NSR Query Results
Output year order : Descending NSR database version of April 11, 2024. Search: Author = T.Happ Found 25 matches. 1999AH07 Phys.Rev. C60, 064601 (1999) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, C.M.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, Th.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.M.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, A.R.Young, J.E.Yurkon Positron-Electron Pairs Produced in Heavy-Ion Collisions NUCLEAR REACTIONS 232Th(238U, X), E=5.95 MeV/nucleon; 181Ta(238U, X), E=5.95, 6.1, 6.3 MeV/nucleon; measured positron, electron spectra, multiplicities, e-e+-coin, angular correlation; deduced no sharp structure in sum-energy spectra. APEX spectrometer.
doi: 10.1103/PhysRevC.60.064601
1997AH01 Phys.Rev.Lett. 78, 618 (1997) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.R.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon, and the APEX Collaboration Search for Monoenergetic Positron Emission from Heavy-Ion Collisions at Coulomb-Barrier Energies NUCLEAR REACTIONS 181Ta(238U, X), E=5.95-6.3 MeV/nucleon; 232Th(238U, X), E=5.95 MeV/nucleon; measured positron energy spectra; deduced no structure.
doi: 10.1103/PhysRevLett.78.618
1997AH04 Phys.Rev. C55, R2755 (1997) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.A.Chishti, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, J.S.Greenberg, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon, and the APEX Collaboration Internal Pair Conversion in Heavy Nuclei NUCLEAR REACTIONS 206Pb(206Pb, X), E=5.90 MeV/nucleon; measured e+e--sum energy spectra, Doppler corrected Eγ; deduced internal pair conversion to gamma branching ratio. 232Th(208Pb, X), E=5.80 MeV/nucleon; 238U(208Pb, X), E=5.80 MeV/nucleon; 181Ta(238U, X), E=5.95 MeV/nucleon; 232Th(238U, X), E=5.90 MeV/nucleon; measured e+e--sum energy, Doppler corrected Eγ; deduced no discrete lines evidence in e+e- spectra. 238U deduced new levels evidence.
doi: 10.1103/PhysRevC.55.R2755
1997AH05 Z.Phys. A358, 235 (1997) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, A.Young, J.E.Yurkon, and the APEX Collaboration The Positron-Electron Peak Puzzle: Results from APEX NUCLEAR REACTIONS 232Th(238U, X), E=5.78-5.95 MeV/nucleon; 181Ta(238U, X), E=5.79-6.3 MeV/nucleon; measured total (e+)(heavy-ion)-, (e+e-)(heavy-ion)-coin events number; deduced very low light neutral particle production upper limits.
doi: 10.1007/s002180050316
1997CU03 Acta Phys.Pol. B28, 367 (1997) J.Cub, J.Holeczek, S.Wan, T.Aumann, T.Baumann, K.Boretzky, W.Dostal, B.Eberlein, H.Emling, Ch.Ender, Th.W.Elze, H.Geissel, J.Gerl, A.Grunschloss, D.Habs, T.Happ, R.Holzmann, N.Iwasa, M.Kaspar, A.Kleinbohl, F.Kock, O.Koschorrek, J.V.Kratz, G.Kraus, R.Kulessa, Y.Leifels, A.Leistenschneider, G.Munzenberg, F.Nickel, I.Peter, P.Reiter, H.Schaffner, C.Scheidenberger, G.Schrieder, D.Schwalm, R.Schubart, R.Schubert, W.Schwab, H.Simon, G.Stengel, J.Stroth, K.Summerer, A.Surowiec, P.Thirolf, E.Wajda, H.J.Wollersheim, A.Zentek Invariant-Mass and γ-Ray Spectroscopy using Secondary, Radioactive Ion Beams NUCLEAR REACTIONS Be(50Ti, X), E=330 MeV/nucleon; measured fragment mass, charge distribution. Pb(18O, 18O'), (46K, 46K'), (27Mg, 27Mg'), (28Mg, 28Mg'), E≈250 MeV/nucleon; measured Eγ, Iγ following projectile Coulomb excitation. Secondary, radioactive beams.
