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NSR database version of May 24, 2024.

Search: Author = H.Keller

Found 80 matches.

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1998BO02      Eur.Phys.J. A 1, 15 (1998)

O.V.Bochkarev, L.V.Chulkov, P.Egelhof, H.Geissel, M.S.Golovkov, H.Irnich, Z.Janas, H.Keller, T.Kobayashi, G.Kraus, G.Munzenberg, F.Nickel, A.A.Ogloblin, A.Ozawa, A.Piechaczek, E.Roeckl, W.Schwab, K.Summerer, T.Suzuki, I.Tanihata, K.Yoshida

Evidence for a Neutron Skin in 20N

NUCLEAR REACTIONS C(20Mg, X), (20Na, X), (20Ne, X), (20F, X), (20O, X), (20N, X), E=950 MeV/nucleon; measured interaction, charge-changing σ; deduced projectile matter, charge radii. 20N deduced evidence for neutron skin.


1998SU06      Nucl.Phys. A630, 402c (1998)

T.Suzuki, H.Geissel, O.Bochkarev, L.Chulkov, M.Golovkov, N.Fukunishi, D.Hirata, H.Irnich, Z.Janas, H.Keller, T.Kobayashi, G.Kraus, G.Munzenberg, S.Neumaier, F.Nickel, A.Ozawa, A.Piechaczeck, E.Roeckl, W.Schwab, K.Summerer, K.Yoshida, I.Tanihata

Neutron Skin of Na Isotopes and an Application to the EOS

NUCLEAR STRUCTURE Na; analyzed mass radii; deduced neutron skin features. Implications for equation of state.

doi: 10.1016/S0375-9474(97)00778-1
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1998SU07      Nucl.Phys. A630, 661 (1998)

T.Suzuki, H.Geissel, O.Bochkarev, L.Chulkov, M.Golovkov, N.Fukunishi, D.Hirata, H.Irnich, Z.Janas, H.Keller, T.Kobayashi, G.Kraus, G.Munzenberg, S.Neumaier, F.Nickel, A.Ozawa, A.Piechaczeck, E.Roeckl, W.Schwab, K.Summerer, K.Yoshida, I.Tanihata

Nuclear Radii of Na and Mg Isotopes

NUCLEAR REACTIONS C(20Na, X), (21Na, X), (22Na, X), (23Na, X), (25Na, X), (26Na, X), (27Na, X), (28Na, X), (29Na, X), (30Na, X), (31Na, X), (32Na, X), (20Mg, X), (22Mg, X), (23Mg, X), (24Mg, X), (25Mg, X), (27Mg, X), (29Mg, X), (30Mg, X), (31Mg, X), (32Mg, X), (33Mg, X), E=950 MeV/nucleon; measured interaction σ. 20,21,22,23,25,26,27,28,29,30,31,32Na, 20,22,23,24,27,29,30,31,32Mg deduced rms radii, neutron, proton skin features. Shell model calculations.

doi: 10.1016/S0375-9474(97)00799-9
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1997BO09      Nucl.Phys. A616, 231c (1997)

C.Borcea, F.Carstoiu, F.Negoita, M.Lewitowicz, M.G.Saint-Laurent, R.Anne, D.Bazin, V.Borrel, J.M.Corre, Z.Dlouhy, A.Fomitchev, D.Guillemaud-Mueller, H.Keller, A.Kordyasz, S.Lukyanov, A.C.Mueller, Yu.Penionzhkevich, P.Roussel-Chomaz, N.Skobelev, O.Sorlin, O.Tarasov

8B Studied as a Secondary Beam at GANIL

NUCLEAR REACTIONS 28Si(8B, 7BeX), E ≈ 20-40 MeV/nucleon; 28Si(7Be, X), E ≈ 15-40 MeV/nucleon; measured reaction, break-up σ; deduced separate contributions from different reaction mechanisms. 8B deduced pigmy halo evidence.

doi: 10.1016/S0375-9474(97)00093-6
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1997CO21      Z.Phys. A358, 241 (1997)

R.Collatz, P.Kleinheinz, B.Rubio, J.L.Tain, M.Piiparinen, H.Keller, R.Kirchner, O.Klepper, E.Roeckl, D.Schardt

Gamow-Teller Strength from the β+ Decay of 66147Dy81

RADIOACTIVITY 147Dy(β+); measured Eγ, Iγ; deduced Gamow-Teller strength functions. 147Tb levels deduced feeding Iβ. Total absorption spectrometer.

doi: 10.1007/s002180050319
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1997CO24      Z.Phys. A359, 115 (1997)

R.Collatz, P.Kleinheinz, C.T.Zhang, H.Keller, R.Kirchner, O.Klepper, E.Roeckl

Gamma-Decay of the (27/2)- 0.6s E3-Isomer in 68151Er83

RADIOACTIVITY 151mEr(IT) [from 96Mo(58Ni, n2p), E=4.4 MeV/nucleon]; measured Eγ, Iγ, γγ-coin, I(ce). 151Er deduced levels, J, π, configurations. Other N=83 nuclei compared.

doi: 10.1007/s002180050375
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1997GR02      Phys.Rev. C55, 1126 (1997)

R.Grzywacz, R.Anne, G.Auger, C.Borcea, J.M.Corre, T.Dorfler, A.Fomichov, S.Grevy, H.Grawe, D.Guillemaud-Mueller, M.Huyse, Z.Janas, H.Keller, M.Lewitowicz, S.Lukyanov, A.C.Mueller, N.Orr, A.Ostrowski, Yu.Penionzhkevich, A.Piechaczek, F.Pougheon, K.Rykaczewski, M.G.Saint-Laurent, W.D.Schmidt-Ott, O.Sorlin, J.Szerypo, O.Tarasov, J.Wauters, J.Zylicz

New μ s Isomers in T(z) = 1 Nuclei Produced in the 112Sn(63A MeV) + (nat)Ni Reaction

NUCLEAR REACTIONS Ni(112Sn, X), E=63 MeV/nucleon; measured Eγ, Iγ, γ(fragment)-correlation; deduced evidence for 94mPd, 96mAg, 80mY, 98mCd, 102mSn. 94Pd, 96Ag deduced isomer T1/2. Magnetic spectrometer plus tof, energy loss, total kinetic energy measurements.

