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NSR database version of May 24, 2024.

Search: Author = H.J.Specht

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2008SP03      Nucl.Phys. A805, 338c (2008)

H.J.Specht

Lepton-pair production in nuclear collisions - past, present, future

doi: 10.1016/j.nuclphysa.2008.02.275
Citations: PlumX Metrics


2005BO06      Nucl.Phys. A749, 251c (2005)

K.Borer, W.Chen, Z.Li, C.Cicalo, A.De Falco, M.Floris, A.Masoni, G.Puddu, S.Serci, G.Usai, J.Buytaert, M.Keil, C.Lourenco, E.Radermacher, P.Rosinsky, E.Tveiten, J.Castor, A.Devaux, P.Force, N.Guettet, F.Manso, K.Banicz, S.Damjanovic, H.J.Specht, A.David, J.Lozano, A.Neves, P.Parracho, P.Ramalhete, J.Seixas, R.Shahoyan, P.Sonderegger, R.Veenhof, H.Wohri, B.Cheynis, L.Ducroux, J.-Y.Grossiord, A.Guichard, P.Pillot, R.Tieulent, B.Chaurand, L.Kluberg, H.En'yo, J.Heuser, H.Ohnishi, A.Drees, R.Arnaldi, A.Colla, P.Cortese, N.de Marco, A.Ferretti, C.Oppedisano, E.Scomparin, A.Grigorian, H.Gulkanyan, H.Vardanyan

First results of the NA60 experiment at the CERN SPS

NUCLEAR REACTIONS In(In, X), E=158 GeV/nucleon; measured dimuon invariant mass spectra; deduced J/ψ and ψ' yields.

doi: 10.1016/j.nuclphysa.2004.12.047
Citations: PlumX Metrics


2002SP01      Nucl.Phys. A698, 341c (2002)

H.J.Specht

Experimental Conference Summary

doi: 10.1016/S0375-9474(01)01381-1
Citations: PlumX Metrics


1998AG08      Eur.Phys.J. C 4, 231 (1998)

G.Agakichiev, M.Appenheimer, R.Averbeck, F.Ballester, R.Baur, A.Brenschede, J.Diaz, A.Drees, U.Faschingbauer, J.L.Ferrero, P.Fischer, Z.Fraenkel, M.Franke, Ch.Fuchs, E.Gatti, P.Glassel, Th.Gunzel, C.P.de los Heros, F.Hess, R.Holzmann, V.Iourevitch, D.Irmscher, C.Jacob, W.Kuhn, B.Lenkeit, H.Lohner, A.Marin, F.M.Marques, G.Martinez, V.Metag, M.Notheisen, R.Novotny, L.H.Olsen, R.Ostendorf, Y.Panebratsev, A.Pfeiffer, I.Ravinovich, P.Rehak, M.Sampietro, A.Schon, J.Schukraft, Y.Schutz, S.Shimansky, A.Shor, R.S.Simon, H.J.Specht, V.Steiner, S.Tapprogge, G.Tel-Zur, I.Tserruya, Th.Ullrich, H.Wilschut, J.P.Wurm

Systematic Study of Low-Mass Electron Pair Production in p-Be and p-Au Collisions at 450 GeV/c

NUCLEAR REACTIONS Be, 197Au(p, X), E at 450 GeV/c; measured e+e- pair production rate, mass spectra; deduced η Dalitz decay contribution.


