ENTRY A0889 20240919 A119A0889000 1 SUBENT A0889001 20240919 A119A0889001 1 BIB 13 42 A0889001 2 TITLE Measurements of cross sections and decay properties of A0889001 3 the isotopes of elements 112, 114 and 116 produced in A0889001 4 the fusion reactions U-233,238, Pu-242 and A0889001 5 Cm-248+Ca-48. A0889001 6 AUTHOR (Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, A0889001 7 F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, A0889001 8 Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal,A0889001 9 A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A0889001 10 A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, A0889001 11 M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, A0889001 12 N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, P.A.Wilk, A0889001 13 R.W.Lougheed, R.I.Il'kaev, S.P.Vesnovskii) A0889001 14 REFERENCE (J,PR/C,70,064609,2004) A0889001 15 REL-REF (I,,Yu.Ts.Oganessian,J,JP/G,34,R165,2007) A0889001 16 Experimental conditions A0889001 17 (O,A0890001,Yu.Ts.Oganessian+,J,PR/C,72,034611,2005) A0889001 18 final data for 3n,4n data for U-238+48Ca and new data A0889001 19 for Am-243 + Ca-48 A0889001 20 INSTITUTE (1USALRL,4RUSEPA) A0889001 21 FACILITY (CYCLO,4ZZZDUB) U-400 Cyclotron A0889001 22 METHOD (TOF) A0889001 23 PART-DET (A) Alpha-particles and residual nuclides. A0889001 24 SAMPLE The 32-cm2 rotating targets, consisted of the enriched A0889001 25 isotopes U-233 (99.97%), U-238(99.3%), Pu-242(99.98%) A0889001 26 and Cm-248(97.4%) deposited as U(3)O(8), PuO(2) and A0889001 27 CmO(2) onto 1.5 um Ti foils to thicknesses of about A0889001 28 0.44, 0.35, 0.40 and 0.35 mg/cm**2, respectively. A0889001 29 DETECTOR (MCPLT) A 4-cm x 12-cm semiconductor detector array A0889001 30 with 12 vertical position-sensitive strips surrounded A0889001 31 by eight 4-cm x 4-cm side detectors without position A0889001 32 sensitivity, forming a box open to the front (beam) A0889001 33 side. The position-averaged detection efficiency for A0889001 34 full-energy alpha-particles emitted in the decays of A0889001 35 implanted nuclei was 87%. A0889001 36 ERR-ANALYS (DATA-ERR) No information about source of uncertainty A0889001 37 MISC-COL (MISC) Excitation energy of the compound nucleus. A0889001 38 HISTORY (20110809C) SB A0889001 39 (20130129A) New isotope 114-FL was added in Sub.003 A0889001 40 (20200214A) SD: New isotope 116-LV added to Subent 004.A0889001 41 Small corrections in all Subents. A0889001 42 (20240919A) SD: Subents were split according to A0889001 43 EXFOR rules. A0889001 44 ENDBIB 42 0 A0889001 45 NOCOMMON 0 0 A0889001 46 ENDSUBENT 45 0 A088900199999 SUBENT A0889002 20240919 A119A0889002 1 BIB 5 21 A0889002 2 REACTION (92-U-238(20-CA-48,3N)112-CN-283,,SIG) A0889002 3 DECAY-DATA (112-CN-283,,A,9540.) A0889002 4 Alpha decay (9.54+-0.06 MeV) A0889002 5 Half-life is 3.8+-1.2,0.7 sec A0889002 6 This is the average alpha energy from 19/19 events A0889002 7 COMMENT *By authors*. In view of the present results, the A0889002 8 non-observation of decay chains of element 112 isotopesA0889002 9 in the reaction of 238U with 231-MeV 48Ca projectiles A0889002 10 (excitation energy of compound nuclei=32.5 MeV) A0889002 11 at LBNL (see W.Loveland+,J,PR/C,66,044617,2002) is A0889002 12 obviously due to insufficient experimental sensitivity.A0889002 13 The upper cross section limit for one event set in the A0889002 14 recent LBNL experiment 1.6 pb corresponds to a A0889002 15 statistically valid 84% upper limit of 2.9 pb A0889002 16 (see K.