doi: 10.1103/PhysRevC.55.1126
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1997JA12      Nucl.Phys. A627, 119 (1997)

Z.Janas, A.Plochocki, J.Szerypo, R.Collatz, Z.Hu, H.Keller, R.Kirchner, O.Klepper, E.Roeckl, K.Schmidt, R.Bonetti, A.Guglielmetti, G.Poli, A.Piechaczek

Decay Studies of the Neutron-Deficient Isotopes 114-118Ba

RADIOACTIVITY 114,115,116Ba(β+p) [from 58,60Ni(58Ni, xn), E=3.5-4.3 MeV/nucleon]; 116,117,118Ba(β+p) [from 63Cu(58Ni, xnp), E=4.3-4.9 MeV/nucleon]; measured β-delayed Ep, Ip, Eγ, Iγ, γγ-coin, T1/2; deduced absolute branching ratios. Ge, Si, scintillator detectors, on-line mass separation.

NUCLEAR REACTIONS 58,60Ni(58Ni, xn), E=3.5-4.3 MeV/nucleon; 63Cu(58Ni, xnp), E=4.3-4.9 MeV/nucleon; measured Eγ, Iγ, γγ-coin; deduced production σ for 114,115,116,117,118Ba isotopes.

doi: 10.1016/S0375-9474(97)00505-8
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1997SC30      Nucl.Phys. A624, 185 (1997)

K.Schmidt, P.C.Divari, Th.W.Elze, R.Grzywacz, Z.Janas, I.P.Johnstone, M.Karny, H.Keller, R.Kirchner, O.Klepper, A.Plochocki, E.Roeckl, K.Rykaczewski, L.D.Skouras, J.Szerypo, J.Zylicz

Decay Properties of Very Neutron-Deficient Isotopes of Silver and Cadmium

RADIOACTIVITY 95Ag(β+), (EC) [from 58Ni(40Ca, 2np), E=4-4.5 MeV/nucleon]; 96Ag(β+), (EC) [from 60Ni(40Ca, 3np), E=4.1 MeV/nucleon]; 97Ag(β+), (EC) [from 60Ni(40Ca, 2np), E=4.1 MeV/nucleon]; 97Cd(β+), (EC) [from 60Ni(40Ca, 3n), E=4.2 MeV/nucleon]; measured Eγ, Iγ, γγ-, Xγ-coin, beta delayed Ep, Ip, pγ-coin; deduced log ft. 95,96,97Pd deduced levels, J, π. On-line mass separation, Ge, Si(Li) detectors.

NUCLEAR STRUCTURE 95,96,97Pd, 97Ag; calculated levels, Gamow-Teller transition strength. Shell model.

doi: 10.1016/S0375-9474(97)81834-9
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Data from this article have been entered in the XUNDL database. For more information, click here.


1997SU04      Nucl.Phys. A616, 286c (1997)

T.Suzuki, H.Geissel, O.Bochkarev, L.Chulkov, M.Golovkov, D.Hirata, H.Irnich, Z.Janas, H.Keller, T.Kobayashi, G.Kraus, G.Munzenberg, S.Neumaier, F.Nickel, A.Ozawa, A.Piechaczek, E.Roeckl, W.Schwab, K.Summerer, K.Yoshida, I.Tanihata

Matter Radii of Na and Mg Isotopes

NUCLEAR REACTIONS C(20Na, X), (21Na, X), (22Na, X), (23Na, X), (25Na, X), (26Na, X), (27Na, X), (28Na, X), (29Na, X), (30Na, X), (31Na, X), (32Na, X), (20Mg, X), (22Mg, X), (23Mg, X), (24Mg, X), (25Mg, X), (27Mg, X), (29Mg, X), (30Mg, X), (31Mg, X), (32Mg, X), (33Mg, X), E=950 MeV/nucleon; measured interaction σ. 32,31,30,29,28,27,26,25,23,22,21,20Na, 20,22,23,24,27,29,30,31,32Mg deduced effective rms radii, nucleon skin thickness related features.

doi: 10.1016/S0375-9474(97)00099-7
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1997SZ04      Z.Phys. A359, 117 (1997)

J.Szerypo, R.Grzywacz, Z.Janas, M.Karny, M.Pfutzner, A.Plochocki, K.Rykaczewski, J.Zylicz, M.Huyse, G.Reusen, J.Schwarzenberg, P.Van Duppen, A.Woehr, H.Keller, R.Kirchner, O.Klepper, A.Piechaczek, E.Roeckl, K.Schmidt, L.Batist, A.Bykov, V.Wittman, B.A.Brown

Decay Properties of Ground-State and Isomer of 103In

RADIOACTIVITY 103In(β+)(EC) [from 50Cr(58Ni, 2n3p), E=5.9 MeV/nucleon]; measured Eγ, Iγ, γγ-coin following decay; deduced log ft, Gamow-Teller strength. 103mIn(IT) [from 50Cr(58Ni, 2n3p), E=5.9 MeV/nucleon]; measured T1/2. 101In(β+) [from 50Cr(58Ni, 4n3p), E=5.9 MeV/nucleon]; measured Eγ, Iγ, γγ-coin following decay, T1/2. 103Cd deduced levels. Shell model calculations.

doi: 10.1007/s002180050376
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1997TR05      Nucl.Phys. A620, 191 (1997)

W.Trinder, E.G.Adelberger, B.A.Brown, Z.Janas, H.Keller, K.Krumbholz, V.Kunze, P.Magnus, F.Meissner, A.Piechaczek, M.Pfutzner, E.Roeckl, K.Rykaczewski, W.-D.Schmidt-Ott, M.Weber

Study of the β Decays of 37Ca and 36Ca

RADIOACTIVITY 37,36Ca(β+p) [from 9Be(40Ca, X), E=300 MeV/nucleon]; measured β-delayed Ep, Ip, Eγ, Iγ, βγ-, βγp-coin, T1/2. 37K deduced levels isospin mixing. 36K levels deduced J, π assignment nonvalidity. Ge, Si detectors. sd-shell model.