1998AG09      Eur.Phys.J. C 4, 249 (1998)

G.Agakichiev, M.Appenheimer, R.Averbeck, F.Ballester, R.Baur, A.Brenschede, J.Diaz, A.Drees, U.Faschingbauer, J.L.Ferrero, P.Fischer, Z.Fraenkel, M.Franke, Ch.Fuchs, E.Gatti, P.Glassel, Th.Gunzel, C.P.de los Heros, F.Hess, R.Holzmann, D.Irmscher, C.Jacob, W.Kuhn, B.Lenkeit, H.Lohner, A.Marin, F.M.Marques, G.Martinez, V.Metag, M.Notheisen, R.Novotny, L.H.Olsen, R.Ostendorf, Y.Panebratsev, A.Pfeiffer, I.Ravinovich, P.Rehak, M.Sampietro, A.Schon, J.Schukraft, Y.Schutz, S.Shimansky, A.Shor, R.S.Simon, H.J.Specht, V.Steiner, S.Tapprogge, G.Tel-Zur, I.Tserruya, Th.Ullrich, H.Wilschut, J.P.Wurm, V.Yurevich

Neutron Meson Production in p-Be and p-Au Collisions at 450 GeV Beam Energy

NUCLEAR REACTIONS Be, 197Au(p, X), E=450 GeV; measured neutral meson associated invariant mass, transverse momentum spectra, production σ; deduced target mass dependence.

doi: 10.1007/s100529800804
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1983GL02      Z.Phys. A310, 189 (1983)

P.Glassel, D.v.Harrach, H.J.Specht, L.Grodzins

Observation of Proximity- and Non-Equilibrium Effects in Ternary Heavy Ion Reactions

NUCLEAR REACTIONS 166Er(84Kr, X), 122Sn(129Xe, X), E=12.5 MeV/nucleon; measured fragment mass < A >, variances vs total kinetic energy loss; deduced reaction mechanism. Binary, ternary events.


1983HA29      Phys.Scr. T5, 183 (1983)

D.Habs, U.v.Helmolt, H.W.Heyng, R.Kroth, B.Kolb, D.Pelte, D.Schwalm, H.J.Specht, W.Hennerici, H.J.Hennrich, G.Himmele, R.Repnow, W.Wahl, R.S.Simon, R.Albrecht, V.Metag

First Results on γ-Ray Spectroscopy in the Second Minimum of 238U and 240Pu

RADIOACTIVITY 238mU(SF) [from 238U(d, pn), E=20 MeV]; 240mPu(SF) [from 238U(α, 2n), E=25 MeV]; measured prefission γ-spectra, γ(delayed-fission)-coin. 238U, 240Pu deduced second minimum vibrational band deexcitation transitions. Crystal ball.

doi: 10.1088/0031-8949/1983/T5/035
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1983HI09      Nucl.Phys. A404, 401 (1983)

G.Himmele, H.Backe, P.A.Butler, D.Habs, V.Metag, H.J.Specht, J.B.Wilhelmy

Measurements of Nuclear Reaction Cross Sections for 183,184W + 238U near the Interaction Barrier

NUCLEAR REACTIONS 238U(184W, 182W), (184W, 183W), (184W, 185W), (184W, 186W), (183W, 183W'), E ≈ interaction barrier; measured σ(transfer), fission σ; deduced transfer, fission probabilities.

doi: 10.1016/0375-9474(83)90556-0
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1982GL03      Phys.Rev.Lett. 48, 1089 (1982)

P.Glassel, D.v.Harrach, L.Grodzins, H.J.Specht

Direct Observation of Nonequilibrium Effects in Sequential Fission

NUCLEAR REACTIONS, Fission 122Sn(129Xe, F), E=12.5 MeV/nucleon; measured fragment yield, relative velocity, average pair mass fraction vs φ; deduced nonequilibrium effects in sequential fission. Three-body channels, kinematically complete experiment.

doi: 10.1103/PhysRevLett.48.1089
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1982GO02      Phys.Rev.Lett. 48, 1160 (1982)

U.Goerlach, D.Habs, V.Metag, B.Schwartz, H.J.Specht, H.Backe

Lowest β-Vibrational Phonon in the Second Minima of 236,238U

NUCLEAR REACTIONS, Fission 236,238U(d, np), E=20 MeV; measured I(ce), ce(fragment)(t). 236,238U deduced shape isomer decay characteristics, K/L ratio, transition multipolarity, vibrational band characteristics.

