NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = G.Wirth Found 50 matches. 2006EI01 Radiochim.Acta 94, 181 (2006) R.Eichler, W.Bruchle, R.Buda, S.Burger, R.Dressler, Ch.E.Dullmann, J.Dvorak, K.Eberhardt, B.Eichler, C.M.Folden III, H.W.Gaggeler, K.E.Gregorich, F.Haenssler, D.C.Hoffman, H.Hummrich, E.Jager, J.V.Kratz, B.Kuczewski, D.Liebe, D.Nayak, H.Nitsche, D.Piguet, Z.Qin, U.Rieth, M.Schadel, B.Schausten, E.Schimpf, A.Semchenkov, S.Soverna, R.Sudowe, N.Trautmann, P.Thorle, A.Turler, B.Wierczinski, N.Wiehl, P.A.Wilk, G.Wirth, A.B.Yakushev, A.von Zweidorf Attempts to chemically investigate element 112 NUCLEAR REACTIONS 238U(48Ca, X), E=231, 235 MeV; measured delayed fission, Eα, (fission)α-coin; deduced no evidence for 283Cn. Thermochromatography.
doi: 10.1524/ract.2006.94.4.181
2004GA18 Nucl.Phys. A734, 208 (2004) H.W.Gaggeler, W.Bruchle, Ch.E.Dullmann, R.Dressler, K.Eberhardt, B.Eichler, R.Eichler, C.M.Folden, T.N.Ginter, F.Glaus, K.E.Gregorich, F.Haenssler, D.C.Hoffman, E.Jager, D.T.Jost, U.W.Kirbach, J.V.Kratz, H.Nitsche, J.B.Patin, V.Pershina, D.Piguet, Z.Qin, U.Rieth, M.Schadel, E.Schimpf, B.Schausten, S.Soverna, R.Sudowe, P.Thorle, N.Trautmann, A.Turler, A.Vahle, P.A.Wilk, G.Wirth, A.B.Yakushev, A.von Zweidorf Chemical and nuclear studies of hassium and element 112 NUCLEAR REACTIONS 248Cm(26Mg, 4n), (26Mg, 5n), E=145 MeV; 238U(48Ca, 3n), E=239 MeV; measured yields. Chemical properties discussed.
doi: 10.1016/j.nuclphysa.2004.01.036
2004VO24 Radiochim.Acta 92, 855 (2004) A.von Zweidorf, R.Angert, W.Bruchle, S.Burger, K.Eberhardt, R.Eichler, H.Hummrich, E.Jager, H.-O.Kling, J.V.Kratz, B.Kuczewski, G.Langrock, M.Mendel, U.Rieth, M.Schadel, B.Schausten, E.Schimpf, P.Thorle, N.Trautmann, K.Tsukada, N.Wiehl, G.Wirth Evidence for the formation of sodium hassate(VIII) NUCLEAR REACTIONS 248Cm(26Mg, xn), E=144-149 MeV; measured delayed αα-coin; deduced evidence for 269,270Hs. Radiochemical analysis. RADIOACTIVITY 269,270Hs, 265,266Sg, 257No(α); 261,262Rf(SF) [from 248Cm(26Mg, xn) and subsequent decay]; measured Eα, T1/2.
doi: 10.1524/ract.92.12.855.55112
2003DU27 Czech.J.Phys. (Supplement) 53, A291 (2003) Ch.E.Dullmann, R.Dressler, B.Eichler, H.W.Gaggeler, F.Glaus, D.T.Jost, D.Piguet, S.Soverna, A.Turler, W.Bruchle, R.Eichler, E.Jager, V.Pershina, M.Schadel, B.Schausten, E.Schimpf, H.-J.Schott, G.Wirth, K.Eberhardt, P.Thorle, N.Trautmann, T.N.Ginter, K.E.Gregorich, D.C.Hoffman, U.W.Kirbach, D.M.Lee, H.Nitsche, J.B.Patin, R.Sudowe, P.M.Zielinski, S.N.Timokhin, A.B.Yakushev, A.Vahle, Z.Qin First chemical investigation of hassium (Hs, Z=108) RADIOACTIVITY 269,270Hs(α); measured Eα, Iα.
