9 pb A088900200017 (see K.-H.Schmidt+,J,ZP/A,316,19,1984) provided all A088900200018 the parameters of the experiment were chosen optimally.A088900200019 STATUS (TABLE) Tbl. I and Values from the text on p.064609-7 A088900200020 of Phys.Rev.,C70(2004)064609 A088900200021 HISTORY (20200214A) SD: STATUS updated. A088900200022 ENDBIB 20 0 A088900200023 NOCOMMON 0 0 A088900200024 DATA 9 2 A088900200025 EN DATA 1+DATA-ERR 1-DATA-ERR 1DATA 2+DATA-ERR 2A088900200026 -DATA-ERR 2MISC-MIN MISC-MAX A088900200027 MEV PB PB PB PB PB A088900200028 PB MEV MEV A088900200029 234. 2.5 1.8 1.1 A088900200030 32.9 37.2 A088900200031 240. 0.6 1.6 A088900200032 0.5 37.7 41.9 A088900200033 ENDDATA 8 0 A088900200034 ENDSUBENT 33 0 A088900299999 SUBENT A0889003 20200214 A093A088900300001 BIB 4 19 A088900300002 REACTION 1(94-PU-242(20-CA-48,4N)114-FL-286,,SIG) A088900300003 2(94-PU-242(20-CA-48,3N)114-FL-287,,SIG) A088900300004 3(94-PU-242(20-CA-48,2N)114-FL-288,,SIG) A088900300005 DECAY-DATA1(114-FL-286,,A,10190.) A088900300006 Alpha decay (10.19+-0.06 MeV) A088900300007 Half-life is 0.13+-0.04,0.02 sec A088900300008 This is the average alpha energy from 19/12 events A088900300009 2(114-FL-287,,A,10020.) A088900300010 Alpha decay (10.02+-0.06 MeV) A088900300011 Half-life is 0.48+-0.16,0.09 sec A088900300012 This is the average alpha energy from 16/16 events A088900300013 3(114-FL-288,,A,9940.) A088900300014 Alpha decay (9.94+-0.06 MeV) A088900300015 Half-life is 0.80+-0.27,0.16 sec A088900300016 This is the average alpha energy from 16/16 events A088900300017 STATUS (TABLE) Tbl. II from Phys. Rev.,C72(2005)034611 and A088900300018 Tbl.I and values from the text on p.064609-7 A088900300019 of Phys.Rev.,C70(2004)064609 A088900300020 HISTORY (20200214A) SD: STATUS updated. A088900300021 ENDBIB 19 0 A088900300022 NOCOMMON 0 0 A088900300023 DATA 12 2 A088900300024 EN DATA 1+DATA-ERR 1-DATA-ERR 1DATA 2+DATA-ERR 2A088900300025 -DATA-ERR 2DATA 3+DATA-ERR 3-DATA-ERR 3MISC-MIN MISC-MAX A088900300026 MEV PB PB PB PB PB A088900300027 PB PB PB PB SEE TEXT SEE TEXT A088900300028 235. A088900300029 0.5 1.4 0.4 30.4 34.7 A088900300030 244. 4.5 3.6 1.9 3.6 3.4 A088900300031 1.7 38.0 42.4 A088900300032 ENDDATA 8 0 A088900300033 ENDSUBENT 32 0 A088900399999 SUBENT A0889004 20200214 A093A088900400001 BIB 5 18 A088900400002 REACTION 1(96-CM-248(20-CA-48,4N)116-LV-292,,SIG) A088900400003 2(96-CM-248(20-CA-48,3N)116-LV-293,,SIG) A088900400004 DECAY-DATA1(116-LV-292,,A,10660.) A088900400005 Alpha decay (10.66+-0.07 MeV) A088900400006 Half-life is 18+-16,6 msec A088900400007 This is the average alpha energy from 4/5 events A088900400008 2(116-LV-293,,A,10540.) A088900400009 Alpha decay (10.54+-0.06 MeV) A088900400010 Half-life is 61+-57,20 msec A088900400011 This is the average alpha energy from 4/4 events A088900400012 REL-REF (M,,Yu.Ts.Oganessian+,J,PAN,64,1349,2001) A088900400013 transl. of Yad.Fiz.,64,1427,2001 A088900400014 (M,,Yu.Ts.Oganessian+,J,PR/C,63,011301,2000) A088900400015 STATUS (TABLE) Tbl. II from Phys. Rev.,C72(2005)034611 and A088900400016 Tbl.I and values from the text on p.064609-12 A088900400017 of Phys.Rev.,C70(2004)064609 A088900400018 HISTORY (20200214A) SD: SF4=116-* -> 116-LV in REACTION, A088900400019 DECAY-DATA codes. STATUS updated. A088900400020 ENDBIB 18 0 A088900400021 NOCOMMON 0 0 A088900400022 DATA 9 1 A088900400023 EN DATA 1+DATA-ERR 1-DATA-ERR 1DATA 2+DATA-ERR 2A088900400024 -DATA-ERR 2MISC-MIN MISC-MAX A088900400025 MEV PB PB PB PB PB A088900400026 PB MEV MEV A088900400027 247. 3.3 2.5 1.4 1.2 1.8 A088900400028 0.8 36.8 41.1 A088900400029 ENDDATA 6 0 A088900400030 ENDSUBENT 29 0 A088900499999 ENDENTRY 4 0 A088999999999