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NSR database version of May 24, 2024.

Search: Author = J.F.Wild

Found 63 matches.

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2007ST18      Nucl.Phys. A787, 388c (2007)

N.J.Stoyer, J.H.Landrum, P.A.Wilk, K.J.Moody, J.M.Kenneally, D.A.Shaughnessy, M.A.Stoyer, J.F.Wild, R.W.Lougheed, S.N.Dmitriev, Yu.Ts.Oganessian, S.V.Shishkin, N.V.Aksenov, E.E.Tereshatov, G.A.Bozhikov, G.K.Vostokin, V.K.Utyonkov, A.A.Yeremin

Chemical Identification of a Long-Lived Isotope of Dubnium, a Descendant of Element 115

NUCLEAR REACTIONS 238U(48Ca, 3n), E=247 MeV; measured super heavy element yield, Eα, Iα; analyzed production σ. Detailed chemical analysis procedure given.

NUCLEAR STRUCTURE 268Db, 272Bh, 276Mt, 280Rg, 284Nh, 288Mc; analyzed superheavy element production and decay data.

RADIOACTIVITY 268Db(SF); 272Bh, 276Mt, 280Rg, 284Nh, 288Mc(α); measured Eα, E(fragment), T1/2.

doi: 10.1016/j.nuclphysa.2006.12.060
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2006OG05      Phys.Rev. C 74, 044602 (2006)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, R.N.Sagaidak, I.V.Shirokovsky, Yu.S.Tsyganov, A.A.Voinov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, K.Subotic, V.I.Zagrebaev, G.K.Vostokin, M.G.Itkis, K.J.Moody, J.B.Patin, D.A.Shaughnessy, M.A.Stoyer, N.J.Stoyer, P.A.Wilk, J.M.Kenneally, J.H.Landrum, J.F.Wild, R.W.Lougheed

Synthesis of the isotopes of elements 118 and 116 in the 249Cf and 245Cm + 48Ca fusion reactions

NUCLEAR REACTIONS 245Cm(48Ca, 2n), (48Ca, 3n), E=249, 255 MeV; 249Cf(48Ca, 3n), E=251 MeV; measured Eα, αα-coin, fission fragment spectra following residual nucleus decay; deduced σ.

RADIOACTIVITY 294Og, 290,291Lv, 286,287Fl, 283Cn, 279Ds, 275Hs, 271Sg(α) [from 245Cm, 249Cf(48Ca, xn) and subsequent decay]; measured Eα, T1/2. 282Cn, 267Rf(SF) [from α-decay of 286Rf and 271Sg]; measured fission fragment spectra, T1/2.

doi: 10.1103/PhysRevC.74.044602
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2005DM03      Mendeleev Commun. 15, 1 (2005)

S.N.Dmitriev, Y.T.Oganessyan, V.K.Utyonkov, S.V.Shishkin, A.V.Yeremin, Y.V.Lobanov, Y.S.Tsyganov, V.I.Chepygin, E.A.Sokol, G.K.Vostokin, N.V.Aksenov, M.Hussonnois, M.G.Itkis, H.W.Gaggeler, D.Schumann, H.Bruchertseifer, R.Eichler, D.A.Shaughnessy, P.A.Wilk, J.M.Kenneally, M.A.Stoyer, J.F.Wild

Chemical identification of dubnium as a decay product of element 115 produced in the reaction 48Ca + 243Am

NUCLEAR REACTIONS 243Am(48Ca, 3n), E=247 MeV; measured super heavy element yield, Eα, Iα; analyzed production σ. Radiochemical experiment, identification of the long-lived decay product dubnium.

NUCLEAR STRUCTURE 268Db, 272Bh, 276Mt, 280Rg, 284Nh, 288Mc; analyzed superheavy element production and decay data.

RADIOACTIVITY 268Db(SF); 272Bh, 276Mt, 280Rg, 284Nh, 288Mc(α); measured Eα, E(fragment), T1/2.

doi: 10.1070/MC2005v015n01ABEH002077
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2005OG02      Phys.Rev. C 72, 034611 (2005)

Yu.Ts.Oganessian, V.K.Utyonkov, S.N.Dmitriev, Yu.V.Lobanov, M.G.Itkis, A.N.Polyakov, Yu.S.Tsyganov, A.N.Mezentsev, A.V.Yeremin, A.A.Voinov, E.A.Sokol, G.G.Gulbekian, S.L.Bogomolov, S.Iliev, V.G.Subbotin, A.M.Sukhov, G.V.Buklanov, S.V.Shishkin, V.I.Chepigin, G.K.Vostokin, N.V.Aksenov, M.Hussonnois, K.Subotic, V.I.Zagrebaev, K.J.Moody, J.B.Patin, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, P.A.Wilk, R.W.Lougheed, H.W.Gaggeler, D.Schumann, H.Bruchertseifer, R.Eichler

Synthesis of elements 115 and 113 in the reaction 243Am + 48Ca

NUCLEAR REACTIONS 243Am(48Ca, 3n), (48Ca, 4n), E=248, 253 MeV; measured delayed Eα, αα-coin; deduced σ.

RADIOACTIVITY 287,288Mc, 283,284Nh, 279,280Rg, 275,276Mt, 272Bh(α) [from 243Am(48Ca, xn) and subsequent decay]; measured Eα, T1/2; deduced Qα. 267,268Db(SF); measured T1/2.

doi: 10.1103/PhysRevC.72.034611
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2005OG03      Eur.Phys.J. A 25, Supplement 1, 589 (2005)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, P.A.Wilk, R.W.Lougheed

New elements from Dubna

NUCLEAR REACTIONS 238U(48Ca, 3n), (48Ca, 4n), 233U, 242Pu(48Ca, 2n), (48Ca, 3n), (48Ca, 4n), E ≈ 230-250 MeV; measured σ.

RADIOACTIVITY 294Og, 290,291,292,293Lv, 287,288,289Fl, 285Cn, 275Hs(α); 286Fl, 283Cn, 279Ds, 271Sg(α), (SF);282,284Cn, 281Ds, 267Rf(SF); measured Eα, T1/2, branching ratios.

doi: 10.1140/epjad/i2005-06-134-9
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2005ST38      Eur.Phys.J. A 25, Supplement 1, 595 (2005)

M.A.Stoyer, J.B.Patin, J.M.Kenneally, K.J.Moody, D.A.Shaughnessy, N.J.Stoyer, J.F.Wild, P.A.Wilk, V.K.Utyonkov, Yu.Ts.Oganessian

Random probability analysis of recent 48Ca experiments

NUCLEAR REACTIONS 245Cm(48Ca, 2n), 242,244Pu, 243Am, 245Cm, 249Cf(48Ca, 3n), 242,244Pu(48Ca, 4n), 244Pu(48Ca, 5n), E not given; calculated probabilities for random event observation.

doi: 10.1140/epjad/i2005-06-125-x
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2004OG03      Phys.Rev. C 69, 021601 (2004); Erratum Phys.Rev. C 69, 029902 (2004)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, R.W.Lougheed

Experiments on the synthesis of element 115 in the reaction 243Am(48Ca, xn)291-x115

NUCLEAR REACTIONS 243Am(48Ca, 3n), (48Ca, 4n), E=253 MeV; measured (recoil)α-, αα-coin following residual nucleus decay; deduced production σ.