doi: 10.1007/s10582-003-0037-4
2003TU05 Eur.Phys.J. A 17, 505 (2003) A.Turler, Ch.E.Dullmann, H.W.Gaggeler, U.W.Kirbach, A.B.Yakushev, M.Schadel, W.Bruchle, R.Dressler, K.Eberhardt, B.Eichler, R.Eichler, T.N.Ginter, F.Glaus, K.E.Gregorich, D.C.Hoffman, E.Jager, D.T.Jost, D.M.Lee, H.Nitsche, J.B.Patin, V.Pershina, D.Piguet, Z.Qin, B.Schausten, E.Schimpf, H.-J.Schott, S.Soverna, R.Sudowe, P.Thorle, S.N.Timokhin, N.Trautmann, A.Vahle, G.Wirth, P.M.Zielinski On the decay properties of 269Hs and indications for the new nuclide 270Hs NUCLEAR REACTIONS 248Cm(26Mg, xn), E=143.7-146.8 MeV; measured residual nucleus decay; deduced evidence for 269,270Hs. Chemical separation. RADIOACTIVITY 269,270Hs, 265,266Sg, 261Rf, 257No(α) [from 248Cm(26Mg, xn) and subsequent decay]; measured Eα, T1/2. 261,262Rf(SF); measured fission fragment energies.
doi: 10.1140/epja/i2002-10163-0
2002DU21 Nature(London) 418, 859 (2002) Ch.E.Dullmann, W.Bruchle, R.Dressler, K.Eberhardt, B.Eichler, R.Eichler, H.W.Gaggeler, T.N.Ginter, F.Glaus, K.E.Gregorich, D.C.Hoffman, E.Jager, D.T.Jost, U.W.Kirbach, D.M.Lee, H.Nitsche, J.B.Patin, V.Pershina, D.Piguet, Z.Qin, M.Schadel, B.Schausten, E.Schimpf, H.-J.Schott, S.Soverna, R.Sudowe, P.Thorle, S.N.Timokhin, N.Trautmann, A.Turler, A.Vahle, G.Wirth, A.B.Yakushev, P.M.Zielinski Chemical investigation of hassium (element 108) RADIOACTIVITY 269,270Hs, 265,266Sg, 261Rf(α) [from 248Cm(26Mg, xn) and subsequent decay]; measured Eα. Chemical properties of hassium discussed.
doi: 10.1038/nature00980
1998SC50 Radiochim.Acta 83, 163 (1998) M.Schadel, W.Bruchle, E.Jager, B.Schausten, G.Wirth, W.Paulus, R.Gunther, K.Eberhardt, J.V.Kratz, A.Seibert, E.Strub, P.Thorle, N.Trautmann, A.Waldek, S.Zauner, D.Schumann, U.Kirbach, B.Kubica, R.Misiak, Y.Nagame, K.E.Gregorich Aqueous Chemistry of Seaborgium (Z=106)
1997FU04 Z.Phys. A357, 303 (1997) F.Funke, G.Wirth, J.V.Kratz, W.Bruchle, W.Fan, K.Summerer Quasielastic Transfer Reactions in 238U + 197Au and 197Au + 197Au Collisions Near the Coulomb Barrier NUCLEAR REACTIONS 197Au(238U, X)198Au/199Au/198mAu/196Au/196mAu, E=5.3-6.56 MeV/nucleon; 197Au(197Au, X)198Au/198mAu/196Au/196mAu, E=4.8-5.6 MeV/nucleon; measured residual production associated σ(θ); deduced missing transfer σ, ground state Q-value correlations for central collisions.
doi: 10.1007/s002180050247
1997SC48 Radiochim.Acta 77, 149 (1997) M.Schadel, W.Bruchle, B.Schausten, E.Schimpf, E.Jager, G.Wirth, R.Gunther, J.V.Kratz, W.Paulus, A.Seibert, P.Thorle, N.Trautmann, S.Zauner, D.Schumann, M.Andrassy, R.Misiak, K.E.Gregorich, D.C.Hoffman, D.M.Lee, E.R.Sylwester, Y.Nagame, Y.Oura First Aqueous Chemistry with Seaborgium (Element 106) RADIOACTIVITY 265,266Sg(α), (SF) [from 248Cm(22Ne, xn)]; measured T1/2. Chemical separation.
1997SC49 Nature(London) 388, 55 (1997) M.Schadel, W.Bruchle, R.Dressler, B.Eichler, H.W.Gaggeler, R.Gunther, K.E.Gregorich, D.C.Hoffman, S.Hubener, D.T.Jost, J.V.Kratz, W.Paulus, D.Schumann, S.Timokhin, N.Trautmann, A.Turler, G.Wirth, A.Yakushev Chemical properties of element 106 (seaborgium) RADIOACTIVITY 265,266Sg(α) [from 248Cm(22Ne, X)265Sg/266Sg]; measured Eα, Iα, chemical properties.