doi: 10.1016/S0375-9474(97)00163-2
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1996CH24      Nucl.Phys. A603, 219 (1996)

L.Chulkov, G.Kraus, O.Bochkarev, P.Egelhof, H.Geissel, M.Golovkov, H.Irnich, Z.Janas, H.Keller, T.Kobayashi, G.Munzenberg, F.Nickel, A.Ogloblin, A.Ozawa, S.Patra, A.Piechaczek, E.Roeckl, W.Schwab, K.Summerer, T.Suzuki, I.Tanihata, K.Yoshida

Interaction Cross Sections and Matter Radii of A = 20 Isobars

NUCLEAR REACTIONS 12C(20Ne, X), (20O, X), (20F, X), (20Na, X), (20Mg, X), E ≤ 1 GeV/nucleon; measured interaction σ; deduced matter rms radii. 20O, 20Ne, 20F, 20Na, 20Mg deduced nucleon distribution rms radii differences. Secondary beams from 9Be(36Ar, X), (40Ar, X) reactions.

doi: 10.1016/0375-9474(96)00160-1
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1996NE06      Phys.Rev. C54, 1787 (1996)

F.Negoita, C.Borcea, F.Carstoiu, M.Lewitowicz, M.G.Saint-Laurent, R.Anne, D.Bazin, J.M.Corre, P.Roussel-Chomaz, V.Borrel, D.Guillemaud-Mueller, H.Keller, A.C.Mueller, F.Pougheon, O.Sorlin, S.Lukyanov, Yu.Penionzhkevich, A.Fomichev, N.Skobelev, O.Tarasov, Z.Dlouhy, A.Kordyasz

8B Proton Halo Via Reaction and Breakup Cross Section Measurements

NUCLEAR REACTIONS, ICPND 28Si(8B, X), (7Be, X), E=10-40 MeV/nucleon; measured reaction σ(E). Si(8B, X), (7Be, X), E=40 MeV/nucleon; measured σ for X=Li, He. Si(8B, 7Be), E=10-40 MeV/nucleon; measured aborption, diffraction dissociation, total breakup σ, breakup fragment longitudinal momentum distribution FWHM. 8B deduced proton halo radius. Microscopic optical potentials, Glauber, Serber models.

doi: 10.1103/PhysRevC.54.1787
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1996SK04      Bull.Rus.Acad.Sci.Phys. 60, 123 (1996)

N.K.Skobelev, S.M.Lukyanov, Yu.E.Penionzhkevich, O.B.Tarasov, A.S.Fomichev, R.Anne, D.Bazin, J.-M.Corre, M.Lewitowicz, P.Roussel-Chomaz, M.G.Saint-Laurent, V.Borrel, D.Guillemaud-Mueller, H.Keller, A.C.Muller, O.Sorlin, C.Borcea, F.Carstoiu, Z.Dlouhy, I.Pecina, A.Kordyasz

Quasielastic Scattering of 40-MeV/Nucleon 7Be and 8B from 12C Nuclei

NUCLEAR REACTIONS 12C(7Be, 7Be), (7Be, X), (8B, 8B), (8B, X), E=40 MeV/nucleon; measured elastic, quasielastic σ(θ). 7Be, 8B, 12C deduced nucleon density distributions rms radii. Secondary 7,8Be beams from 9Be(12C, X) reaction.


1995BA25      Z.Phys. A351, 149 (1995)

L.Batist, A.Bykov, F.Moroz, V.Wittmann, G.D.Alkhazov, H.Keller, R.Kirchner, O.Klepper, E.Roeckl, M.Huyse, P.Van Duppen, G.Reusen, A.Plochocki, M.Pfutzner, K.Rykaczewski, J.Szerypo, J.Zylicz, B.A.Brown

Gamow-Teller Strength Distribution in Beta-Decay of 100Ag from Total-Absorption Gamma Spectrometry

RADIOACTIVITY 100Ag(EC), (β+); measured Gamow-Teller transition strength distribution in 100Pd. Total absorption γ-spectrometry. Model comparison.

doi: 10.1007/BF01289525
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1995GR14      Phys.Lett. 355B, 439 (1995)

R.Grzywacz, R.Anne, G.Auger, D.Bazin, C.Borcea, V.Borrel, J.M.Corre, T.Dorfler, A.Fomichov, M.Gaelens, D.Guillemaud-Mueller, R.Hue, M.Huyse, Z.Janas, H.Keller, M.Lewitowicz, S.Lukyanov, A.C.Mueller, Yu.Penionzhkevich, M.Pfutzner, F.Pougheon, K.Rykaczewski, M.G.Saint-Laurent, K.Schmidt, W.-D.Schmidt-Ott, O.Sorlin, J.Szerypo, O.Tarasov, J.Wauters, J.Zylicz

Identification of μs-Isomers Produced in the Fragmentation of a 112Sn Beam

NUCLEAR REACTIONS Ni(112Sn, X), E=58, 63 MeV/nucleon; compiled, reviewed small T1/2 isomer production data; deduced evidence for 66mAs. Fragment separator combined with gamma-detection array.

doi: 10.1016/0370-2693(95)00501-B
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1995GU01      Nucl.Phys. A583, 867c (1995)

A.Guglielmetti, B.Blank, R.Bonetti, Z.Janas, H.Keller, R.Kirchner, O.Klepper, A.Piechaczek, A.Plochocki, G.Poli, P.B.Price, E.Roeckl, K.Schmidt, J.Szerypo, A.J.Westphal

Production of 114Ba in 58Ni Reactions and Detection of Its Cluster Radioactivity

NUCLEAR REACTIONS 63Cu, 58Ni(58Ni, X), E=4.9 MeV/nucleon; measured charged particle spectra following residuals decay; deduced 114,115,116,117,118Ba decay characteristics.