1997DI05 Z.Phys. A358, 11 (1997) E.Ditzel, J.M.Hoogduin, H.Backe, J.Baumann, F.W.N.de Boer, H.Bokemeyer, M.Debowski, R.Ganz, J.Gerl, T.Happ, M.Kaspar, J.van Klinken, T.Kroll, R.Kulessa, I.Peter, P.Salabura, H.Schaffner, S.Schremmer, K.Vetter, H.J.Wollersheim, H.Xie Absence of E0 Transitions Around 1.8 MeV After Collisions of 238U with 181Ta NUCLEAR REACTIONS 181Ta(238U, X), E=6.0 MeV/nucleon; measured e- spectra, e-(recoil)-coin. 181Ta, 238U deduced σ upper limits for E0 decays. Mini-orange spectrometers, PPAC, Doppler-corrected e- spectra.
doi: 10.1007/s002180050270
1996AH05 Acta Phys.Pol. B27, 387 (1996) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.Gazes, A.L.Hallin, T.Happ, N.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, A.Young, J.E.Yurkon, and the APEX Collaboration The Positron Peak Puzzle - Recent Results from APEX NUCLEAR REACTIONS 232Th(238U, X), E=5.95 MeV/nucleon; 181Ta(238U, X), E=5.96-6.3 MeV/nucleon; 206Pb(206Pb, X), E not given; analyzed e+e--sum energy spectra. 232Th, 238U(208Pb, X), E=5.8 MeV/nucleon; 232Th, 181Ta(238U, X), E=5.95 MeV/nucleon; 206Pb(206Pb, X), E=5.9 MeV/nucleon; analyzed Doppler reconstructed γ spectra; deduced limits on 1.78 MeV 238U transition possible contribution to (heavy ion)γ-coin.
1996AH07 Nucl.Instrum.Methods Phys.Res. A370, 539 (1996) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, J.S.Greenberg, J.P.Greene, A.L.Hallin, Th.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.M.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.R.Young, J.E.Yurkon A Solenoidal Spectrometer for Positron-Electron Pairs Produced in Heavy-Ion Collisions RADIOACTIVITY 85Sr(EC); 113Sn(EC); 203Hg(β-); measured electron spectra; deduced apparatus response, efficiency. New solenoidal spectrometer. NUCLEAR REACTIONS 181Ta(238U, X), E=6.1 MeV/nucleon; measured γ-, positron energy spectra. New solenoidal spectrometer.
doi: 10.1016/0168-9002(95)00829-2
1996DE11 Phys.Rev. C53, 1266 (1996) S.Deylitz, B.D.Valnion, K.El Abiary, J.de Boer, N.Gollwitzer, R.Hertenberger, G.Graw, R.Kulessa, Ch.Briancon, D.Le Du, R.Meunier, M.Hussonnois, O.Constantinescu, S.Fortier, J.B.Kim, L.H.Rosier, G.Rotbard, Yu.Ts.Oganessian, S.A.Karamian, H.J.Wollersheim, H.Folger, J.Gerl, Th.Happ, C.Hategan Inelastic Deuteron Scattering from the High-Spin Isomer 178mHf2 (16+) NUCLEAR REACTIONS 178Hf(d, d'), E=22 MeV; measured deuteron spectra, σ(θ). 178Hf deduced possible level, J, π. Target in isomeric state.
doi: 10.1103/PhysRevC.53.1266
1996LU07 Z.Phys. A355, 377 (1996) E.Lubkiewicz, H.J.Wollersheim, R.Kulessa, Ch.Briancon, W.Bruchle, O.Constantinescu, M.Debowski, E.Ditzel, H.Folger, J.Gerl, F.Hannachi, T.Happ, M.Hussonnois, E.Jager, S.Karamyan, M.Kaspar, Th.Kroll, Yu.Ts.Oganessian, I.Peter, H.Schaffner, S.Schremmer, R.Schubert, N.Trautmann, K.Vetter, G.Zauner Coulomb Excitation of the K(π) = 16+ Rotational Band in 178Hf NUCLEAR REACTIONS 176,177,179,178Hf(208Pb, 208Pb'), E=4.77 MeV/nucleon; measured Eγ, Iγ, (particle)(particle)γ-coin following Coulomb excitation. 178Hf deduced level, J, π, intrinsic quadrupole moment. Rigid rotor model. Stable Hf targets, 178Hf target in a high-spin isomeric state.
doi: 10.1007/s002180050125
1995AH01 Nucl.Phys. A583, 247c (1995) I.Ahmad, S.M.Austin, B.B.Back, D.Bazin, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, J.S.Greenberg, A.L.Hallin, T.Happ, J.Last, N.Kaloskamis, E.Kashy, W.Kutschera, C.J.Lister, M.Liu, M.R.Maier, D.Mercer, A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon Positron Production in Heavy Ion Collisions: Current status of the problem NUCLEAR REACTIONS 181Ta(238U, X), E=5.9-6.3 MeV/nucleon; compiled, analyzed, reviewed electron, positron production data.