1996BL22 Z.Phys. A356, 49 (1996) Th.Blaich, J.V.Kratz, R.Schmoll, K.Summerer, G.Wirth Dynamical Intermediate-Mass Fragment Production in 197Au + 197Au Collisions at Energies ≤ 15 MeV/u NUCLEAR REACTIONS 197Au(197Au, X), E=9-15 MeV/nucleon; measured intermediate mass fragment production data; analyzed fission products mass distribution; deduced two-step mechanism role in former case. Catcher foil experiments, foil stacks, off-line assay of X-ray, γ-ray spectroscopy.
doi: 10.1007/s002180050147
1994AU02 Nucl.Phys. A569, 157c (1994) T.Aumann, W.Bruchle, M.Fauerbach, J.C.Hill, J.V.Kratz, M.Schadel, E.Stiel, K.Summerer, G.Wirth Evidence for Two-Phonon Giant-Dipole Excitation from Inclusive Measurements of 197Au Target Dissociation NUCLEAR REACTIONS 197Au(20Ne, X), E=1.7 GeV/nucleon; 197Au(86Kr, X), (197Au, X), (209Bi, X), E=1 GeV/nucleon; measured target electromagnetic dissociation σ. Activation technique, model comparison.
doi: 10.1016/0375-9474(94)90106-6
1994PO24 Z.Phys. A350, 221 (1994) S.Polikanov, W.Bruchle, H.Folger, E.Jager, T.Krogulski, M.Schadel, E.Schimpf, G.Wirth, T.Aumann, J.V.Kratz, E.Stiel, N.Trautmann Electromagnetic and Nuclear Fission of 238U in the Reaction of 100, 500, and 1000A.MeV 208Pb with 238U NUCLEAR REACTIONS, ICPND 238U(208Pb, F), (238U, F), E=100-1000 MeV/nucleon; measured electromagnetic, nuclear fission fragment velocity distributions; deduced fission σ(E) for the two processes.
doi: 10.1007/BF01289586
1992RE06 Z.Phys. A342, 411 (1992) W.Reisdorf, J.V.Kratz, R.Bellwied, W.Bruchle, H.Keller, K.Lutzenkirchen, M.Schadel, K.Summerer, G.Wirth Competition between Binary Reactions and Fusion in Heavy-Ion Collisions at the Coulomb Barrier NUCLEAR REACTIONS 76Ge(86Kr, X), E=3.22 MeV/nucleon; 104Ru(86Kr, X), E=3.84, 3.64 MeV/nucleon; 130Te(84Kr, X), E=3.96 MeV/nucleon; measured residual production σ for X=Zn to Ce isotopes, mass, charge distributions; deduced reseparation channels main components.
doi: 10.1007/BF01294952
1991FU07 Z.Phys. A340, 303 (1991) F.Funke, J.V.Kratz, N.Trautmann, N.Wiehl, G.Wirth, W.Bruchle, F.Wo, K.Summerer Cross Sections for Nuclear Reactions in Collisions of 238U + 238U and 238U + 197Au Near and Below the Coulomb Barrier NUCLEAR REACTIONS 197Au, 238U(238U, X), E=5.38-6.56 MeV/nucleon; measured transfer reaction σ, X=237,240U, 238,239Np, 234,232Pa, 227,228Th, 225,226Ac, 223,224,225Ra; deduced no evidence for long-lived di-nuclear systems.
doi: 10.1007/BF01294679
1991WI07 Phys.Lett. 253B, 28 (1991) G.Wirth, F.Funke, W.Bruchle, F.Wo, J.V.Kratz, K.Summerer, N.Trautmann One-Neutron Transfer in 238U + 197Au Collisions NUCLEAR REACTIONS 197Au(238U, X), E=5.36 MeV/nucleon; measured σ(θ) for X=239,237U; deduced one-neutron transfer probabilities.
doi: 10.1016/0370-2693(91)91358-3
1990SC11 Z.Phys. A335, 421 (1990) U.W.Scherer, W.Bruchle, M.Brugger, C.Frink, H.Gaggeler, G.Herrmann, J.V.Kratz, K.J.Moody, M.Schadel, K.Summerer, N.Trautmann, G.Wirth Reactions of 40Ar with 233U, 235U, and 238U at the Barrier NUCLEAR REACTIONS, ICPND 233,235,238U(40Ar, X), E ≈ 5.3 MeV/nucleon; measured residual yields for Z=86-98. 235U(40Ar, X), E ≈ 5.3 MeV/nucleon; measured Eα, Iα; deduced tentative decay chains for 233,235,238U(40Ar, xn) residues. RADIOACTIVITY 270Ds, 269Ds, 272Ds, 271Ds, 275Ds, 274Ds; analyzed calculated Eα, α-decay T1/2; deduced tentative decay chains.
1988WI11 Z.Phys. A330, 87 (1988) G.Wirth, W.Bruchle, F.Wo, K.Summerer, F.Funke, J.V.Kratz, N.Trautmann, V.E.Oberacker Fission in 238U + 238U Collisions Below the Coulomb Barrier NUCLEAR REACTIONS 238U(238U, F), E=5.4-6.2 MeV/nucleon; measured fission σ(E); 239U(238U, X), E=5.05-6.07 MeV/nucleon; calculated one-nucleon transfer σ(θ); deduced reaction mechanism.