RADIOACTIVITY 115,116,117,118Ba(α); 114Ba(α), (12C) [from 63Cu, 58Ni(58Ni, X), E=4.9 MeV/nucleon]; measured Eα, decay T1/2. Model comparison.

doi: 10.1016/0375-9474(94)00776-J
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1995GU10      Phys.Rev. C52, 740 (1995)

A.Guglielmetti, R.Bonetti, G.Poli, P.B.Price, A.J.Westphal, Z.Janas, H.Keller, R.Kirchner, O.Klepper, A.Piechaczek, E.Roeckl, K.Schmidt, A.Plochocki, J.Szerypo, B.Blank

Identification of the New Isotope 114Ba and Search for Its α and Cluster Radioactivity

NUCLEAR REACTIONS, ICPND 58Ni(58Ni, 2n), E=4.2 MeV/nucleon; measured residual production σ.

RADIOACTIVITY 114Ba(β-), (α), (12C) [from 58Ni(58Ni, 2n), E=4.2 MeV/nucleon]; measured total β-decay T1/2, α-, 12C-decay T1/2 lower limit.

doi: 10.1103/PhysRevC.52.740
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1995JA16      Phys.Scr. T56, 262 (1995)

Z.Janas, H.Keller, R.Kirchner, O.Klepper, A.Piechaczek, E.Roeckl, K.Schmidt, M.Huyse, J.von Schwarzenberg, J.Szerypo, P.Van Duppen, L.Vermeeren, F.Albus, H.-J.Kluge, G.Passler, F.P.Scheerer, N.Trautmann, V.N.Fedoseyev, V.I.Mishin, R.Grzywacz, A.Plochocki, K.Rykaczewski, J.Zylicz

Beta Decay of the New Isotope 101Sn

RADIOACTIVITY 101Sn(β+p) [from 50Cr(58Ni, 5n2p), E not given]; measured β-delayed Ep, Ip, T1/2. On-line mass separator, chemically selective ion sources.

doi: 10.1088/0031-8949/1995/T56/044
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1995KE05      Z.Phys. A352, 1 (1995)

H.Keller, R.Kirchner, B.Rubio, J.L.Tain, Th.Dorfler, W.D.Schmidt-Ott, E.Roeckl

Beta-Decay Energy and Atomic Mass of 148Tb

RADIOACTIVITY 148Tb(β+), (EC) [from 94Zr(58Ni, n3p)]; 148Dy(β+) [from 94Zr(58Ni, 2n2p)]; measured β spectra, βγ(t). 148Tb levels deduced Q(EC), ground state mass excess.

doi: 10.1007/BF01292750
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1995KR04      Z.Phys. A351, 11 (1995)

K.Krumbholz, W.-D.Schmidt-Ott, T.Hild, V.Kunze, F.Meissner, C.Wennemann, H.Keller, R.Kirchner, O.Klepper, E.Roeckl, D.Schardt, K.Rykaczewski

Evidence for the I(π) = 8-, K = 8 Isomeric State in 184Hf

NUCLEAR REACTIONS W(136Xe, X), E=11.4 MeV/nucleon; measured Eβ, Iβ, Eγ, Iγ, βγ-, γγ-coin.

RADIOACTIVITY 184Lu(β-) [from W(136Xe, X), E=11.4 MeV/nucleon]; measured Eβ, Iβ, Eγ, Iγ, βγ-, γγ-coin. 184Lu deduced T1/2. 184Hf deduced levels, Eγ, relative Iγ, T1/2.

doi: 10.1007/BF01292780
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1995LE08      Nucl.Phys. A583, 857c (1995)

M.Lewitowicz, R.Anne, G.Auger, C.Borcea, J.M.Corre, T.Dorfler, R.Grzywacz, D.Guillemaud-Mueller, M.Huyse, H.Keller, S.Lukyanov, A.C.Mueller, Yu.Penionzhkevich, M.Pfutzner, F.Pougheon, K.Rykaczewski, M.G.Saint-Laurent, W.D.Schmidt-Ott, O.Sorlin, O.Tarasov, J.Zylicz

Observation of 100Sn

NUCLEAR REACTIONS Ni(112Sn, X), E=63 MeV/nucleon; measured fragment mass spectra; deduced evidence for 100Sn, 92,93Pd, 99In, 104Sb.

doi: 10.1016/0375-9474(94)00774-H
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1995LE14      Nucl.Phys. A588, 197c (1995)

M.Lewitowicz, R.Anne, G.Auger, D.Bazin, C.Borcea, V.Borrel, J.M.Corre, T.Dorfler, A.Fomichov, R.Grzywacz, D.Guillemaud-Mueller, R.Hue, M.Huyse, Z.Janas, H.Keller, S.Lukyanov, A.C.Mueller, Yu.Penionzhkevich, M.Pfutzner, F.Pougheon, K.Rykaczewski, M.G.Saint-Laurent, K.Schmidt, W.D.Schmidt-Ott, O.Sorlin, J.Szerypo, O.Tarasov, J.Wauters, J.Zylicz

Identification of 100Sn and Other Proton Drip-Line Nuclei in the Reaction 112Sn(63 MeV/nucl.)+(Nat)Ni

NUCLEAR REACTIONS Ni(112Sn, X), E=63 MeV/nucleon; measured (fragment)γ(t), fragment mass distribution; deduced evidence for 103,104Sb, 98In, 91Pd, 89Rh, 87Ru, 66mAs.

doi: 10.1016/0375-9474(95)00139-R
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1995PE09      Phys.Rev. C52, 191 (1995)

I.Pecina, R.Anne, D.Bazin, C.Borcea, V.Borrel, F.Carstoiu, J.M.Corre, Z.Dlouhy, A.Fomitchev, D.Guillemaud-Mueller, H.Keller, A.Kordyasz, M.Lewitowicz, S.Lukyanov, A.C.Mueller, Yu.Penionzhkevich, P.Roussel-Chomaz, M.G.Saint-Laurent, N.Skobelev, O.Sorlin, O.Tarasov

Quasielastic Scattering of 8B and 7Be on 12C at 40 MeV/nucleon

NUCLEAR REACTIONS 12C(8B, 8B), (8B, X), (7Be, 7Be), E=40 MeV/nucleon; 12C(12C, 12C), E=20 MeV/nucleon; measured σ(θ); deduced optical model parameters, σ(8B(12C, X)7Be). 8B deduced proton halo size.

doi: 10.1103/PhysRevC.52.191
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1995PF01      Nucl.Phys. A581, 205 (1995)

M.Pfutzner, A.Plochocki, K.Rykaczewski, J.Szerypo, J.Zylicz, H.Keller, R.Kirchner, O.Klepper, E.Roeckl, D.Schardt, M.Huyse, G.Reusen, P.Van Duppen, B.A.Brown

The Gamow-Teller Decay of 105Sn to Three-Particle States in 105In

RADIOACTIVITY 105Sn(EC), (β+) [from 50Cr(50Ni, n2p), E=5.3 MeV/nucleon, mass separation]; measured Eγ, Iγ, γγ-coin, T1/2. 105In deduced levels, Gamow-Teller transition strength distribution. Enriched target. Ge detectors.