RADIOACTIVITY 287,288Mc, 283,284Nh, 279,280Rg, 275,276Mt, 272Bh(α) [from 243Am(48Ca, xn) and subsequent decay]; measured Eα, T1/2; deduced Qα. 267,268Db(SF) [from 243Am(48Ca, xn) and subsequent decay]; measured T1/2. Comparison with model predictions.

doi: 10.1103/PhysRevC.69.021601
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2004OG05      Nucl.Phys. A734, 109 (2004)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, R.W.Lougheed

Heavy Element Research at Dubna

NUCLEAR REACTIONS 245Cm(48Ca, xn), E*=33 MeV; measured Eα, αα-, (fission fragment)α-coin following residual nucleus decay; deduced evidence for 290,291Lv. 244Pu(48Ca, xn), E*=31-53 MeV; measured evaporation residue excitation functions. Studies of other reactions and nuclides reviewed.

doi: 10.1016/j.nuclphysa.2004.01.020
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2004OG07      Phys.Rev. C 69, 054607 (2004)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, R.W.Lougheed

Measurements of cross sections for the fusion-evaporation reactions 244Pu(48Ca, xn)292-x114 and 245Cm(48Ca, xn)293-x116

NUCLEAR REACTIONS 244Pu(48Ca, 3n), (48Ca, 4n), (48Ca, 5n), E=243-257 MeV; 245Cm(48Ca, 2n), (48Ca, 3n), E=243 MeV; measured production σ.

RADIOACTIVITY 290,291Lv, 286,287,288,289Fl, 283,285Cn(α) [from 244Pu, 245Cm(48Ca, xn) and subsequent decay]; measured Eα, T1/2. 282,284Cn, 279,281Ds(SF); measured fission energy, T1/2.

doi: 10.1103/PhysRevC.69.054607
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2004OG10      Prog.Theor.Phys.(Kyoto), Suppl. 154, 406 (2004)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, J.B.Patin, R.W.Lougheed

Synthesis of Superheavy Nuclei in 48Ca-Induced Reactions

NUCLEAR REACTIONS 244Pu(48Ca, 3n), (48Ca, 4n), (48Ca, 5n), E* ≈ 30-55 MeV; measured excitation functions.

RADIOACTIVITY 290,291Lv, 287,288Mc, 286,287,288,289Fl, 283,284Nh, 283,285Cn, 279,280Rg, 275,276Mt, 272Bh(α); 286Fl, 282,284Cn, 279,281Ds(SF); 294Og(α), (SF); measured Eα, T1/2.

doi: 10.1143/PTPS.154.406
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2004OG12      Phys.Rev. C 70, 064609 (2004); Erratum Phys.Rev. C 71, 029902 (2005)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, A.A.Voinov, G.V.Buklanov, K.Subotic, V.I.Zagrebaev, M.G.Itkis, J.B.Patin, K.J.Moody, J.F.Wild, M.A.Stoyer, N.J.Stoyer, D.A.Shaughnessy, J.M.Kenneally, P.A.Wilk, R.W.Lougheed, R.I.Ilkaev, S.P.Vesnovskii

Measurements of cross sections and decay properties of the isotopes of elements 112, 114, and 116 produced in the fusion reactions 233, 238U, 242Pu, and 248Cm + 48Ca

NUCLEAR REACTIONS 233,238U, 242Pu, 248Cm(48Ca, 2n), (48Ca, 3n), (48Ca, 4n), (48Ca, 5n), E* ≈ 25-55 MeV; measured excitation functions. Comparison with model predictions.

RADIOACTIVITY 271Sg, 275Hs, 279Ds, 282,283,285Cn, 286,287,288,289Fl, 292,293Lv(α); 267Rf, 271Sg, 279,281Ds, 284Cn, 286Fl(SF) [from 233,238U, 242Pu, 248Cm(48Ca, xn) and subsequent decay]; measured Eα, T1/2. Comparison with model predictions.

doi: 10.1103/PhysRevC.70.064609
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2004SH21      Nucl.Phys. A734, E5 (2004)

D.A.Shaughnessy, K.J.Moody, J.M.Kenneally, J.F.Wild, M.A.Stoyer, R.W.Lougheed, A.V.Yeremin, Yu.Ts.Oganessian

Development of a Plutonium Ceramic Target for the MASHA Separator

doi: 10.1016/j.nuclphysa.2004.03.006
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2002OG09      Eur.Phys.J. A 15, 201 (2002)

Y.T.Oganessian, V.K.Utyonkov, Y.V.Lobanov, F.S.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, O.V.Ivanov, G.V.Buklanov, K.Subotic, A.A.Voinov, M.G.Itkis, K.J.Moody, J.F.Wild, N.J.Stoyer, M.A.Stoyer, R.W.Lougheed, C.A.Laue

Synthesis of superheavy nuclei in the reactions of 244Pu and 248Cm with 48Ca

NUCLEAR REACTIONS 248Cm(48Ca, 4n), E=240 MeV; 244Pu(48Ca, 4n), (48Ca, 3n), E=236 MeV; measured delayed Eα, αα-coin.

RADIOACTIVITY 292Lv, 288,289Fl, 284,285Cn, 281Ds(α) [from 248Cm, 244Pu(48Ca, xn) and subsequent decay]; measured Eα, T1/2.

doi: 10.1140/epja/i2001-10254-4
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2001OG01      Phys.Rev. C63, 011301 (2001)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, O.V.Ivanov, G.V.Buklanov, K.Subotic, M.G.Itkis, K.J.Moody, J.F.Wild, N.J.Stoyer, M.A.Stoyer, R.W.Lougheed, C.A.Laue, Ye.A.Karelin, A.N.Tatarinov

Observation of the Decay of 292116

NUCLEAR REACTIONS 248Cm(48Ca, 4n), E=240 MeV; measured Eα, (recoil)α-, αα-coin; deduced evidence for 296Lv, 288Fl, 284Cn, 280Ds.