1987HI12 Nucl.Instrum.Methods Phys.Res. A260, 407 (1987) N.Hildebrand, C.Frink, N.Greulich, U.Hickmann, J.V.Kratz, N.Trautmann, G.Herrmann, M.Brugger, H.Gaggeler, K.Summerer, G.Wirth A Cryosystem for the Detection of Alpha and Spontaneous-Fission Activities in Volatile Species NUCLEAR REACTIONS 248Cm(48Ca, X)210Rn/211Rn/212Rn/219Rn/220Rn/221Rn/222Rn, E not given; 238U(238U, X)210Rn/211Rn/212Rn/219Rn/220Rn/221Rn/222Rn, E=6.5, 7.45 MeV/nucleon; measured residual production σ vs mass.
doi: 10.1016/0168-9002(87)90108-2
1987KE01 Z.Phys. A326, 313 (1987) H.Keller, K.Lutzenkirchen, J.V.Kratz, G.Wirth, W.Bruchle, K.Summerer Evidence for Quasi-Fission in 40Ar + 208Pb Collisions near the Coulomb-Barrier NUCLEAR REACTIONS 208Pb(40Ar, X), E=4.75, 5.22 MeV/nucleon; measured fragment σ(θ). Enriched target. Extra push model.
1987KE06 Z.Phys. A328, 255 (1987) H.Keller, R.Bellwied, K.Lutzenkirchen, J.V.Kratz, W.Bruchle, H.Gaeggeler, K.J.Moody, M.Schadel, G.Wirth Unusual Excitation-Energy Division in Quasi-Fission Reactions between 50Ti, 54Cr and 58Fe with 207,208Pb at the Barrier NUCLEAR REACTIONS 207Pb(50Ti, X), (50Ti, F), E=4.85 MeV/nucleon; 208Pb(54Cr, X), (54Cr, F), E=4.9 MeV/nucleon; 208Pb(58Fe, X), (58Fe, F), E=5.02 MeV/nucleon; 209Bi(58Fe, X), (58Fe, F), E=5.15 MeV/nucleon; measured fragment mass, charge distributions, σ(Z, A), fission product γ-decay; deduced fission σ vs fragment Z.
1986GA06 Phys.Rev. C33, 1983 (1986) H.Gaggeler, W.Bruchle, M.Brugger, M.Schadel, K.Summerer, G.Wirth, J.V.Kratz, M.Lerch, Th.Blaich, G.Herrmann, N.Hildebrand, N.Trautmann, D.Lee, K.J.Moody, K.E.Gregorich, R.B.Welch, G.T.Seaborg, D.C.Hoffman, W.R.Daniels, M.M.Fowler, H.R.von Gunten Production of Cold Target-Like Fragments in the Reaction of 48Ca + 248Cm NUCLEAR REACTIONS 248Cm(Ca, X)210Rn/211Rn/212Rn/219Rn/220Rn/221Rn/222Rn/221Ra/222Ra/223Ra/223Ac/224Ac/225Ac/226Ac/225Th/226Th/227Th/228Th/230U/237U/236Pu/238Pu/243Pu/245Pu/246Pu, E=248-263 MeV; measured residuals yields, σ vs mass; deduced production mechanism.
doi: 10.1103/PhysRevC.33.1983
1986KR02 Phys.Rev. C33, 504 (1986) J.V.Kratz, W.Bruchle, H.Folger, H.Gaggeler, M.Schadel, K.Summerer, G.Wirth, N.Greulich, G.Herrmann, U.Hickmann, P.Peuser, N.Trautmann, E.K.Hulet, R.W.Lougheed, J.M.Nitschke, R.L.Ferguson, R.L.Hahn Search for Superheavy Elements in Damped Collisions between 238U and 248Cm NUCLEAR REACTIONS 248Cm(238U, X), E=6.2-7.3 MeV/nucleon; measured SF-fission fragment kinetic energies, neutron multiplicities; deduced superheavy nuclei production σ upper limit. Chemical separation, spontaneous fission counting.
doi: 10.1103/PhysRevC.33.504
1986LU04 Nucl.Phys. A452, 351 (1986) K.Lutzenkirchen, J.V.Kratz, G.Wirth, W.Bruchle, K.Summerer, R.Lucas, J.Poitou, C.Gregoire Angular Distributions in Quasi-Fission Reactions NUCLEAR REACTIONS 208Pb(50Ti, X), E=5, 5.5 MeV/nucleon; 208Pb(56Fe, X), E=5.7, 6.1, 6.8, 8.3 MeV/nucleon; measured fragment K X-rays, relative σ(fragment θ, Z); deduced tilting variance, tilting mode degree of relaxation, γ-multiplicity, timescale comparison.