NUCLEAR STRUCTURE 105Sn, 105In; calculated Gamow-Teller transition strength distribution. Shell model.

doi: 10.1016/0375-9474(94)00330-P
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1995PI03      Nucl.Phys. A584, 509 (1995)

A.Piechaczek, M.F.Mohar, R.Anne, V.Borrel, B.A.Brown, J.M.Corre, D.Guillemaud-Mueller, R.Hue, H.Keller, S.Kubono, V.Kunze, M.Lewitowicz, P.Magnus, A.C.Mueller, T.Nakamura, M.Pfutzner, E.Roeckl, K.Rykaczewski, M.G.Saint-Laurent, W.-D.Schmidt-Ott, O.Sorlin

Beta-Decay of 20Mg

RADIOACTIVITY 20Mg(β+p) [from Ni(24Mg, X), E=95 MeV/nucleon]; measured β-delayed Ep, Ip, γ spectra. 20Na levels deduced J, π, β-decay feeding upper limit, Gamow-Teller transition strength.

doi: 10.1016/0375-9474(94)00791-K
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1995RY03      Phys.Rev. C52, R2310 (1995)

K.Rykaczewski, R.Anne, G.Auger, D.Bazin, C.Borcea, V.Borrel, J.M.Corre, T.Dorfler, A.Fomichov, R.Grzywacz, D.Guillemaud-Mueller, R.Hue, M.Huyse, Z.Janas, H.Keller, M.Lewitowicz, S.Lukyanov, A.C.Mueller, Yu.Penionzhkevich, M.Pfutzner, F.Pougheon, M.G.Saint-Laurent, K.Schmidt, W.D.Schmidt-Ott, O.Sorlin, J.Szerypo, O.Tarasov, J.Wauters, J.Zylicz

Identification of New Nuclei at and Beyond the Proton Drip Line Near the Doubly Magic Nucleus 100Sn

NUCLEAR REACTIONS Ni(112Sn, X), E=58, 62 MeV/nucleon; measured heavy fragments energy loss, total kinetic energy, Eγ, Iγ; deduced evidence for 103,104Sb, 98In, 91Pd, 89Rh, 87Ru. Other fragments atomic, mass numbers, charge state deduced. Tof.

doi: 10.1103/PhysRevC.52.R2310
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1995SO03      Nucl.Phys. A583, 763c (1995)

O.Sorlin, D.Guillemaud-Mueller, R.Anne, L.Axelsson, D.Bazin, W.Bohmer, V.Borrel, Y.Jading, H.Keller, K.-L.Kratz, M.Lewitowicz, S.M.Lukyanov, T.Mehren, A.C.Mueller, Yu.E.Penionzhkevich, F.Pougheon, M.G.Saint-Laurent, V.S.Salamatin, S.Shoedder, A.Wohr

Beta-Decay Studies of Far from Stability Nuclei Near N = 28

RADIOACTIVITY 43P, 42,44,45S, 44,45,46Cl, 47Ar(β-n) [from 64Ni(48Ca, X), E=60 MeV/nucleon]; measured β-decay T1/2, β-delayed neutron emission probabilities.

doi: 10.1016/0375-9474(94)00755-C
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1995SU18      Phys.Rev.Lett. 75, 3241 (1995)

T.Suzuki, H.Geissel, O.Bochkarev, L.Chulkov, M.Golovkov, D.Hirata, H.Irnich, Z.Janas, H.Keller, T.Kobayashi, G.Kraus, G.Munzenberg, S.Neumaier, F.Nickel, A.Ozawa, A.Piechaczek, E.Roeckl, W.Schwab, K.Summerer, K.Yoshida, I.Tanihata

Neutron Skin of Na Isotopes Studied Via Their Interaction Cross Sections

NUCLEAR REACTIONS C(20Na, X), (21Na, X), (22Na, X), (23Na, X), (25Na, X), (26Na, X), (27Na, X), (28Na, X), (29Na, X), (30Na, X), (31Na, X), (32Na, X), E=950 MeV/nucleon; measured interaction σ. 20,21,22,23,25,26,27,28,29,30,31,32Na deduced effective rms radii, proton-neutron separation energy difference.

doi: 10.1103/PhysRevLett.75.3241
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1995SZ01      Nucl.Phys. A584, 221 (1995)

J.Szerypo, M.Huyse, G.Reusen, P.Van Duppen, Z.Janas, H.Keller, R.Kirchner, O.Klepper, A.Piechaczek, E.Roeckl, D.Schardt, K.Schmidt, R.Grzywacz, M.Pfutzner, A.Plochocki, K.Rykaczewski, J.Zylicz, G.Alkhazov, L.Batist, A.Bykov, V.Wittmann, B.A.Brown

Beta Decay of Neutron-Deficient Even-Mass Indium Isotopes: Evidence for population of highly-excited states in the Cadmium-daughter nuclei

RADIOACTIVITY 100,102,104In(EC), (β+) [from 50Cr(58Ni, xn3p), E=5.6 MeV/nucleon]; measured Eγ, Iγ, β-delayed Ep, Ip, Eβ, pγ-, βγ-, γγ-coin, T1/2; deduced B(GT). 102Cd deduced levels. Ge, Si detectors, on-line mass separation.

doi: 10.1016/0375-9474(94)00513-M
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1995TR02      Phys.Lett. 348B, 331 (1995)