RADIOACTIVITY 292Lv, 288Fl, 284Cn(α); 280Ds(SF) [From 248Cm(48Ca, 4n), E=240 MeV, and subsequent decay]; measured Eα, T1/2.

doi: 10.1103/PhysRevC.63.011301
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2001OG08      Phys.Rev. C64, 054606 (2001)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, K.Subotic, O.V.Ivanov, A.N.Voinov, V.I.Zagrebaev, K.J.Moody, J.F.Wild, N.J.Stoyer, M.A.Stoyer, R.W.Lougheed

Measurements of Cross Sections for the Fusion-Evaporation Reactions 204, 206, 207, 208Pb + 48Ca and 207Pb + 34S: Decay properties of the even-even nuclides 238Cf and 250No

NUCLEAR REACTIONS 206Pb(48Ca, n), (48Ca, 2n), (48Ca, 3n), (48Ca, 4n), E=214-243 MeV; 204,207,208Pb(48Ca, 2n), E=213-220 MeV; 207Pb(34S, 3n), E=160-180 MeV; measured σ. Recoil separator. Comparison with model predictions.

RADIOACTIVITY 250No(SF) [from 204,206Pb(48Ca, xn)]; measured T1/2.

doi: 10.1103/PhysRevC.64.054606
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2001OG09      Phys.Rev. C64, 064309 (2001)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, G.V.Buklanov, K.Subotic, Yu.A.Lazarev, K.J.Moody, J.F.Wild, N.J.Stoyer, M.A.Stoyer, R.W.Lougheed, C.A.Laue

Average Charge States of Heavy Atoms in Dilute Hydrogen

ATOMIC PHYSICS Z=89-116; measured average charge states of ions vs velocity in gas-filled recoil separator. Application to synthesis of superheavy nuclei discussed.

doi: 10.1103/PhysRevC.64.064309
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2000LA34      Phys.Rev. C62, 064307 (2000)

Yu.A.Lazarev, Yu.V.Lobanov, Yu.Ts.Oganessian, V.K.Utyonkov, F.Sh.Abdullin, A.N.Polyakov, J.Rigol, I.V.Shirokovsky, Yu.S.Tsyganov, S.Iliev, V.G.Subbotin, A.M.Sukhov, G.V.Buklanov, A.N.Mezentsev, K.Subotic, K.J.Moody, N.J.Stoyer, J.F.Wild, R.W.Lougheed

Decay Properties of 257No, 261Rf, and 262Rf

NUCLEAR REACTIONS 244Pu(22Ne, 4n), (22Ne, 5n), E=114, 120 MeV; 242Pu(22Ne, 4n), (22Ne, 5n), E=114 MeV; 238U(26Mg, 4n), (26Mg, 5n), E=134, 140 MeV; measured Eα, αα-coin following residual nucleus decay; deduced production σ.

RADIOACTIVITY 261,262Rf, 257No(α) [from 244Pu(22Ne, xn) and subsequent decay]; measured Eα, T1/2.

doi: 10.1103/PhysRevC.62.064307
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2000OG05      Phys.Rev. C62, 041604 (2000)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, O.V.Ivanov, G.V.Buklanov, K.Subotic, M.G.Itkis, K.J.Moody, J.F.Wild, N.J.Stoyer, M.A.Stoyer, R.W.Lougheed

Synthesis of Superheavy Nuclei in the 48Ca + 244Pu Reaction: 288114

NUCLEAR REACTIONS 244Pu(48Ca, 4n), E ≈ 236 MeV; measured Eα, αα-coin following residual nucleus decay, production σ; deduced evidence for 288Fl, 284Cn, 280Ds.

RADIOACTIVITY 288Fl, 284Cn(α); 280Ds(SF) [from 244Pu(48Ca, 4n) and subsequent decay]; measured Eα, T1/2. Comparison with model predictions.

doi: 10.1103/PhysRevC.62.041604
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2000OG07      Yad.Fiz. 63, No 10, 1769 (2000); Phys.Atomic Nuclei 63, 1679 (2000)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, O.V.Ivanov, G.V.Buklanov, K.Subotic, M.G.Itkis, K.J.Moody, J.F.Wild, N.J.Stoyer, M.A.Stoyer, R.W.Lougheed

Synthesis of Superheavy Nuclei in 48Ca + 244Pu Interactions

NUCLEAR REACTIONS 244Pu(48Ca, 3n), (48Ca, 4n), E ≈ 236 MeV; 248Cm(48Ca, 4n), E not given; measured Eα, fission fragments, (recoil)α-, αα-coin following residual nucleus decay; deduced evidence for 292Lv, 288,289Fl, 284,285Cn, 280,281Ds, 277Hs.

RADIOACTIVITY 292Lv, 288,289Fl, 284,285Cn, 281Ds(α); 280Ds, 277Hs(SF) [from 244Pu, 248Cm(48Ca, xn) and subsequent decay ]; measured Eα, T1/2.

doi: 10.1134/1.1320137
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2000ST30      Nucl.Instrum.Methods Phys.Res. A455, 433 (2000)

N.J.Stoyer, M.A.Stoyer, J.F.Wild, K.J.Moody, R.W.Lougheed, Yu.Ts.Oganessian, V.K.Utyonkov

Random Probability Analysis of Heavy-Element Data

RADIOACTIVITY 289Fl(α); analyzed Eα, αα-coin; deduced background features. Monte Carlo random probability method, Geiger-Nuttall criteria. Comparisons with other approaches.

doi: 10.1016/S0168-9002(00)00503-9
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1999BU32      J.Phys.(London) G25, 2253 (1999)

K.Butler-Moore, R.Aryaeinejad, X.Q.Zhang, B.R.S.Babu, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, V.E.Oberacker, S.J.Zhu, J.Kormicki, L.K.Peker, J.D.Cole, Y.X.Dardenne, W.C.Ma, S.J.Asztalos, S.Y.Chu, K.E.Gregorich, I.Y.Lee, M.F.Mohar, J.O.Rasmussen, R.W.Lougheed, K.J.Moody, M.A.Stoyer, J.F.Wild, S.G.Prussin, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.V.Daniel, J.Kliman, M.Morhac

High-Spin States in Neutron-Rich Even-Even Pd Isotopes

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 112,114,116Pd deduced high-spin levels, J, π, configurations. Gammasphere array. IBA calculations, level systematics in Pd isotopes discussed.

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1999OG10      Phys.Rev.Lett. 83, 3154 (1999)

Yu.Ts.Oganessian, V.K.Utyonkov, Yu.V.Lobanov, F.Sh.Abdullin, A.N.Polyakov, I.V.Shirokovsky, Yu.S.Tsyganov, G.G.Gulbekian, S.L.Bogomolov, B.N.Gikal, A.N.Mezentsev, S.Iliev, V.G.Subbotin, A.M.Sukhov, G.V.Buklanov, K.Subotic, M.G.Itkis, K.J.Moody, J.F.Wild, N.J.Stoyer, M.A.Stoyer, R.W.Lougheed

Synthesis of Superheavy Nuclei in the 48Ca + 244Pu Reaction

NUCLEAR REACTIONS 244Pu(48Ca, 3n), E=236 MeV; measured σ, Eα, Iα(t), αα-, (recoil)α-coin following residual nucleus decay; deduced evidence for 289Fl, 285Cn, 281Ds.