doi: 10.1016/0375-9474(86)90312-X
1986WI11 Phys.Lett. 177B, 282 (1986) G.Wirth, W.Bruchle, M.Brugger, F.Wo, K.Summerer, F.Funke, J.V.Kratz, M.Lerch, N.Trautmann Sub-Coulomb Transfer in 238U + 238U Collisions NUCLEAR REACTIONS 238U(238U, 239U), E=1071-1452 MeV; measured σ(E), σ(θ). Ge(Li) detectors. Semiclassical approach calculations.
doi: 10.1016/0370-2693(86)90753-7
1985AR02 Phys.Rev.Lett. 54, 406 (1985) P.Armbruster, Y.K.Agarwal, W.Bruchle, M.Brugger, J.P.Dufour, H.Gaggeler, F.P.Hessberger, S.Hofmann, P.Lemmertz, G.Munzenberg, K.Poppensieker, W.Reisdorf, M.Schadel, K.-H.Schmidt, J.H.R.Schneider, W.F.W.Schneider, K.Summerer, D.Vermeulen, G.Wirth, A.Ghiorso, K.E.Gregorich, D.Lee, M.Leino, K.J.Moody, G.T.Seaborg, R.B.Welch, P.Wilmarth, S.Yashita, C.Frink, N.Greulich, G.Herrmann, U.Hickmann, N.Hildebrand, J.V.Kratz, N.Trautmann, M.M.Fowler, D.C.Hoffman, W.R.Daniels, H.R.von Gunten, H.Dornhofer Attempts to Produce Superheavy Elements by Fusion of 48Ca with 248Cm in the Bombarding Energy Range of 4.5-5.2 MeV/u NUCLEAR REACTIONS 248Cm(48Ca, X), E=4.5-5.2 MeV/nucleon; measured superheavy production σ upper limits vs T1/2. Different separation techniques.
doi: 10.1103/PhysRevLett.54.406
1985HO13 Phys.Rev. C31, 1763 (1985) D.C.Hoffman, M.M.Fowler, W.R.Daniels, H.R.von Gunten, D.Lee, K.J.Moody, K.Gregorich, R.Welch, G.T.Seaborg, W.Bruchle, M.Brugger, H.Gaggeler, M.Schadel, K.Summerer, G.Wirth, Th.Blaich, G.Herrmann, N.Hildebrand, J.V.Kratz, M.Lerch, N.Trautmann Excitation Functions for Production of Heavy Actinides from Interactions of 40Ca and 48Ca Ions with 248Cm NUCLEAR REACTIONS 248Cm(40Ca, X)244Bk/245Bk/246Bk/248Bk/248mBk/250Bk/245Cf/246Cf/248Cf/250Cf/252Cf/249Es/250Es/252Es/253Es/254Es/254mEs/250Fm/251Fm/252Fm/254Fm/256Fm, E=221-294 MeV; 248Cm(48Ca, X)245Bk/246Bk/248Bk/248mBk/250Bk/246Cf/248Cf/250Cf/252Cf/253Cf/254Cf/250Es/252Es/253Es/254Es/254mEs/252Fm/254Fm/255Fm/256Fm, E=223-318 MeV; measured residuals production σ(E).
doi: 10.1103/PhysRevC.31.1763
1985LU01 Z.Phys. A320, 529 (1985) K.Lutzenkirchen, J.V.Kratz, G.Wirth, W.Bruchle, L.Dorr, K.Summerer, R.Lucas, J.Poitou, C.Gregoire, S.Bjornholm Angular Distributions in Quasi-Fission Reactions: Evidence for incomplete relaxation of the tilting mode NUCLEAR REACTIONS 208Pb(50Ti, X), E=5, 5.5 MeV/nucleon; 208Pb(56Fe, X), E=5.7-8.3 MeV/nucleon; measured σ(fragment θ, Z); deduced reaction mechanism.
1985PE13 Nucl.Instrum.Methods 239, 529 (1985) P.Peuser, U.Tharun, H.J.Keim, N.Trautmann, G.Herrmann, G.Wirth A Low Background Detection System for Fragments and Neutrons from Spontaneous Fission Sources RADIOACTIVITY 248Cm(SF); measured (fragment)(n)-, (fragment)(fragment)(n-), (fragment)(fragment)-coin. Low background detection system.