W.Trinder, E.G.Adelberger, B.A.Brown, Z.Janas, H.Keller, K.Krumbholz, V.Kunze, P.Magnus, F.Meissner, A.Piechaczek, M.Pfutzner, E.Roeckl, K.Rykaczewski, W.-D.Schmidt-Ott, M.Weber

Gamow-Teller Strength in the β-Decay of 36Ca

RADIOACTIVITY 36Ca(β+p); measured βγ-coin, β+-delayed proton spectra, T1/2; deduced log ft, Gamow-Teller transition strength.

doi: 10.1016/0370-2693(95)00130-D
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1995TR03      Phys.Lett. 349B, 267 (1995)

W.Trinder, E.G.Adelberger, Z.Janas, H.Keller, K.Krumbholz, V.Kunze, P.Magnus, F.Meissner, A.Piechaczek, M.Pfutzner, E.Roeckl, K.Rykaczewski, W.-D.Schmidt-Ott, M.Weber

β-Decay of 37Ca

RADIOACTIVITY 37Ca(β+p); measured βγ-coin, T1/2; deduced Gamow-Teller transition strength. 37K levels deduced Γγ/Γp. Comparison with other data.

doi: 10.1016/0370-2693(95)00282-P
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1994KE06      Z.Phys. A348, 61 (1994)

H.Keller, R.Anne, D.Bazin, R.Bimbot, M.J.G.Borge, J.M.Corre, S.Dogny, H.Emling, D.Guillemaud-Mueller, P.G.Hansen, P.Hornshoj, F.Humbert, P.Jensen, B.Jonson, M.Lewitowicz, A.C.Mueller, R.Neugart, T.Nilsson, G.Nyman, F.Pougheon, M.G.Saint-Laurent, G.Schrieder, O.Sorlin, O.Tengblad, K.Wilhelmsen Rolander

Search for Forbidden β-Decay of the Drip Line Nucleus 12Be

RADIOACTIVITY 12Be(β-) [from 9Be(18O, X), E=63 MeV/nucleon]; measured βγ-coin, T1/2; deduced ft. 12B levels deduced β-branching ratio.

doi: 10.1007/BF01291655
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1994KE07      Z.Phys. A348, 67 (1994)

H.Keller, V.Borrel, D.Guillemaud-Mueller, A.C.Mueller, F.Pougheon, O.Sorlin, P.Baumann, F.Didierjean, A.Huck, A.Knipper, G.Walter, R.Anne, D.Bazin, M.Lewitowicz, M.G.Saint-Laurent, G.Marguier

Production of Isomeric 44V and 42Sc in High Energy Heavy Ion Reactions

RADIOACTIVITY 44m,44V(β+); 42m,42Sc(β+) [from Ni(58Ni, X), E=69 MeV/nucleon]; measured βγ-coin; deduced isomer to ground state production ratio.

NUCLEAR REACTIONS, ICPND Ni(58Ni, X)44V/44mV/42Sc/42mSc, E=69 MeV/nucleon; measured βγ-coin; deduced isomer to ground state production ratio.

doi: 10.1007/BF01291658
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1994LE27      Phys.Lett. 332B, 20 (1994)

M.Lewitowicz, R.Anne, G.Auger, D.Bazin, C.Borcea, V.Borrel, J.M.Corre, T.Dorfler, A.Fomichov, R.Grzywacz, D.Guillemaud-Mueller, R.Hue, M.Huyse, Z.Janas, H.Keller, S.Lukyanov, A.C.Mueller, Yu.Penionzhkevich, M.Pfutzner, F.Pougheon, K.Rykaczewski, M.G.Saint-Laurent, K.Schmidt, W.D.Schmidt-Ott, O.Sorlin, J.Szerypo, O.Tarasov, J.Wauters, J.Zylicz

Identification of the Doubly-Magic Nucleus 100Sn in the Reaction 112Sn + (nat)Ni at 63 MeV/Nucleon

NUCLEAR REACTIONS Ni(112Sn, X)100Sn, E=63 MeV/nucleon; measured fragment Z vs mass to charge ratio; deduced evidence for 100Sn. Production σ lower limit given.

doi: 10.1016/0370-2693(94)90852-4
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1994ME13      Z.Phys. A349, 13 (1994)

R.Menegazzo, P.Kleinheinz, R.Collatz, H.Guven, J.Styczen, D.Schardt, H.Keller, O.Klepper, G.Walter, A.Huck, G.Marguier, J.Blomqvist, and the ISOLDE Collaboration

The N = 83 Nucleus 149Dy from Gamow-Teller Decay of Its (11/2)- and (1/2)+ 149Ho Parents

RADIOACTIVITY 149Ho(β+) [from 94,95Mo(58Ni, X), E=5-4 MeV/nucleon]; measured γγ-, γ(X-ray)-coin; deduced (1/2)+, (11/2)- level decay, T1/2. 149Dy deduced Gamow-Teller decay strength, levels, configuration.

doi: 10.1007/BF01296328
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1994UZ01      Phys.Lett. 331B, 280 (1994)

J.L.Uzureau, P.Delbourgo-Salvador, T.Ethvignot, J.E.Sauvestre, J.Trochon, B.Bonnereau, M.Szmigiel, R.Anne, D.Bazin, J.M.Corre, M.Lewitowicz, M.G.St Laurent, R.Bimbot, H.Keller, A.C.Mueller, O.Sorlin

Production of Pure 42mSc Isomeric Beam

NUCLEAR REACTIONS 12C(40Ca, 10B)42Sc/42mSc, E=30 MeV/nucleon; measured γ spectra following 42mSc decay; deduced residual (as secondary beam) intensity.

RADIOACTIVITY 42mSc(β+) [from 12C(40Ca, 10B), E=30 MeV/nucleon]; measured Eγ, Iγ. Source as secondary beam.

doi: 10.1016/0370-2693(94)91052-9
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1994WE02      Z.Phys. A347, 185 (1994)

Ch.Wennemann, W.-D.Schmidt-Ott, T.Hild, K.Krumbholz, V.Kunze, F.Meissner, H.Keller, R.Kirchner, E.Roeckl

Investigation of New Neutron-Rich Gold Isotopes 203Au and 205Au

RADIOACTIVITY 203,205Au(β-) [from W(208Pb, X), E=11.4 MeV/nucleon]; measured β-delayed Eγ, Iγ, βγ-coin; deduced Q. 203,205Hg deduced levels, J, π. Model comparison.