doi: 10.1016/0375-9474(94)00667-C
1995AH06 Phys.Rev.Lett. 75, 2658 (1995) I.Ahmad, S.M.Austin, B.B.Back, R.R.Betts, F.P.Calaprice, K.C.Chan, A.Chishti, P.Chowdhury, C.Conner, R.W.Dunford, J.D.Fox, S.J.Freedman, M.Freer, S.B.Gazes, A.L.Hallin, T.Happ, D.Henderson, N.I.Kaloskamis, E.Kashy, W.Kutschera, J.Last, C.J.Lister, M.Liu, M.R.Maier, D.J.Mercer, D.Mikolas, P.A.A.Perera, M.D.Rhein, D.E.Roa, J.P.Schiffer, T.A.Trainor, P.Wilt, J.S.Winfield, M.Wolanski, F.L.H.Wolfs, A.H.Wuosmaa, G.Xu, A.Young, J.E.Yurkon, and the APEX Collaboration Search for Narrow Sum-Energy Lines in Electron-Positron Pair Emission from Heavy-Ion Collisions Near the Coulomb Barrier NUCLEAR REACTIONS 181Ta(238U, X), E=5.95-6.3 MeV/nucleon; 232Th(238U, X), E=5.95 MeV/nucleon; measured pair emission sum spectra; deduced no sharp lines evidence, neutral particle isolated decay related features.
doi: 10.1103/PhysRevLett.75.2658
1995KO15 Z.Phys. A351, 143 (1995) W.Korten, P.Brocking, H.Hubel, W.Pohler, U.J.van Severen, P.Willsau, T.Hartlein, C.Ender, P.Reiter, D.Schwalm, J.Gerl, T.Happ, T.Kroll, M.Kaspar, I.Peter, S.Schremmer, K.Vetter Lifetime of the Two-Phonon Vibrational State in 232Th NUCLEAR REACTIONS 232Th(90Zr, 90Zr'), E=410 MeV; measured Eγ, Iγ following Coulomb excitation, Doppler-shift recoil distance. 232Th deduced high-spin levels T1/2, B(λ).
doi: 10.1007/BF01289524
1994WU07 Phys.Rev. C50, 2909 (1994) A.H.Wuosmaa, M.Freer, B.B.Back, R.R.Betts, J.C.Gehring, B.G.Glagola, Th.Happ, D.J.Henderson, P.Wilt, I.G.Bearden Angular-Distribution Measurements for 12C(12C, 12C[0+2])12C(0+2) Inelastic Scattering NUCLEAR REACTIONS 12C(12C, 12C'), E(cm)=29.5-35.5 MeV; measured σ(θ); deduced structure features, dominant l.
doi: 10.1103/PhysRevC.50.2909
1994WU11 Nucl.Instrum.Methods Phys.Res. A345, 482 (1994) A.H.Wuosmaa, P.Wilt, B.B.Back, R.R.Betts, M.Freer, B.G.Glagola, Th.Happ, D.J.Henderson, I.G.Bearden, R.W.Zurmuhle, D.P.Balamuth, S.Barrow, D.Benton, Q.Li, Z.Liu, Y.Miao Instrumentation of Double-Sided Silicon Strip Detectors for Multi-Particle Detection NUCLEAR REACTIONS 12C(12C, 8Be), E ≈ 58 MeV; analyzed data; deduced 2α-, 3α-excitation spectra, two-body (Q-value) spectra. Double-sided Si strip detectors, compact, modular, low-cost, high density readout system.
doi: 10.1016/0168-9002(94)90503-7
1993EV03 Nucl.Instrum.Methods Phys.Res. A326, 136 (1993) L.Evensen, A.Hanneborg, T.Happ, A.H.Wuosmaa, R.R.Betts A Fast Low Noise Silicon Detector for Electron Spectroscopy up to 1 MeV RADIOACTIVITY 207Bi(EC), (β+); 134Cs(EC), (β-); measured electron spectra. Fast low noise silicon detector.
doi: 10.1016/0168-9002(93)90343-G
1993WU01 Nucl.Phys. A553, 563c (1993) A.H.Wuosmaa, B.B.Back, I.G.Bearden, R.R.Betts, M.Freer, J.Gehring, B.G.Glagola, Th.Happ, D.J.Henderson, P.Wilt Evidence for Alpha-Particle Chain Configurations in 24Mg NUCLEAR REACTIONS 12C(12C, 12C'), E=52-80 MeV; measured σ(θ). 24Mg deduced α-clustering configuration evidence.