doi: 10.1103/PhysRevLett.48.1160
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1982HA14      Phys.Rev.Lett. 48, 1093 (1982)

D.v.Harrach, P.Glassel, L.Grodzins, S.S.Kapoor, H.J.Specht

Direct Observation of Proximity Effects in Ternary Heavy-Ion Reactions

NUCLEAR REACTIONS, Fission 166Er, 90Zr(84Kr, F), E=12.4 MeV/nucleon; 122Sn(129Xe, F), E=12.5 MeV/nucleon; measured fragment mass, total kinetic energy distributions; deduced reaction mechanism, proximity effects, scission to scission time. Two-, three-body channels, kinematically complete experiments.

doi: 10.1103/PhysRevLett.48.1093
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1982HI16      Nucl.Phys. A391, 191 (1982)

G.Himmele, H.Backe, P.A.Butler, D.Habs, V.Metag, J.B.Wilhelmy, H.J.Specht

Experimental Features of Coulomb Fission

NUCLEAR REACTIONS 238U(152Sm, 152Sm'), 238U(184W, 184W'), 232Th(184W, 184W'), 248Cm(232Th, 232Th'), E ≈ Coulomb barrier; measured fission σ following inelastic scattering. 232Th, 238U, 248Cm deduced fission probability. Enriched target.

doi: 10.1016/0375-9474(82)90227-5
Citations: PlumX Metrics


1980ME15      Phys.Rep. 65, 1 (1980)

V.Metag, D.Habs, H.J.Specht

Spectroscopic Properties of Fission Isomers

NUCLEAR STRUCTURE A=230-250; compiled, reviewed fission isomers data; deduced superdeformed related features.

doi: 10.1016/0370-1573(80)90006-X
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1979BA02      Phys.Rev.Lett. 42, 490 (1979)

H.Backe, L.Richter, D.Habs, V.Metag, J.Pedersen, P.Singer, H.J.Specht

Spectroscopy in the Second Minimum of the Potential Energy Surface of 239Pu

RADIOACTIVITY 239mPu [from 238U(α, 3n), E=33 MeV]; measured E(ce), I(ce). 239Pu deduced levels in second minimum, J, π, δ, rotational parameters. Nilsson assignments.

doi: 10.1103/PhysRevLett.42.490
Citations: PlumX Metrics


1979BA42      Phys.Rev.Lett. 43, 1077 (1979)

H.Backe, F.Weik, P.A.Butler, V.Metag, J.B.Wilhelmy, D.Habs, G.Himmele, H.J.Specht

Direct Observation of Coulomb Fission of 238U with 184W Projectiles

NUCLEAR REACTIONS 238U(184W, 184W'F), E=5-6 MeV/nucleon; measured I(ce), ce fragment-coin, Coulomb excitation σ(E), σ(fission).

doi: 10.1103/PhysRevLett.43.1077
Citations: PlumX Metrics


1979FR10      Z.Phys. A292, 171 (1979)

H.Freiesleben, K.D.Hildenbrand, F.Puhlhofer, W.F.W.Schneider, R.Bock, D.v.Harrach, H.J.Specht

The Reaction 238U + 238U at 7.42 MeV/u

NUCLEAR REACTIONS 238U(238U, 238U), 238U(238U, X), E=1766 MeV; measured σ(θ), σ(Eα), α(X-ray)-coin; deduced production σ for 208,210Po, 211At, 222Rn, 223,224,225Ra, 225,226Ac, 227,228Th, 230U, 230Pa, superheavy nuclei.

doi: 10.1007/BF01441624
Citations: PlumX Metrics


1979GL03      Phys.Rev.Lett. 43, 1483 (1979)

P.Glassel, D.v.Harrach, Y.Civelekoglu, R.Manner, H.J.Specht, J.B.Wilhelmy, H.Freiesleben, K.D.Hildenbrand