NUCLEAR REACTIONS, ICPND W(208Pb, X)203Au/205Au, E=11.4 MeV/nucleon; measured β-delayed Eγ, Iγ, βγ-coin; deduced residuals production yields.

doi: 10.1007/BF01292375
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1994WE14      Nucl.Phys. A578, 659 (1994)

M.Weber, C.Donzaud, J.P.Dufour, H.Geissel, A.Grewe, D.Guillemaud-Mueller, H.Keller, M.Lewitowicz, A.Magel, A.C.Mueller, G.Munzenberg, F.Nickel, M.Pfutzner, A.Piechaczek, M.Pravikoff, E.Roeckl, K.Rykaczewski, M.G.Saint-Laurent, I.Schall, C.Stephan, K.Summerer, L.Tassan-Got, D.J.Vieira, B.Voss

Longitudinal Momenta and Production Cross-Sections of Isotopes Formed by Fragmentation of 500 A x MeV 86Kr Beam

NUCLEAR REACTIONS 9Be, Cu, Ta(86Kr, X), E=500 MeV/nucleon; measured fragment longitudinal momentum distribution, production σ for mass 10-90; deduced 78Ni production σ. Semi-empirical, geometrical abrasion, intranuclear-cascade models.

doi: 10.1016/0375-9474(94)90766-8
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1993BO14      Z.Phys. A345, 171 (1993)

U.Bosch-Wicke, W.-D.Schmidt-Ott, K.Rykaczewski, K.Becker, T.Hild, H.Keller, V.Kunze, F.Meissner, R.Kirchner, A.Piechaczek, E.Roeckl

Spectroscopic Investigations of 179Yb-Decay Including a ms-Isomer in 179Lu

RADIOACTIVITY 179Yb(β-) [from Re(136Xe, X), E=11.6 MeV/nucleon; W(197Au, X), E=11.4 MeV/nucleon]; measured Eγ, Iγ, β-spectra, βγ-, γγ-, γ(X-ray)-coin. 179Lu deduced isomer, T1/2, decay features.


1993KE04      Phys.Rev. C47, 2422 (1993)

H.Keller

Atomic Masses Near 146Gd: Evidence for a systematic deviation between experiment and mass formulas

NUCLEAR STRUCTURE Z=55-80; analyzed proton separation energies. Z=65-85; analyzed mass values; deduced systematic deviations between observed, calculated masses.

doi: 10.1103/PhysRevC.47.2422
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1993LE30      Nouvelles de GANIL 48, 7 (1993)

M.Lewitowicz, R.Anne, G.Auger, D.Bazin, M.G.Saint-Laurent, R.Grzywacz, M.Pfutzner, K.Rykaczewski, J.Zylicz, S.Lukyanov, A.Fomichov, Y.Penionzhkevich, O.Tarasov, V.Borrel, D.Guillemaud-Mueller, A.C.Mueller, H.Keller, O.Sorlin, F.Pougheon, M.Huyse, T.Pluym, J.Szerypo, J.Wauters, C.Borcea, K.Schmidt, Z.Janas

Towards 100Sn

NUCLEAR REACTIONS Ni(112Sn, X)Pd/Ag/Cd/In/Sn/Sb/Te, E=58 MeV/nucleon; measured reaction products. 101,102,103,104,105,106,107,108,109Sn; deduced new isotopes. LISE3 spectrometer at GANIL.


1992GE09      Nucl.Instrum.Methods Phys.Res. B70, 286 (1992)

H.Geissel, P.Armbruster, K.H.Behr, A.Brunle, K.Burkard, M.Chen, H.Folger, B.Franczak, H.Keller, O.Klepper, B.Langenbeck, F.Nickel, E.Pfeng, M.Pfutzner, E.Roeckl, K.Rykaczewski, I.Schall, D.Schardt, C.Scheidenberger, K.-H.Schmidt, A.Schroter, T.Schwab, K.Summerer, M.Weber, G.Munzenberg, T.Brohm, H.-G.Clerc, M.Fauerbach, J.-J.Gaimard, A.Grewe, E.Hanelt, B.Knodler, M.Steiner, B.Voss, J.Weckenmann, C.Ziegler, A.Magel, H.Wollnik, J.P.Dufour, Y.Fujita, D.J.Vieira, B.Sherrill

The GSI Projectile Fragment Separator (FRS): A versatile magnetic system for relativistic heavy ions

doi: 10.1016/0168-583X(92)95944-M
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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
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1992WE04      Z.Phys. A343, 67 (1992)

M.Weber, C.Donzaud, J.P.Dufour, H.Geissel, A.Grewe, D.Guillemaud-Mueller, H.Keller, M.Lewitowicz, A.Magel, A.C.Mueller, G.Munzenberg, F.Nickel, M.Pfutzner, A.Piechaczek, M.Pravikoff, E.Roeckl, K.Rykaczewski, M.G.Saint-Laurent, I.Schall, C.Stephan, K.Summerer, L.Tassan-Got, D.J.Vieira, B.Voss

New Neutron-Rich Isotopes in the Scandium-to-Nickel Region, Produced by Fragmentation of a 500 MeV/u 86Kr Beam

NUCLEAR REACTIONS 9Be(86Kr, X)58Ti/61V/63Cr/66Mn/69Fe/71Co, E=500 MeV/nucleon; measured residue, neighboring nuclei production σ. Zero-degree magnetic spectrometer, empirical parametrization of data.

doi: 10.1007/BF01291599
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1991KE06      Nucl.Instrum.Methods Phys.Res. A300, 67 (1991)

H.Keller, R.Kirchner, O.Klepper, E.Roeckl, D.Schardt, R.S.Simon, P.Kleinheinz, C.F.Liang, P.Paris

A Summation-Free β+-Endpoint Spectrometer

RADIOACTIVITY 149mTb [from 94,95Mo(58Ni, X), E=5.3 MeV/nucleon]; measured β+γ-coin; deduced β+-endpoint energy. Summation-free β+-endpoint spectrometer.