-H.Schmidt+,J,ZP/A,316,19,1984) provided all A0889002 17 the parameters of the experiment were chosen optimally.A0889002 18 STATUS (TABLE,,Yu.Ts.Oganessian+,J,PR/C,70,064609,2004) Tbl. IA0889002 19 and values from the text on p.064609-7 A0889002 20 HISTORY (20200214A) SD: STATUS updated. A0889002 21 (20240919A) SD: Subent was split in two (see A0889002 22 Subent 005). A0889002 23 ENDBIB 21 0 A0889002 24 NOCOMMON 0 0 A0889002 25 DATA 6 1 A0889002 26 EN DATA +DATA-ERR -DATA-ERR MISC-MIN MISC-MAX A0889002 27 MEV PB PB PB MEV MEV A0889002 28 234. 2.5 1.8 1.1 32.9 37.2A0889002 29 ENDDATA 3 0 A0889002 30 ENDSUBENT 29 0 A088900299999 SUBENT A0889003 20240919 A119A0889003 1 BIB 4 10 A0889003 2 REACTION (94-PU-242(20-CA-48,4N)114-FL-286,,SIG) A0889003 3 DECAY-DATA (114-FL-286,,A,10190.) A0889003 4 Alpha decay (10.19+-0.06 MeV) A0889003 5 Half-life is 0.13+-0.04,0.02 sec A0889003 6 This is the average alpha energy from 19/12 events A0889003 7 STATUS (TABLE,,Yu.Ts.Oganessian+,J,PR/C,72,034611,2005) Tbl.IIA0889003 8 (TABLE,,Yu.Ts.Oganessian+,J,PR/C,70,064609,2004) Tbl.I A0889003 9 and values from the text on p.064609-7 A0889003 10 HISTORY (20200214A) SD: Subent was split in three (see A0889003 11 Subents 006, 007). STATUS updated. A0889003 12 ENDBIB 10 0 A0889003 13 NOCOMMON 0 0 A0889003 14 DATA 6 1 A0889003 15 EN DATA +DATA-ERR -DATA-ERR MISC-MIN MISC-MAX A0889003 16 MEV PB PB PB SEE TEXT SEE TEXT A0889003 17 244. 4.5 3.6 1.9 38.0 42.4A0889003 18 ENDDATA 3 0 A0889003 19 ENDSUBENT 18 0 A088900399999 SUBENT A0889004 20240919 A119A0889004 1 BIB 5 15 A0889004 2 REACTION (96-CM-248(20-CA-48,4N)116-LV-292,,SIG) A0889004 3 DECAY-DATA (116-LV-292,,A,10660.) A0889004 4 Alpha decay (10.66+-0.07 MeV) A0889004 5 Half-life is 18+-16,6 msec A0889004 6 This is the average alpha energy from 4/5 events A0889004 7 REL-REF (M,,Yu.Ts.Oganessian+,J,PAN,64,1349,2001) A0889004 8 transl. of Yad.Fiz.,64,1427,2001 A0889004 9 (M,,Yu.Ts.Oganessian+,J,PR/C,63,011301,2000) A0889004 10 STATUS (TABLE,,Yu.Ts.Oganessian+,J,PR/C,72,034611,2005) Tbl.IIA0889004 11 (TABLE,,Yu.Ts.Oganessian+,J,PR/C,70,064609,2004) Tbl.I A0889004 12 and values from the text on p.064609-12 A0889004 13 HISTORY (20200214A) SD: SF4=116-* -> 116-LV in REACTION, A0889004 14 DECAY-DATA codes. STATUS updated. A0889004 15 (20200214A) SD: Subent was split in two (see A0889004 16 Subent 008). STATUS updated. A0889004 17 ENDBIB 15 0 A0889004 18 NOCOMMON 0 0 A0889004 19 DATA 6 1 A0889004 20 EN DATA +DATA-ERR -DATA-ERR MISC-MIN MISC-MAX A0889004 21 MEV PB PB PB MEV MEV A0889004 22 247. 3.3 2.5 1.4 36.8 41.1A0889004 23 ENDDATA 3 0 A0889004 24 ENDSUBENT 23 0 A088900499999 SUBENT A0889005 20240919 A119A0889005 1 BIB 4 15 A0889005 2 REACTION (92-U-238(20-CA-48,4N)112-CN-282,,SIG) A0889005 3 COMMENT *By authors*.In view of the present results, the non- A0889005 4 observation of decay chains of element 112 isotopes in A0889005 5 the reaction of 238U with 231-MeV 48Ca projectiles A0889005 6 (excitation energy of compound nuclei=32.5 MeV) A0889005 7 at LBNL (see W.Loveland+,J,PR/C,66,044617,2002) is A0889005 8 obviously due to insufficient experimental sensitivity.A0889005 9 The upper cross section limit for one event set in the A0889005 10 recent LBNL experiment 1.6 pb corresponds to a A0889005 11 statistically valid 84% upper limit of 2.9 pb A0889005 12 (see K.