RADIOACTIVITY 289Fl, 285Cn, 281Ds(α) [from 244Pu(48Ca, 3n) and subsequent decay]; measured Eα, T1/2; deduced enhanced stability with respect to neutron number.

doi: 10.1103/PhysRevLett.83.3154
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1999SA58      Phys.Rev. C60, 067303 (1999)

M.Sakhaee, S.J.Zhu, J.H.Hamilton, A.V.Ramayya, J.K.Hwang, X.Q.Zhang, L.M.Yang, L.Y.Zhu, C.Y.Gan, E.F.Jones, P.M.Gore, T.N.Ginter, B.R.S.Babu, W.C.Ma, J.Kormicki, C.J.Beyer, G.L.Long, J.K.Deng, K.Li, J.D.Cole, R.Aryaeinejad, M.W.Drigert, J.O.Rasmussen, S.Asztalos, I.Y.Lee, A.O.Macchiavelli, S.Y.Chu, K.E.Gregorich, M.F.Mohar, M.A.Stoyer, R.W.Lougheed, K.J.Moody, J.F.Wild, S.G.Prussin, G.M.Ter-Akopian, A.V.Daniel, Yu.Ts.Oganessian

Identification of Levels in Neutron-Rich 145Ce and 147Ce Nuclei

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 145,147Ce deduced high-spin levels, J, π, configurations. Gammasphere array. Comparison with particle-plus-rotor calculations.

doi: 10.1103/PhysRevC.60.067303
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1999ZH05      Phys.Rev. C59, 1316 (1999)

S.J.Zhu, J.H.Hamilton, A.V.Ramayya, M.G.Wang, J.K.Hwang, E.F.Jones, L.K.Peker, B.R.S.Babu, G.Drafta, W.C.Ma, G.L.Long, L.Y.Zhu, M.Li, C.Y.Gan, T.N.Ginter, J.Kormicki, J.K.Deng, D.T.Shi, W.E.Collins, J.D.Cole, R.Aryaeinejad, M.W.Drigert, J.O.Rasmussen, R.Donangelo, J.Gilat, S.Asztalos, I.Y.Lee, A.O.Macchiavelli, S.Y.Chu, K.E.Gregorich, M.F.Mohar, M.A.Stoyer, R.W.Lougheed, K.J.Moody, J.F.Wild, S.G.Prussin, G.M.Ter-Akopian, A.V.Daniel, Yu.Ts.Oganessian

Octupole Correlations in Neutron-Rich 145, 147La Nuclei: Coriolis-limit-coupling bands with aligned h11/2 Proton

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 145,147La deduced high-spin levels, possible J, π, B(E1)/B(E2), octupole correlations. Cranked shell model analysis. Gammasphere array.

doi: 10.1103/PhysRevC.59.1316
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1999ZH31      Phys.Rev. C60, 051304 (1999)

S.J.Zhu, J.H.Hamilton, A.V.Ramayya, E.F.Jones, J.K.Hwang, M.G.Wang, X.Q.Zhang, P.M.Gore, L.K.Peker, G.Drafta, B.R.S.Babu, W.C.Ma, G.L.Long, L.Y.Zhu, C.Y.Gan, L.M.Yang, M.Sakhaee, M.Li, J.K.Deng, T.N.Ginter, C.J.Beyer, J.Kormicki, J.D.Cole, R.Aryaeinejad, M.W.Drigert, J.O.Rasmussen, S.Asztalos, I.Y.Lee, A.O.Macchiavelli, S.Y.Chu, K.E.Gregorich, M.F.Mohar, G.M.Ter-Akopian, A.V.Daniel, Yu.Ts.Oganessian, R.Donangelo, M.A.Stoyer, R.W.Lougheed, K.J.Moody, J.F.Wild, S.G.Prussin, J.Kliman, H.C.Griffin

Octupole Correlations in Neutron-Rich 143, 145Ba and a Type of Superdeformed Band in 145Ba

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 143,145Ba deduced high-spin levels, J, π, B(E1)/B(E2), possible stable octupole deformation. Gammasphere array.

doi: 10.1103/PhysRevC.60.051304
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1998ZH12      Phys.Rev. C57, 2040 (1998); Erratum Phys.Rev. C58, 3012 (1998)

X.Q.Zhang, J.H.Hamilton, A.V.Ramayya, L.K.Peker, J.K.Hwang, E.F.Jones, J.Kormicki, C.J.Beyer, P.M.Gore, B.R.S.Babu, T.N.Ginter, S.J.Asztalos, S.Y.Chu, K.E.Gregorich, I.Y.Lee, A.O.Macchiavelli, R.W.Macleod, J.O.Rasmussen, J.Gilat, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.V.Daniel, W.C.Ma, P.G.Varmette, J.D.Cole, R.Aryaeinejad, K.Butler-Moore, Y.X.Dardenne, M.W.Drigert, M.A.Stoyer, J.F.Wild, J.A.Becker, L.A.Bernstein, R.W.Lougheed, K.J.Moody, R.Donangelo, S.G.Prussin, H.C.Griffin, S.J.Zhu

Identification of New Negative-Parity Levels in 152,154Nd

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-coin. 152,154Nd deduced high-spin levels, J, π, negative-parity bands.

doi: 10.1103/PhysRevC.57.2040
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1997HA64      Prog.Part.Nucl.Phys. 38, 273 (1997)

J.H.Hamilton, A.V.Ramayya, J.K.Hwang, J.Kormicki, B.R.S.Babu, A.Sandulescu, A.Florescu, W.Greiner, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.V.Daniel, S.J.Zhu, M.G.Wang, T.Ginter, J.K.Deng, W.C.Ma, G.S.Popeko, Q.H.Lu, E.Jones, R.Dodder, P.Gore, W.Nazarewicz, J.O.Rasmussen, S.Asztalos, I.Y.Lee, S.Y.Chu, K.E.Gregorich, A.O.Macchiavelli, M.F.Mohar, S.Prussin, M.A.Stoyer, R.W.Lougheed, K.J.Moody, J.F.Wild, L.A.Bernstein, J.A.Becker, J.D.Cole, R.Aryaeinejad, Y.X.Dardenne, M.W.Drigert, K.Butler-Moore, R.Donangelo, H.C.Griffin

New Cold and Ultra Hot Binary and Cold Ternary Spontaneous Fission Modes for 252Cf and New Band Structures with Gammasphere

RADIOACTIVITY 252Cf(SF); measured Eγ, Iγ, γγ-, (X-ray)γ-coin, prompt neutron multiplicity following binary, ternary fission; deduced fragments isotopic yields. 142,143,144,145,146,148Ba, 140Xe, 144Ce, 99,100,102Zr, 98,100Sr, 112,114,116Pd, 156,158,160Sm deduced high-spin levels, J, π, rotational bands features. 108,110,112Ru, 148,150,152Ce, 146,148,150,152,154Nd, 140Ba, 98Sr, 104Zr deduced rotational bands features. Gammasphere array.