Three-Particle Exclusive Measurements of the Reactions 238U + 238U and 238U + 248Cm

NUCLEAR REACTIONS 238U, 248Cm(238U, F), E=7.5 MeV/nucleon; measured σ(θ). Kinematically complete experiment, three-body breakup.

doi: 10.1103/PhysRevLett.43.1483
Citations: PlumX Metrics


1979HA24      Phys.Rev.Lett. 42, 1728 (1979)

D.v.Harrach, P.Glassel, Y.Civelekoglu, R.Manner, H.J.Specht

Angular Momentum Transfer in Deeply Inelastic Collisions from Exclusive Sequential-Fission Experiments

NUCLEAR REACTIONS 58Ni, 90Zr(208Pb, X), (238U, X), E=7.5 MeV/amu; measured fission-fragment angular correlation; deduced reaction mechanism. Kinematically complete experiment.

doi: 10.1103/PhysRevLett.42.1728
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1979UL01      Phys.Rev.Lett. 42, 1596 (1979)

G.Ulfert, V.Metag, D.Habs, H.J.Specht

Quadrupole Moment of the 200-ns Fission Isomer in 237U

NUCLEAR REACTIONS 238U(d, pn), E=20 MeV; measured yield of fission-isomeric recoil. 238mU level deduced quadrupole moment.

doi: 10.1103/PhysRevLett.42.1596
Citations: PlumX Metrics


1978GO10      Z.Phys. A287, 171 (1978)

U.Goerlach, D.Habs, M.Just, V.Metag, P.Paul, H.J.Specht, H.J.Maier

Resonances in the Isomeric and Prompt Fission Probabilities of 240Pu

NUCLEAR REACTIONS 239Pu(d, p), E=11 MeV; measured proton-fragment time distributions, prompt, delayed fission σ; deduced fission probability.

doi: 10.1007/BF01408087
Citations: PlumX Metrics


1978HA05      Z.Phys. A285, 53 (1978)

D.Habs, H.Klewe-Nebenius, V.Metag, B.Neumann, H.J.Specht

Determination of the Fission Barrier of 232Pu from β-Delayed Fission And the Problem of the First Barrier

RADIOACTIVITY 232Am; measured T1/2; deduced EC/fission.

NUCLEAR REACTIONS 237Np(α, F), E=104 MeV; measured delayed fission activiy. 232Pu deduced barrier height.

doi: 10.1007/BF01410224
Citations: PlumX Metrics


1978HI09      Nukleonika 23, 347 (1978)

K.D.Hildenbrand, H.Freiesleben, F.Puhlhofer, W.F.W.Schneider, R.Bock, D.v.Harrach, H.J.Specht

Reactions Induced by 238U on 238U at 1766 MeV

NUCLEAR REACTIONS 238U(238U, X), E=1766 MeV; measured σ(E(A), Z, θ).


1978JU01      Nucl.Instrum.Methods 148, 283 (1978)

M.Just, D.Habs, V.Metag, H.J.Specht

A Position Sensitive Parallel Plate Avalanche Detector (PPAD) for Fission Fragments

RADIOACTIVITY, Fission 252Cf (SF); measured prompt, delayed fission yields.

NUCLEAR REACTIONS 239Pu(d, p), E=11 MeV; measured prompt, delayed fission yields.

doi: 10.1016/0029-554X(70)90180-1
Citations: PlumX Metrics


1978UL01      Nucl.Instrum.Methods 148, 369 (1978)

G.Ulfert, D.Habs, V.Metag, H.J.Specht

Lifetime Measurements of Nuclear Levels with the Charge Plunger Technique

NUCLEAR REACTIONS 239Pu(α, 3n), E=27, 33 MeV; measured recoil distance. 240Cm levels deduced T1/2, Q.

doi: 10.1016/0029-554X(70)90191-6
Citations: PlumX Metrics


1977HA01      Phys.Rev.Lett. 38, 387 (1977)