doi: 10.1016/0168-9002(85)90032-4
1985RE03 Nucl.Phys. A438, 212 (1985) W.Reisdorf, F.P.Hessberger, K.D.Hildenbrand, S.Hofmann, G.Munzenberg, K.-H.Schmidt, J.H.R.Schneider, W.F.W.Schneider, K.Summerer, G.Wirth, J.V.Kratz, K.Schlitt Fusion Near the Threshold: A comparative study of the system 40Ar + 112,116,112Sn and 40Ar + 144,148,154Sm NUCLEAR REACTIONS 112,116,122Sn, 144,148,154Sm(40Ar, X), (40Ar, F), E=125-179 MeV; measured evaporation residues, fission; deduced fusion σ around, below Coulomb barrier. 152,156,162Er, 184,188,194Hg, 144,148,154Sm deduced barrier height, barrier fluctuation, role of coupling to inelastic, transfer channels, partial wave distribution above barrier. Enriched targets, velocity filter, K X-ray and γ-ray activation method, ionization chamber.
doi: 10.1016/0375-9474(85)90125-3
1985RE11 Nucl.Phys. A444, 154 (1985) W.Reisdorf, F.P.Hessberger, K.D.Hildenbrand, S.Hofmann, G.Munzenberg, K.-H.Schmidt, W.F.W.Schneider, K.Summerer, G.Wirth, J.V.Kratz, K.Schlitt, C.-C.Sahm Fusability and Fissionability in 86Kr-Induced Reactions Near and Below the Fusion Barrier NUCLEAR REACTIONS 70,76Ge, 92,100Mo, 99,102,104Ru(86Kr, X), E=257-369 MeV; measured evaporation residues; deduced evaporation residue σ at, below Coulomb barrier, barrier height, barrier fluctuation, role of coupling to inelastic channels. 156,162Er, 178,186Pt, 185,188,190Hg deduced effective fission barriers. Enriched targets, velocity filter, K X-ray activation method.
doi: 10.1016/0375-9474(85)90296-9
1984GA06 Z.Phys. A316, 291 (1984) H.Gaggeler, T.Sikkeland, G.Wirth, W.Bruchle, W.Bogl, G.Franz, G.Herrmann, J.V.Kratz, M.Schadel, K.Summerer, W.Weber Probing Sub-Barrier Fusion and Extra-Push by Measuring Fermium Evaporation Residues in Different Heavy Ion Reactions NUCLEAR REACTIONS 206,207Pb(40Ar, F), E ≤ 236 MeV; measured fission activity decay curve. 204,206,207,208Pb(40Ar, xn)242Fm/243Fm/244Fm/246Fm, E ≤ 236 MeV; 208Pb(40Ar, 4n), (40Ar, 2n)244Fm/246Fm, E ≤ 236 MeV; 206Pb(40Ar, 2n), 207Pb(40Ar, 3n)244Fm, E ≤ 236 MeV; 170Er(76Ge, 2n)244Fm, E=321-394 MeV; 160Gd(86Kr, 2n)244Fm, E=352-409 MeV; 110Pd(136Xe, 2n)244Fm, E=587-680 MeV; measured residuals production σ; deduced fusion barriers. Extra push, surface friction models.
1984LU01 Nucl.Phys. A413, 516 (1984) R.Lucas, C.Gregoire, C.Ngo, J.Poitou, E.Tomasi, A.Gobbi, A.Olmi, H.Sann, G.Wirth, J.V.Kratz, U.Lynen Equilibration of the Neutron-to-Proton Ratio for Heavy Asymmetric Systems in Heavy-Ion Collisions NUCLEAR REACTIONS 74Ge(208Pb, X), E=1550 MeV; 197Au(86Kr, X), E=550 MeV; measured σ(fragment) vs mass, charge, variances; deduced neutron to proton ratio equilibration differences. Heavy asymmetric systems.
doi: 10.1016/0375-9474(84)90425-1
1984LU05 Z.Phys. A317, 55 (1984) K.Lutzenkirchen, J.V.Kratz, W.Bruchle, H.Gaggeler, K.Summerer, G.Wirth Fusion-Fission in the Reaction 76Ge + 170Er NUCLEAR REACTIONS 170Er(76Ge, X), E(cm)=222-272 MeV; measured σ(fragment θ, Z) vs fragment mass, relative yield vs normalized mass number; deduced fission-fusion σ. Extra push model.
1982RE18 Phys.Rev.Lett. 49, 1811 (1982) W.Reisdorf, F.P.Hessberger, K.D.Hildenbrand, S.Hofmann, G.Munzenberg, K.-H.Schmidt, J.H.R.Schneider, W.F.W.Schneider, K.Summerer, G.Wirth, J.V.Kratz, K.Schlitt Influence of Collective Surface Motion on the Threshold Behavior of Nuclear Fusion NUCLEAR REACTIONS, ICPND 112,116,122Sn, 144,148,154Sm(40Ar, X), E=3.2-4.5 MeV/nucleon; measured fusion σ vs E; deduced barrier fluctuation effects.