doi: 10.1016/S0146-6410(97)00037-9
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1997HW02      Int.J.Mod.Phys. E6, 331 (1997)

J.K.Hwang, A.V.Ramayya, J.H.Hamilton, J.Kormicki, L.K.Peker, B.R.S.Babu, T.N.Ginter, G.M.Ter-Akopian, Yu.Ts.Oganessian, A.V.Daniel, W.C.Ma, P.G.Varmette, S.J.Asztalos, S.Y.Chu, K.E.Gregorich, I.Y.Lee, A.O.Macchiavelli, R.W.Macleod, J.O.Rasmussen, J.D.Cole, R.Aryaeinejad, K.Butler-Moore, Y.X.Dardenne, M.W.Drigert, M.A.Stoyer, J.F.Wild, J.A.Becker, L.A.Bernstein, R.W.Lougheed, K.J.Moody, R.Donangelo, S.G.Prussin, H.C.Griffin

Identification of the ν3/2-[521] Band in 153Nd and the γ-Transitions in 149Nd

RADIOACTIVITY 252Cf(SF); measured γγ-coin; deduced E2 transition energies in N=93 isotones, N=89 isotones Eγ. 149Nd deduced high-spin level associated transitions. 153Nd deduced high-spin levels, band structure, signature splitting related features, moment of inertia. Other data input.

doi: 10.1142/S0218301397000226
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1996BA34      Phys.Rev. C54, 568 (1996)

B.R.S.Babu, S.J.Zhu, A.V.Ramayya, J.H.Hamilton, L.K.Peker, M.G.Wang, T.N.Ginter, J.Kormicki, W.C.Ma, J.D.Cole, R.Aryaeinejad, K.Butler-Moore, Y.X.Dardenne, M.W.Drigert, G.M.Ter-Akopian, Yu.Ts.Oganessian, J.O.Rasmussen, S.Asztalos, I.Y.Lee, A.O.Macchiavelli, S.Y.Chu, K.E.Gregorich, M.F.Mohar, S.Prussin, M.A.Stoyer, R.W.Lougheed, K.J.Moody, J.F.Wild

Identification of γ Transitions in 147Ba, 149Ce, and 151,153Nd

RADIOACTIVITY 252Cf(SF); measured γγγ-, γ(X-ray)-, γγ(X-ray)-, γγ-coin. 147Ba, 151,153Nd, 149Ce deduced high-spin levels, J, π, configuration, band structure.

doi: 10.1103/PhysRevC.54.568
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1996DA16      Phys.Rev. C54, 206 (1996)

Y.X.Dardenne, R.Aryaeinejad, S.J.Asztalos, B.R.S.Babu, K.Butler-Moore, S.Y.Chu, J.D.Cole, M.W.Drigert, K.E.Gregorich, J.H.Hamilton, J.Kormicki, I.Y.Lee, R.W.Lougheed, Q.H.Lu, W.-C.Ma, M.F.Mohar, K.J.Moody, S.G.Prussin, A.V.Ramayya, J.O.Rasmussen, M.A.Stoyer, J.F.Wild

Observation of Cold Fission in 242Pu Spontaneous Fission

RADIOACTIVITY 242Pu(SF); measured γγ-coin following fission; deduced relative yields for Zr-Xe, Sr-Ba, Mo-Te isotope pairs.

doi: 10.1103/PhysRevC.54.206
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1996LA12      Phys.Rev. C54, 620 (1996)

Yu.A.Lazarev, Yu.V.Lobanov, Yu.Ts.Oganessian, V.K.Utyonkov, F.Sh.Abdullin, A.N.Polyakov, J.Rigol, I.V.Shirokovsky, Yu.S.Tsyganov, S.Iliev, V.G.Subbotin, A.M.Sukhov, G.V.Buklanov, B.N.Gikal, V.B.Kutner, A.N.Mezentsev, K.Subotic, J.F.Wild, R.W.Lougheed, K.J.Moody

α Decay of 273110: Shell closure at N = 162

NUCLEAR REACTIONS 244Pu(34S, X), E=190 MeV; measured Eα, Iα; deduced production σ for 273Ds.

RADIOACTIVITY 273Ds(α) [from 244Pu(34S, X), E=190 MeV]; measured Eα, Iα, T1/2.

doi: 10.1103/PhysRevC.54.620
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1995BU14      Phys.Rev. C52, 1339 (1995)

K.Butler-Moore, R.Aryaeinejad, J.D.Cole, Y.Dardenne, R.G.Greenwood, J.H.Hamilton, A.V.Ramayya, W.-C.Ma, B.R.S.Babu, J.O.Rasmussen, M.A.Stoyer, S.Y.Chu, K.E.Gregorich, M.Mohar, S.Asztalus, S.G.Prussin, K.J.Moody, R.W.Lougheed, J.F.Wild

Evidence of Unique-Parity Band Structure in Neutron-Rich Odd-A Ru Isotopes

RADIOACTIVITY 252Cf(SF); measured γγγ-, γγ-, γ(X-ray), (X-ray)(X-ray)-coin following fission fragment decay. 109,111Ru deduced transitions, γ-multipolarity, levels, J, π. Models comparison.

doi: 10.1103/PhysRevC.52.1339
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1995LA20      Phys.Rev.Lett. 75, 1903 (1995)

Yu.A.Lazarev, Yu.V.Lobanov, Yu.Ts.Oganessian, Yu.S.Tsyganov, V.K.Utyonkov, F.Sh.Abdullin, S.Iliev, A.N.Polyakov, J.Rigol, I.V.Shirokovsky, V.G.Subbotin, A.M.Sukhov, G.V.Buklanov, B.N.Gikal, V.B.Kutner, A.N.Mezentsev, I.M.Sedykh, D.V.Vakatov, R.W.Lougheed, J.F.Wild, K.J.Moody, E.K.Hulet

New Nuclide 267108 Produced by the 238U + 34S Reaction

NUCLEAR REACTIONS, ICPND 238U(34S, X)267Hs, E=186 MeV; measured Eα, Iα; deduced residual production σ.

RADIOACTIVITY 267Hs(α) [from 238U(34S, X), E=186 MeV]; measured Eα, Iα, T1/2.

doi: 10.1103/PhysRevLett.75.1903
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1995SC53      Radiochim.Acta 68, 7 (1995)

M.Schadel, E.Jager, W.Bruchle, K.Summerer, E.K.Hulet, J.F.Wild, R.W.Lougheed, R.J.Dougan, K.J.Moody

Radiochemical Search for Neutron-Rich Isotopes of Nielsbohrium in the 16O + 254Es Reaction

NUCLEAR REACTIONS, ICPND 254Es(16O, xn)E=113, 116 MeV; measured α-spectra following residual decay; deduced production σ for 265,266,267107 vs assumed T1/2. On-line gas chromatography.