D.Habs, V.Metag, H.J.Specht, G.Ulfert

Quadrupole Moment of the 8-μs Fission Isomer in 239Pu

NUCLEAR REACTIONS 238U(α, 3n), E=33 MeV; measured charge distribution, activity by charge-plunger technique. 239Pu fission isomer deduced quadrupole moment.

doi: 10.1103/PhysRevLett.38.387
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1977HA37      Z.Phys. A283, 261 (1977)

D.Habs, V.Metag, J.Schukraft, H.J.Specht, C.O.Wene, K.D.Hildenbrand

Fission of 238U Induced by 136Xe for Energies Close to the Coulomb Barrier

NUCLEAR REACTIONS 238U(136Xe, F), E=4.5-5.9 MeV/nucleon; measured σ(θ); deduced reaction mechanism.

doi: 10.1007/BF01407207
Citations: PlumX Metrics


1977HI08      Phys.Rev.Lett. 39, 1065 (1977)

K.D.Hildenbrand, H.Freiesleben, W.F.W.Schneider, R.Bock, D.v.Harrach, H.J.Specht

Reaction between 238U and 238U at 7.42 MeV/Nucleon

NUCLEAR REACTIONS 238U(238U, X), E=7.42 MeV/nucleon; measured σ(A, Z); deduced upper limit σ for production of superheavy elements.

doi: 10.1103/PhysRevLett.39.1065
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1976GL01      Nucl.Phys. A256, 220 (1976)

P.Glassel, H.Rosler, H.J.Specht

Intermediate Structure in the 239Pu(d, pf) Reaction

NUCLEAR REACTIONS 239Pu(d, pF), E=12.5 MeV; measured σ(Ep, θ(F)). 240Pu deduced fission probability, second minimum levels J, π, second minimum level density.

doi: 10.1016/0375-9474(76)90105-6
Citations: PlumX Metrics


1974WE03      Nucl.Phys. A221, 414 (1974)

J.Weber, H.J.Specht, E.Konecny, D.Heunemann

Fragment Mass and Kinetic Energy Distribution in Isomeric Fission of 240Pu

RADIOACTIVITY 240mPu; measured fragment mass, kinetic energy distribution.

doi: 10.1016/0375-9474(74)90328-5
Citations: PlumX Metrics

Data from this article have been entered in the EXFOR database. For more information, access X4 dataset22071.


1973KO17      Phys.Lett. 45B, 329 (1973)

E.Konecny, H.J.Specht, J.Weber

Symmetric and Asymmetric Fission of Ac Isotopes Near the Fission Threshold

NUCLEAR REACTIONS 226Ra(3He, pF), (3He, dF), E=23.5 MeV; measured P(fragment)(θ), d(fragment)(θ). 227,228Ac deduced fission probability, fragment anisotropy(E).

doi: 10.1016/0370-2693(73)90047-6
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1972KO10      Nucl.Phys. A187, 426 (1972)

E.Konecny, H.J.Specht, J.Weber, H.Weigmann, R.L.Ferguson, P.Osterman, M.Waldschmidt, G.Siegert

Search for Conversion Electrons Populating the 236U Fission Isomer

NUCLEAR REACTIONS, Fission 235U(n, γF), E=thermal; measured (fragment)(ce)-coin, -delay; deduced upper limit for isomeric/prompt fission ratio.

doi: 10.1016/0375-9474(72)90586-6
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1972SP06      Phys.Lett. 41B, 43 (1972)

H.J.Specht, J.Weber, E.Konecny, D.Heunemann

Identification of a Rotational Band in the 240Pu Fission Isomer

RADIOACTIVITY, Fission 240Pu(SF) [from 238U(α, 2nγ); E=25 MeV]; measured I(ce), (α)(fragment)-delay, E(ce). 240mPu deduced levels, rotational band structure.

doi: 10.1016/0370-2693(72)90363-2
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