-H.Schmidt+,J,ZP/A,316,19,1984) provided all A0889005 13 the parameters of the experiment were chosen optimally.A0889005 14 STATUS (TABLE,,Yu.Ts.Oganessian+,J,PR/C,70,064609,2004) Tbl. IA0889005 15 and values from the text on p.064609-7 A0889005 16 HISTORY (20240919T) SD: Part of Subent 002. A0889005 17 ENDBIB 15 0 A0889005 18 NOCOMMON 0 0 A0889005 19 DATA 6 1 A0889005 20 EN DATA +DATA-ERR -DATA-ERR MISC-MIN MISC-MAX A0889005 21 MEV PB PB PB MEV MEV A0889005 22 240. 0.6 1.6 0.5 37.7 41.9A0889005 23 ENDDATA 3 0 A0889005 24 ENDSUBENT 23 0 A088900599999 SUBENT A0889006 20240919 A119A0889006 1 BIB 4 9 A0889006 2 REACTION (94-PU-242(20-CA-48,3N)114-FL-287,,SIG) A0889006 3 DECAY-DATA (114-FL-287,,A,10020.) A0889006 4 Alpha decay (10.02+-0.06 MeV) A0889006 5 Half-life is 0.48+-0.16,0.09 sec A0889006 6 This is the average alpha energy from 16/16 events A0889006 7 STATUS (TABLE,,Yu.Ts.Oganessian+,J,PR/C,72,034611,2005) Tbl.IIA0889006 8 (TABLE,,Yu.Ts.Oganessian+,J,PR/C,70,064609,2004) Tbl.I A0889006 9 and values from the text on p.064609-7 A0889006 10 HISTORY (20240919T) SD: Part of Subent 003. A0889006 11 ENDBIB 9 0 A0889006 12 NOCOMMON 0 0 A0889006 13 DATA 6 1 A0889006 14 EN DATA +DATA-ERR -DATA-ERR MISC-MIN MISC-MAX A0889006 15 MEV PB PB PB SEE TEXT SEE TEXT A0889006 16 244. 3.6 3.4 1.7 38.0 42.4A0889006 17 ENDDATA 3 0 A0889006 18 ENDSUBENT 17 0 A088900699999 SUBENT A0889007 20240919 A119A0889007 1 BIB 4 9 A0889007 2 REACTION (94-PU-242(20-CA-48,2N)114-FL-288,,SIG) A0889007 3 DECAY-DATA (114-FL-288,,A,9940.) A0889007 4 Alpha decay (9.94+-0.06 MeV) A0889007 5 Half-life is 0.80+-0.27,0.16 sec A0889007 6 This is the average alpha energy from 16/16 events A0889007 7 STATUS (TABLE,,Yu.Ts.Oganessian+,J,PR/C,72,034611,2005) Tbl.IIA0889007 8 (TABLE,,Yu.Ts.Oganessian+,J,PR/C,70,064609,2004) Tbl.I A0889007 9 and values from the text on p.064609-7 A0889007 10 HISTORY (20240919T) SD: Part of Subent 003. A0889007 11 ENDBIB 9 0 A0889007 12 NOCOMMON 0 0 A0889007 13 DATA 6 1 A0889007 14 EN DATA +DATA-ERR -DATA-ERR MISC-MIN MISC-MAX A0889007 15 MEV PB PB PB SEE TEXT SEE TEXT A0889007 16 235. 0.5 1.4 0.4 30.4 34.7A0889007 17 ENDDATA 3 0 A0889007 18 ENDSUBENT 17 0 A088900799999 SUBENT A0889008 20240919 A119A0889008 1 BIB 5 12 A0889008 2 REACTION (96-CM-248(20-CA-48,3N)116-LV-293,,SIG) A0889008 3 DECAY-DATA (116-LV-293,,A,10540.) A0889008 4 Alpha decay (10.54+-0.06 MeV) A0889008 5 Half-life is 61+-57,20 msec A0889008 6 This is the average alpha energy from 4/4 events A0889008 7 REL-REF (M,,Yu.Ts.Oganessian+,J,PAN,64,1349,2001) A0889008 8 transl. of Yad.Fiz.,64,1427,2001 A0889008 9 (M,,Yu.Ts.Oganessian+,J,PR/C,63,011301,2000) A0889008 10 STATUS (TABLE,,Yu.Ts.Oganessian+,J,PR/C,72,034611,2005) Tbl.IIA0889008 11 (TABLE,,Yu.Ts.Oganessian+,J,PR/C,70,064609,2004) Tbl.I A0889008 12 and values from the text on p.064609-12 A0889008 13 HISTORY (20240919T) SD: Part of Subent 004. A0889008 14 ENDBIB 12 0 A0889008 15 NOCOMMON 0 0 A0889008 16 DATA 6 1 A0889008 17 EN DATA +DATA-ERR -DATA-ERR MISC-MIN MISC-MAX A0889008 18 MEV PB PB PB MEV MEV A0889008 19 247. 1.2 1.8 0.8 36.8 41.1A0889008 20 ENDDATA 3 0 A0889008 21 ENDSUBENT 20 0 A088900899999 ENDENTRY 8 0 A088999999999