doi: 10.1103/PhysRevLett.49.1811
1982SC05 Phys.Rev.Lett. 48, 852 (1982) M.Schadel, W.Bruchle, H.Gaggeler, J.V.Kratz, K.Summerer, G.Wirth, G.Herrmann, R.Stakemann, G.Tittel, N.Trautmann, J.M.Nitschke, E.K.Hulet, R.W.Lougheed, R.L.Hahn, R.L.Ferguson Actinide Production in Collisions of 238U with 248Cm NUCLEAR REACTIONS 248Cm(238U, X), E=7.4 MeV/nucleon; measured production σ for 244,246,248,250,251Bk, 246,248,250,251,252,253,254Cf, 252,253,254,255,256Es, 252,253,254,255,256Fm, 255,256,257,258Md; deduced dominant transfer reaction deexcitation channel.
doi: 10.1103/PhysRevLett.48.852
1981GA25 Nucl.Instrum.Methods 188, 367 (1981) H.Gaggeler, W.Bruchle, J.V.Kratz, M.Schadel, K.Summerer, W.Weber, G.Wirth, G.Herrmann A Rotating Wheel System for the Detection of Spontaneously Fissioning Nuclides from Heavy Ion Reactions RADIOACTIVITY, Fission 252Cf(SF), 244Fm(SF) [from 207Pb(40Ar, 3n), E=199 MeV]; 242mAm(SF) [from 238U(238U, X), E=7.6 MeV/nucleon]; measured T1/2. Rotating wheel technique, catcher foil, fission tract detectors. NUCLEAR REACTIONS 238U(238U, X), E=7.6 MeV/nucleon; 207Pb(40Ar, 3n), E=199 MeV; measured production σ(E) for 244Fm, 242Am. Rotating wheel technique, catcher foil, fission track detectors.
1981KR05 Nucl.Phys. A357, 437 (1981) J.V.Kratz, J.Poitou, W.Bruchle, H.Gaggeler, M.Schadel, G.Wirth, R.Lucas Primary Mass and Charge Distributions in the Reaction of 900 MeV 132Xe Ions with 197Au NUCLEAR REACTIONS 197Au(132Xe, X), E=900 MeV; measured σ(fragment Z, mass) for 51 ≤ Z ≤ 87, missing mass, fragment velocities; deduced integral charge, mass distributions, preneutron emission σ(fragment Z, E, mass). Neutron, proton exchange correlations.
doi: 10.1016/0375-9474(81)90231-1
1981PO01 Nucl.Instrum.Methods 180, 221 (1981) J.Poitou, J.V.Kratz, G.Wirth, R.Lucas On the Reconstruction of Primary Mass and Charge Distributions from Measured Secondary Quantities in Damped Heavy-Ion Collisions NUCLEAR REACTIONS 197Au(132Xe, X), E=900 MeV; measured Eγ, Iγ, E(X-ray), I(X-ray), (X-ray)γ-coin; deduced yields for Hf, Ta, W, Re, Os, Ir, Pt, Au, Hg, Tl, Pb, most probable isotope distribution < A > vs Z, charge variances vs total excitation energy. Preevaporation distribution evaluation from post evaporation measurements.
doi: 10.1016/0029-554X(81)90033-1
1980GA24 Phys.Rev.Lett. 45, 1824 (1980) H.Gaggeler, N.Trautmann, W.Bruchle, G.Herrmann, J.V.Kratz, P.Peuser, M.Schadel, G.Tittel, G.Wirth, H.Ahrens, H.Folger, G.Franz, K.Summerer, M.Zendel Search for Superheavy Elements in the 238U +238U Reaction NUCLEAR REACTIONS, Fission 238U(238U, X), (238U, F), E=8.6 MeV/nucleon; measured fragment E, spontaneous fission(fragment)(fragment)-coin; deduced superheavy production σ upper limit. Thick target.
doi: 10.1103/PhysRevLett.45.1824
1980KR14 Z.Phys. A296, 141 (1980) J.V.Kratz, W.Bruchle, H.Gaeggeler, M.Schadel, K.Summerer, G.Wirth Fast A/Z Equilibration and Correlated Nucleon Exchange in Damped Collisions of 56Fe Ions with 209Bi NUCLEAR REACTIONS 209Bi(56Fe, X), E=8.3 MeV/nucleon; analyzed average fragment mass to charge ratio, mass, charge variances ratio data; deduced fast charge equilibration, fully correlated nucleon exchange.
doi: 10.1007/BF01412655
1980ST11 Z.Phys. A295, 269 (1980) R.G.Stokstad, W.Reisdorf, K.D.Hildenbrand, J.V.Kratz, G.Wirth, R.Lucas, J.Poitou The Sub-Barrier Fusion of 40Ar with 144,148,154Sm NUCLEAR REACTIONS 144,148,154Sm(40Ar, X), E=3.6-4.5 MeV/nucleon; measured I(K X-ray)(t, fragment E); deduced evaporation-residue production σ, fusion-fission σ. ΔE-E ionization chamber.