doi: 10.1016/0375-9474(93)90660-P
1992EC01 Z.Phys. A343, 267 (1992) G.Eckert, K.Stelzer, R.O.Nelson, Th.W.Elze, Th.Happ, H.J.Wollersheim, H.Emling, H.Grein, W.Henning, R.Kulessa, E.Lubkiewicz, Ch.Lauterbach Inelastic Scattering and Nucleon Transfer in the System 232Th + 206Pb Near the Coulomb Barrier NUCLEAR REACTIONS 232Th(206Pb, X), (206Pb, 206Pb'), (206Pb, 208Pb), E=6.4 MeV/nucleon; measured (particle)(particle)γ-coin, Eγ, Iγ; deduced average Eγ, γ-multiplicity, transfer reaction mechanism. 232,230Th deduced ground state band transitions Iγ.
doi: 10.1007/BF01291525
1992WU02 Phys.Rev.Lett. 68, 1295 (1992) A.H.Wuosmaa, R.R.Betts, B.B.Back, M.Freer, B.G.Glagola, Th.Happ, D.J.Henderson, P.Wilt, I.G.Bearden Evidence for Alpha-Particle Chain Configurations in 24Mg NUCLEAR REACTIONS 12C(12C, 12C'), E=52-80 MeV; measured σ(θ) vs E, αα-coin. 24Mg deduced structure, α-particle chain configuration evidence, deformation features.
doi: 10.1103/PhysRevLett.68.1295
1991WU02 Phys.Lett. 255B, 316 (1991) A.H.Wuosmaa, K.E.Rehm, B.G.Glagola, Th.Happ, W.Kutschera, F.L.H.Wolfs Neutron Transfer at Large Distances in the System 36S + 92Mo NUCLEAR REACTIONS 92Mo(36S, 35S), (36S, 34S), E=140, 180 MeV; measured σ(θ); deduced transfer probability, reaction mechanism.
doi: 10.1016/0370-2693(91)90772-I
1991WU06 Phys.Lett. 263B, 23 (1991) A.H.Wuosmaa, R.R.Betts, B.B.Back, M.P.Carpenter, H.Esbensen, P.B.Fernandez, B.G.Glagola, Th.Happ, R.V.F.Janssens, T.L.Khoo, E.F.Moore, F.Scarlassara, Ph.Benet Gamma-Ray Multiplicity Distributions in 16O + 152Sm Fusion Near and Below the Coulomb Barrier NUCLEAR REACTIONS, ICPND 152Sm(16O, X), E=60-80 MeV; measured γ-multiplicity, σ(evaporation residue θ); calculated fusion σ(E). Coupled-channels model, deformation effects.
doi: 10.1016/0370-2693(91)91701-V
1990AH01 Nucl.Instrum.Methods Phys.Res. A299, 201 (1990) I.Ahmad, R.R.Betts, T.Happ, D.J.Henderson, F.L.H.Wolfs, A.H.Wuosmaa Nuclear Spectroscopy with Si PIN Diode Detectors at Room Temperature RADIOACTIVITY 57Co, 241Am; measured α-spectra. 203Hg; measured electron spectra. 238Pu; measured α-spectra; deduced detector resolution. Si PIN diode detectors.
doi: 10.1016/0168-9002(90)90776-3
1989MA07 Phys.Rev. C39, 1111 (1989) A.Mauthofer, K.Stelzer, Th.W.Elze, Th.Happ, J.Gerl, A.Frank, P.Van Isacker Supersymmetry Classification of Nuclear Levels in Odd-Mass Platinum Isotopes NUCLEAR STRUCTURE 192,194,196,198Pt; calculated levels; deduced supersymmetry classification scheme. Interacting boson-fermion model, even-odd isotope data input.
doi: 10.1103/PhysRevC.39.1111
1987PE08 Phys.Rev. C36, 83 (1987) R.Peckhaus, Th.W.Elze, Th.Happ, Th.Dresel Search for Peak Structure in e+ + Th Collisions ATOMIC PHYSICS Th(e+, e+); E < 1.9 MeV; measured electron, positron spectra, (e+e-)-coin; deduced no peak structure. Radioactive 68Ga source.
doi: 10.1103/PhysRevC.36.83
1986MA57 Phys.Rev. C34, 1958 (1986) A.Mauthofer, K.Stelzer, J.Gerl, Th.W.Elze, Th.Happ, G.Eckert, T.Faestermann, A.Frank, P.Van Isacker New Supersymmetry Classification of Nuclear Levels in 195Pt NUCLEAR REACTIONS 195Pt(32S, 32S'γ), E=125 MeV; measured γγ-, γ(particle)-coin, γ(θ) following Coulomb excitation. 195Pt deduced levels, B(E2), new supersymmetry classification scheme . Interacting boson-fermion model.
doi: 10.1103/PhysRevC.34.1958
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