1995ZH34      Phys.Lett. 357B, 273 (1995)

S.J.Zhu, Q.H.Lu, J.H.Hamilton, A.V.Ramayya, L.K.Peker, M.G.Wang, W.C.Ma, B.R.S.Babu, T.N.Ginter, J.Kormicki, D.Shi, J.K.Deng, W.Nazarewicz, J.O.Rasmussen, M.A.Stoyer, S.Y.Chu, K.E.Gregorich, M.F.Mohar, S.Asztalos, S.G.Prussin, J.D.Cole, R.Aryaeinejad, Y.K.Dardenne, M.Drigert, K.J.Moody, R.W.Lougheed, J.F.Wild, N.R.Johnson, I.Y.Lee, F.K.McGowan, G.M.Ter-Akopian, Yu.Ts.Oganessian

Octupole Deformation in 142,143Ba and 144Ce: New band structures in neutron-rich Ba-isotopes

RADIOACTIVITY 252Cf(SF); 242Pu(SF); measured γγ-, γγγ-coin following fission fragment decay. 142,143,144,145,146,147Ba, 144Ce deduced high-spin levels, J, π, band structure, shape features, B(λ) in some cases.

doi: 10.1016/0370-2693(95)00900-6
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1994LA22      Phys.Rev.Lett. 73, 624 (1994)

Yu.A.Lazarev, Yu.V.Lobanov, Yu.Ts.Oganessian, V.K.Utyonkov, F.Sh.Abdullin, G.V.Buklanov, B.N.Gikal, S.Iliev, A.N.Mezentsev, A.N.Polyakov, I.M.Sedykh, I.V.Shirokovsky, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.E.Zhuchko, R.W.Lougheed, K.J.Moody, J.F.Wild, E.K.Hulet, J.H.McQuaid

Discovery of Enhanced Nuclear Stability Near the Deformed Shells N = 162 and Z = 108

NUCLEAR REACTIONS 248Cm(22Ne, X), E=116, 121 MeV; measured Eα, Iα; deduced evidence for 265Sg, 266Sg.

RADIOACTIVITY 265Sg, 266Sg(α); measured Eα, Iα; deduced T1/2, SF-decay upper limits. 262Rf [from 266Sg(α-decay)]; measured T1/2.

doi: 10.1103/PhysRevLett.73.624
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1994LO27      J.Alloys and Compounds 213/214, 61 (1994)

R.W.Lougheed, K.J.Moody, J.FD.Wild, E.K.Hulet, J.H.McQuaid, Yu.A.Lazarev, Yu.V.Lobanov, Yu.Ts.Oganessian, V.K.Utyonkov, F.Sh.Abdullin, G.V.Buklanov, B.N.Gikal, S.Iliev, A.N.Mezentsev, A.N.Polyakov, I.M.Sedykh, I.V.Shirokovsky, V.G.Subbotin, A.M.Sukhov, Yu.S.Tsyganov, V.E.Zhuchko

Observation of enhanced nuclear stability near the 162 neutron shell

RADIOACTIVITY 265,266Sg(α) [from 248Cm(22Ne, xn)]; measured Eα, T1/2. 262Rf(SF) [from 266Sg decay]; measured T1/2. Comparison with model predictions.

doi: 10.1016/0925-8388(94)90881-8
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1994WI17      J.Alloys and Compounds 213/214, 86 (1994)

J.F.Wild, E.K.Hulet, R.W.Lougheed, K.J.Moody, B.B.Bandong, R.J.Dougan, A.Veeck

Spontaneous fission properties of 252, 254No and 256, 258[104] and the disappearance of the outer fission barrier

RADIOACTIVITY 252,254No(SF) [from 244,246Cm(12C, 4n)]; 256,258Rf(SF) [from 244Cm(16O, 4n) and 249Cf(12C, 3n)]; measured fission fragment kinetic energy and mass distributions; deduced fission barrier features.

doi: 10.1016/0925-8388(94)90885-0
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1993MO18      Nucl.Phys. A563, 21 (1993)

K.J.Moody, R.W.Lougheed, J.F.Wild, R.J.Dougan, E.K.Hulet, R.W.Hoff, C.M.Henderson, R.J.Dupzyk, R.L.Hahn, K.Summerer, G.D.O'Kelley, G.R.Bethune

Decay Properties of Heavy Mendelevium Isotopes

NUCLEAR REACTIONS, ICPND 254Es(18O, X)256Md/255Md/257Md/258Md/258mMd/259Md/260Md, E=105 MeV; 254Es(22Ne, X)256Md/255Md/257Md/258Md/258mMd/259Md/260Md, E=126 MeV; measured Eα, Iα; deduced residual nuclei production σ.

RADIOACTIVITY 256Md(EC), (α); 257Md(EC), (α), (SF); 258Md(α), (SF), (EC), (β-); 258mMd(EC), (α), (SF), (β-); 259Md(SF), (α); measured Eα, Iα, γ-spectra, SF-decay; deduced T1/2, branching ratio. 256,257,258Md deduced mass excess. 259Md deduced SF-decay hindrance factor. 252,253,254Es deduced levels, J, π, γ transitions.

doi: 10.1016/0375-9474(93)90010-U
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1990MO01      Phys.Rev. C41, 152 (1990)

K.J.Moody, R.W.Lougheed, R.J.Dougan, E.K.Hulet, J.F.Wild, K.Summerer, R.L.Hahn, J.van Aarle, G.R.Bethune

Actinide Cross Sections from the Reaction of 13C with 254gEs

NUCLEAR REACTIONS 254Es(13C, X), E=72 MeV; measured production σ for 252-256Es, 253-257Fm, 255-260Md, 256,257,259No, 259-262Lr, 261104, 262105; deduced reaction σ, production mechanism.

doi: 10.1103/PhysRevC.41.152
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1990WI01      Phys.Rev. C41, 640 (1990)

J.F.Wild, J.van Aarle, W.Westmeier, R.W.Lougheed, E.K.Hulet, K.J.Moody, R.J.Dougan, E.-A.Koop, R.E.Glaser, R.Brandt, P.Patzelt

Prompt Neutron Emission from the Spontaneous Fission of 260Md

NUCLEAR REACTIONS 254Es(22Ne, X), E=126 MeV; measured (neutron)(fragment)-coin; deduced 260Md production evidence.