doi: 10.1007/BF01412207
1979KR17 Nucl.Phys. A332, 477 (1979) J.V.Kratz, W.Bruchle, G.Franz, M.Schadel, I.Warnecke, G.Wirth, M.Weis Study of the N/Z Ratios of Light and Heavy Fragments from Collisions of 129Xe, 132Xe and 136Xe with 197Au Near the Interaction Barrier NUCLEAR REACTIONS 197Au(129Xe, X), E ≤ 761 MeV; 197Au(132Xe, X), E ≤ 764 MeV; 197Au(136Xe, X), E ≤ 787 MeV; measured fragment production σ, missing mass; deduced charge, mass distributions. Damped collision model.
doi: 10.1016/0375-9474(79)90014-9
1979LU04 Z.Phys. A290, 327 (1979) R.Lucas, J.Poitou, J.V.Kratz, G.Wirth Study of the Heavy Products from 84Kr + 238U Collisions at 522 MeV NUCLEAR REACTIONS 238U(84Kr, X), E=522 MeV; measured σ(θx), integral σ; deduced reaction mechanism. Catcher foil technique, X-ray identification of reaction products.
doi: 10.1007/BF01408550
1979PO22 Phys.Lett. 88B, 69 (1979) J.Poitou, R.Lucas, J.V.Kratz, W.Bruchle, H.Gaggeler, M.Schadel, G.Wirth Second Moments of N/Z-Distributions in Damped Collisions of 132Xe with 197Au NUCLEAR REACTIONS 197Au(132Xe, X), E=890 MeV; measured I(X-ray), E(X-ray), Eγ, Iγ, γX-ray-coin; deduced charge variances at fixed mass asymmetry. Classical statistical fluctuation model.
doi: 10.1016/0370-2693(79)90116-3
1978GA12 Z.Phys. A286, 419 (1978) H.Gaggeler, W.Bruchle, H.Ahrens, H.Folger, G.Franz, J.V.Kratz, M.Schadel, I.Warnecke, G.Wirth, N.Trautmann, G.Herrmann, N.Kaffrell, P.Peuser, G.Tittel Search for Long-Lived Superheavy Elements in the Reaction of 136Xe with 238U NUCLEAR REACTIONS 238U(136Xe, X), E=6.6 MeV/nucleon; measured formation σ for superheavy elements with 1-200 day T1/2.
1978KR17 S.Afr.J.Phys. 1, 154 (1978) J.V.Kratz, H.Ahrens, W.Bruchle, H.Gaggeler, M.Schadel, I.Warnecke, G.Wirth, G.Herrmann, N.Trautmann, M.Weis Correlations between Proton and Neutron Exchanges in Damped Collisions of 129,132,136Xe + Au and 238U + 238U NUCLEAR REACTIONS 197Au(129Xe, X), (132Xe, X), (136Xe, X), 238U(238U, X), E=5.9 MeV/nucleon; analyzed isotope distribution vs Z; deduced different p, n strength correlations for Au+Xe, U+U systems.
1978SC22 Phys.Rev.Lett. 41, 469 (1978) M.Schadel, J.V.Kratz, H.Ahrens, W.Bruchle, G.Franz, H.Gaggeler, I.Warnecke, G.Wirth, G.Herrmann, N.Trautmann, M.Weis Isotope Distributions in the Reaction of 238U with 238U NUCLEAR REACTIONS 238U(238U, X), E=1785 MeV; measured σ(A, Z). Radiochemically determined σ.
doi: 10.1103/PhysRevLett.41.469
1977KR10 Phys.Rev.Lett. 39, 984 (1977) J.V.Kratz, H.Ahrens, W.Bogl, W.Bruchle, G.Franz, M.Schadel, I.Warnecke, G.Wirth, G.Klein, M.Weis Charge-Asymmetry Equilibration in the Reaction of 129,132,136Xe with 197Au Near the Interaction Barrier NUCLEAR REACTIONS 197Au(129Xe, X), E=761 MeV; 197Au(132Xe, X), E=769 MeV; 197Au(136Xe, X), E=795 MeV; measured σ(A, Z); deduced proton, neutron population ratios.
doi: 10.1103/PhysRevLett.39.984
1975WI08 Z.Phys. A272, 291 (1975) G.Wirth, N.Kaffrell, K.Chayawattanangkur, G.Herrmann, K.E.Seyb Decay of the 4.2-min 152Pm into Levels of 152Sm RADIOACTIVITY 152,152mPm; measured Eγ, Iγ, γγ-coin, T1/2; deduced Qβ, log ft. 152Sm deduced levels, J, π, K, B(E2).
doi: 10.1007/BF01438023
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