RADIOACTIVITY 260Md(SF) [from 254Es(22Ne, X), E=126 MeV]; measured fission neutron multiplicity distribution, emission probabilities.

doi: 10.1103/PhysRevC.41.640
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1989HU09      Phys.Rev. C40, 770 (1989)

E.K.Hulet, J.F.Wild, R.J.Dougan, R.W.Lougheed, J.H.Landrum, A.D.Dougan, P.A.Baisden, C.M.Henderson, R.J.Dupzyk, R.L.Hahn, M.Schadel, K.Summerer, G.R.Bethune

Spontaneous Fission Properties of 258Fm, 259Md, 260Md, 258No, and 260[104]: Bimodal fission

RADIOACTIVITY 258Fm, 258No, 259,260Md, 260Rf(SF); measured fission fragment mass, kinetic energy distributions; deduced fission features.

doi: 10.1103/PhysRevC.40.770
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1986HU01      Phys.Rev.Lett. 56, 313 (1986)

E.K.Hulet, J.F.Wild, R.J.Dougan, R.W.Lougheed, J.H.Landrum, A.D.Dougan, M.Schadel, R.L.Hahn, P.A.Baisden, C.M.Henderson, R.J.Dupzyk, K.Summerer, G.R.Bethune

Bimodal Symmetric Fission Observed in the Heaviest Elements

RADIOACTIVITY 258Fm(SF); 258m,259,260Md(SF) [from 254Es(18O, X), E=105 MeV; 254Es(22Ne, X), E=16 MeV]; 258No(SF) [from 248Cm(13C, X), E=81 MeV]; 260Rf(SF) [from 249Bk(15N, X), E=81 MeV]; measured fission fragment mass, kinetic energy partitioning; deduced bimodal symmetric fission evidence.

doi: 10.1103/PhysRevLett.56.313
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1986HU05      Phys.Rev. C34, 1394 (1986)

E.K.Hulet, R.W.Lougheed, J.F.Wild, R.J.Dougan, K.J.Moody, R.L.Hahn, C.M.Henderson, R.J.Dupzyk, G.R.Bethune

Z and A Identification of 370-μs 258Fm

RADIOACTIVITY 258mFm(SF) [from 258mMd(EC-decay)]; measured fission (fragment)(X-ray) time correlation; deduced T1/2, charge, mass. Ge and Si-Au detectors.

doi: 10.1103/PhysRevC.34.1394
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1986LO16      J.Less-Common Met. 122, 461 (1986)

R.W.Lougheed, E.K.Hulet, R.J.Dougan, J.F.Wild, R.J.Dupzyk, C.M.Henderson, K.J.Moody, R.L.Hahn, K.Summerer, G.Bethune

The Discovery of 260Md and the Decay Properties of 258Fm, 258m,258gMd and 259Md

NUCLEAR REACTIONS 254Es(18O, xnyp), E=105 MeV; 254Es(22Ne, xnyp), E=126 MeV; measured Fm, Md isotope production σ.

RADIOACTIVITY 260Md(SF) [from 254Es(18O, xnyp), E=105 MeV; 254Es(22Ne, xnyp), E=126 MeV]; measured T1/2. 258mMd(EC), 258,259Md, 258Fm(SF) [from 254Es(18O, xnyp), E=105 MeV; 254Es(22Ne, xnyp), E=126 MeV]; measured decay characteristics, T1/2.

doi: 10.1016/0022-5088(86)90442-X
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1986SC10      Phys.Rev. C33, 1547 (1986)

M.Schadel, W.Bruchle, M.Brugger, H.Gaggeler, K.J.Moody, D.Schardt, K.Summerer, E.K.Hulet, A.D.Dougan, R.J.Dougan, J.H.Landrum, R.W.Lougheed, J.F.Wild, G.D.O'Kelley

Transfer Cross Sections from Reactions with 254Es as a Target

NUCLEAR REACTIONS, ICPND 254Es(16O, X), E=98 MeV; measured production σ for No, Lr isotopes. 254Es(18O, X)260Md/261Md/260No/261No/262No/261Lr/262Lr/263Lr, E=98 MeV; 254Es(22Ne, X)260Md/261Md/260No/261No/262No/261Lr/262Lr/263Lr, E=127 MeV; measured residual production σ. Activation technique.

doi: 10.1103/PhysRevC.33.1547
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetA0358.


1985LO13      Phys.Rev. C32, 1760 (1985)

R.W.Lougheed, J.H.Landrum, E.K.Hulet, J.F.Wild, R.J.Dougan, A.D.Dougan, H.Gaggeler, M.Schadel, K.J.Moody, K.E.Gregorich, G.T.Seaborg

Search for Superheavy Elements using the 48Ca + 254gEs Reaction

NUCLEAR REACTIONS 254Es(48Ca, X)211At/209At/212Pb, E=240, 249 MeV; measured residuals, superheavy production σ. Aqueous, gas phase separation technique.

doi: 10.1103/PhysRevC.32.1760
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2550.


1985WI10      Phys.Rev. C32, 488 (1985)

J.F.Wild, P.A.Baisden, R.J.Dougan, E.K.Hulet, R.W.Lougheed, J.H.Landrum

Light-Charged-Particle Emission in the Spontaneous Fission of 250Cf, 256Fm, and 257Fm

RADIOACTIVITY 250Cf, 256Fm, 257Fm(SF); measured σ(Eα) following fission; deduced α-, t-, p-, total light particle emission probabilities.

doi: 10.1103/PhysRevC.32.488
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset12814.


1983ME08      Phys.Rev. C27, 2217 (1983)

R.A.Meyer, J.F.Wild, K.Eskola, M.E.Leino, S.Vaisala, K.Forssten, U.Kaup, A.Gelberg

Collective Excitations of 82Kr Observed by In-Beam and Decay Spectroscopy and Their Characterization by the Interacting Boson Model

RADIOACTIVITY 82,82mBr(β-); 82,82mRb(β+), (EC); measured Eγ, Iγ, γγ-coin. 82Kr deduced levels, J, π.

NUCLEAR REACTIONS 80Se(α, 2nγ), E=16-21.3 MeV; measured Eγ, Iγ, γγ-coin, γ(θ). 82Kr deduced levels, J, π, γ-multipolarity, δ, γ-branching, band structure configuration. Interacting boson model.

doi: 10.1103/PhysRevC.27.2217
Citations: PlumX Metrics


1982WI08      Phys.Rev. C26, 1531 (1982)

J.F.Wild, E.K.Hulet, R.W.Lougheed, P.A.Baisden, J.H.Landrum, R.J.Dougan, M.G.Mustafa

Unusually Low Fragment Energies in the Symmetric Fission of 259Md

RADIOACTIVITY 259No(EC), (α) [from 248Cm(18O, 3nα)]; measured α-decay T1/2. 259Md(SF) [from 259No(EC-decay)]; measured T1/2, (fragment)(fragment)-coin; deduced SF-decay upper limit, fragment mass, total kinetic energy distributions.

doi: 10.1103/PhysRevC.26.1531
Citations: PlumX Metrics


1981LO15      J.Inorg.Nucl.Chem. 43, 2239 (1981)

R.W.Lougheed, E.K.Hulet, J.F.Wild, B.J.Qualheim, J.E.Evans, R.J.Dupzyk

Two New Isotopes with N = 157: 256Es and 255Cf

RADIOACTIVITY 256Es, 255Cf [from neutron irradiation of 255Es, 254Cf]; measured β-decay T1/2.

NUCLEAR REACTIONS 255Es, 254Cf(n, γ), E=reactor; measured σ(effective); deduced evidence for 256Es, 255Cf. Enriched targets.

doi: 10.1016/0022-1902(81)80239-4
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset12723.


1981NI01      Nucl.Phys. A352, 138 (1981)

J.M.Nitschke, M.Fowler, A.Ghiorso, R.E.Leber, M.E.Leino, M.J.Nurmia, L.P.Somerville, K.E.Williams, E.K.Hulet, J.H.Landrum, R.W.Lougheed, J.F.Wild, C.E.Bemis, Jr., R.J.Silva, P.Eskola

Search for an 80 ms Spontaneous Fission Activity in Bombardments of 249Bk with 15N

NUCLEAR REACTIONS, Fission 249Bk(15N, X), E=78, 82, 86, 88, 100 MeV; measured σ(E), spontaneous fission T1/2. 260Rf deduced no evidence for 80 ms spontaneous fission decay.

doi: 10.1016/0375-9474(81)90564-9
Citations: PlumX Metrics


1980HO04      Phys.Rev. C21, 972 (1980)

D.C.Hoffman, J.B.Wilhelmy, J.Weber, W.R.Daniels, E.K.Hulet, R.W.Lougheed, J.H.Landrum, J.F.Wild, R.J.Dupzyk

12.3-min 256Cf and 43-min 258Md and Systematics of the Spontaneous Fission Properties of Heavy Nuclides

RADIOACTIVITY 256Cf(SF) [from 254Cf(t, p), E=16 MeV]; measured T1/2, (fragment)(fragment)-coin; deduced total kinetic energy, mass distribution. 258Md[from 255Es(α, n), E=26.3 MeV]; measured T1/2. 258Fm (SF) [from ϵ decay of 258Md]; measured (fragment)(fragment)-coin; deduced total kinetic energy, mass distribution.

doi: 10.1103/PhysRevC.21.972
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset10923.


1980HU03      Phys.Rev. C21, 966 (1980)

E.K.Hulet, R.W.Lougheed, J.H.Landrum, J.F.Wild, D.C.Hoffman, J.Weber, J.B.Wilhelmy

Spontaneous Fission of 259Fm

NUCLEAR REACTIONS 257Fm(t, p), E=16 MeV; measured σ, (fragment)(fragment)-coin. 259Fm deduced SF isomer, T1/2, fragment mass distribution.

doi: 10.1103/PhysRevC.21.966
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset10924.


1978LO13      J.Inorg.Nucl.Chem. 40, 1865 (1978)

R.W.Lougheed, J.F.Wild, E.K.Hulet, R.W.Hoff, J.H.Landrum

A New Isotope of Curium and its Decay Properties: 251Cm

RADIOACTIVITY 251Cm [from 250Cm(n, γ)]; measured T1/2, Eγ, Iγ, Qβ-, Eβ. 251Bk deduced levels, J, K, π.

doi: 10.1016/0022-1902(78)80244-9
Citations: PlumX Metrics


1978WI12      S.Afr.J.Phys. 1, 116 (1978)

J.B.Wilhelmy, H.C.Britt, D.C.Hoffman, W.R.Daniels, E.Cheifetz, A.Gavron, J.Weber, E.K.Hulet, J.H.Landrum, R.W.Lougheed, J.F.Wild

Fission Properties of the Heavy Actinides

NUCLEAR REACTIONS 254Es(d, pF), (t, pF), E not given; measured fission barriers.

RADIOACTIVITY, Fission 256Cf(SF) [from 254Cf(t, p)]; 258Fm(SF) [from 255Es(α, n)258Md+electron capture]; 259Fm(SF) [from 257Fm(t, p)]; measured fragment mass distribution, average kinetic energy release.


1977HU04      Phys.Rev.Lett. 39, 385 (1977)

E.K.Hulet, R.W.Lougheed, J.F.Wild, J.H.Landrum, P.C.Stevenson, A.Ghiorso, J.M.Nitschke, R.J.Otto, D.J.Morrissey, P.A.Baisden, B.F.Gavin, D.Lee, R.J.Silva, M.M.Fowler, G.T.Seaborg

Search for Superheavy Elements in the Bombardment of 248Cm with 48Ca

NUCLEAR REACTIONS 248Cm(48Ca, X), E=267 MeV; measured σ for formation of superheavy elements.

doi: 10.1103/PhysRevLett.39.385
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 datasetC2537.


1976BO13      J.Inorg.Nucl.Chem. 38, 1291 (1976)

D.D.Bode, J.F.Wild, E.K.Hulet

Mossbauer Studies of Americium Compounds

NUCLEAR MOMENTS 243Am; measured isomer shift, quadrupole moment ratio. Mossbauer studies in Am compounds.

doi: 10.1016/0022-1902(76)80138-8
Citations: PlumX Metrics


1973HU01      Radiochim.Radioanal.Lett. 13, 217 (1973)

E.K.Hulet, J.F.Wild

Decay of Californium-248

RADIOACTIVITY 248Cf; measured T1/2, α/SF-ratio, xα-coin.


1973WI03      J.Inorg.Nucl.Chem. 35, 1063 (1973)

J.F.Wild, E.K.Hulet, R.W.Lougheed

Some Nuclear Properties of Fermium-257

RADIOACTIVITY 257Fm; measured T1/2, α/SF ratio.

doi: 10.1016/0022-1902(73)80176-9
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset10341.


1971HU03      Phys.Rev. Lett. 26, 523 (1971)

E.K.Hulet, J.F.Wild, R.W.Lougheed, J.E.Evans, B.J.Qualheim, M.Nurmia, A.Ghiorso

Spontaneous-Fission Half-Life of 258Fm and Nuclear Instability

RADIOACTIVITY, Fission 258Fm(SF)[from 257Fm(d, p)]; measured T1/2.

doi: 10.1103/PhysRevLett.26.523
Citations: PlumX Metrics


1970HU17      UCRL-72858 (1970)

E.K.Hulet, J.F.Wild, R.W.Lougheed, J.E.Evans, B.J.Qualheim, M.Nurmia, A.Ghiorso

Spontaneous-Fission Half-Life of 258Fm and Nuclear Instability


1967WI13      Nucl.Phys. A103, 601(1967)

J.F.Wild, W.B.Walters

Decay of 9.6-d 125Sn to Levels of 125Sb

RADIOACTIVITY 125Sn [from 124Sn(d, p)]; measured Iβ, Eγ, Iγ, γγ. 125Sb deduced levels, J, π. Enriched target, Ge(Li) detector.

doi: 10.1016/0375-9474(67)90926-8
Citations: PlumX Metrics


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