doi: 10.1016/0168-9002(91)90707-W
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1991KE08      Z.Phys. A339, 355 (1991)

H.Keller, R.Barden, R.Kirchner, O.Klepper, E.Roeckl, D.Schardt, I.S.Grant, A.Plochocki, K.Rykaczewski, J.Szerypo, J.Zylicz, and the ISOLDE Collaboration

Q(EC) Value and Gamow-Teller Strength of the 102Cd EC/β+ Decay

RADIOACTIVITY 102Cd [from 92Mo(16O, X), 50Cr(58Ni, X), E=9.2, 5.3 MeV/nucleon, respectively; Sn(p, X), E=600 MeV]; measured Eγ, Iγ, I(ce), γ(X-ray)-coin, γγ-coin; deduced T1/2, Q(EC). 102Ag deduced levels, J, π, ICC, Gamow-Teller transition strength.

doi: 10.1007/BF01560637
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1991KE11      Z.Phys. A340, 363 (1991)

H.Keller, R.Kirchner, O.Klepper, E.Roeckl, D.Schardt, R.S.Simon, P.Kleinheinz, R.Menegazzo, C.F.Liang, P.Paris, K.Rykaczewski, J.Zylicz

β+-Endpoint Measurements Near 100Sn and 146Gd

RADIOACTIVITY 104Sn, 147Tb, 148,149Dy, 149Ho, 150Er, 151Tm(β+); measured γ-spectra, Eβ; deduced Q(EC). 104Sn deduced mass excess. Other nuclei discussed.

doi: 10.1007/BF01290323
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1991SZ03      Nucl.Phys. A528, 203 (1991)

J.Szerypo, D.Bazin, B.A.Brown, D.Guillemaud-Mueller, H.Keller, R.Kirchner, O.Klepper, D.Morrissey, E.Roeckl, D.Schardt, B.Sherrill

The Beta Decay of 48Mn Improved Data on Gamow-Teller Quenching

RADIOACTIVITY 48Mn [from 12C(40Ca, 3np)]; measured T1/2, β-delayed Eγ, Iγ, β-delayed Ep, Ip, γγ-, pγ-coin; deduced log ft. 48Cr deduced levels, Fermi and Gamow-Teller transition strength. Shell-model calculations. Ge, surface-barrier Si detectors, on-line mass separation.

doi: 10.1016/0375-9474(91)90424-5
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1990GU28      Z.Phys. D17, 181 (1990)

G.H.Guthohrlein, H.P.Keller

Doppler-Free Laserspectroscopic Investigations of Hyperfine Structure in the Atomic Cobalt Spectrum

NUCLEAR MOMENTS 59Co; measured hfs; deduced spectroscopic quadrupole moment. Doppler-free laser spectroscopy.


1988GU06      J.Phys.(London) B21, 2353 (1988)

G.H.Guthohrlein, H.P.Keller

Hyperfine-Structure Investigations in the Co I Spectrum

NUCLEAR MOMENTS 59Co; measured hfs; deduced hyperfine constants. Doppler limited optogalvanic spectroscopy.

doi: 10.1088/0953-4075/21/12/020
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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.


1987KO41      Nucl.Instrum.Methods Phys.Res. A257, 244 (1987)

R.Kotte, H.-J.Keller, H.-G.Ortlepp, F.Stary

Bragg Peak Spectroscopy of Low-Energy Heavy Ions

RADIOACTIVITY 210Po, 241Am(α); measured Eα. Ionization chambers.

ATOMIC PHYSICS 197Au(12C, 12C), (16O, 16O), (35Cl, 35Cl), (28Si, 28Si), (32S, 32S), (79Br, 79Br), E=22.75-36 MeV; measured Bragg peak height vs Z, energy distribution, Z resolution vs energy loss. Ionization chamber.

doi: 10.1016/0168-9002(87)90743-1
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1987PR06      Nucl.Phys. A472, 381 (1987)

H.Prade, W.Enghardt, I.Dioszegi, L.Kaubler, H.-J.Keller, F.Stary, G.Winter

In-Beam Investigations and Structure Studies of Multiparticle Excitations in the N = 82, 83 Nuclei 138,139Ba

NUCLEAR REACTIONS 136Xe(α, 2n), (α, n), E=20, 22, 24, 27 MeV; measured Eγ, Iγ, γγ-coin, σ(E, Eγ, θγ), γ-ray linear polarization, Doppler shift, γ(t). 138,139Ba deduced levels, J, π, T1/2, γ-multipolarity, δ. Enriched 136Xe target. Shell-model, particle-core coupling calculations.

doi: 10.1016/0375-9474(87)90039-X
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1986EN01      Nucl.Phys. A449, 417 (1986)

W.Enghardt, L.Kaubler, H.Prade, H.-J.Keller, F.Stary

In-Beam Study of Multiparticle Excitations in the Semi-Magic Nucleus 140Ce

NUCLEAR REACTIONS 138Ba(α, 2nγ), E=20, 22, 24, 27 MeV; measured Eγ, Iγ, γγ-coin, σ(Eα, Eγ, θγ), γ linear polarization. 140Ce deduced levels, J, π, T1/2, γ-multipolarity, δ. Enriched 138Ba target, Ge(Li) detectors. Shell-model, particle-core coupling calculations.

doi: 10.1016/0375-9474(86)90229-0
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1986EN06      Ann.Phys.(Leipzig) 43, 424 (1986)

W.Enghardt, H.Prade, H.U.Jager, L.Kaubler, H.-J.Keller, F.Stary, L.K.Kostov

Microscopic Structure of Semimagic Nuclei with 82 Neutrons or 50 Protons

NUCLEAR STRUCTURE 138Ba, 140Ce, 141Pr, 143Pm, 144Sm, 109,111Sn; calculated levels, g. Shell model.

NUCLEAR REACTIONS 136Xe, 138Ba, 139La, 141Pr, 142Nd, 106Cd(α, 2n), 142Nd(α, 2np), 108Cd(α, n), E=20-27 MeV; 140Ce(d, n), E=13.5 MeV; 111Cd(3He, 3n), E=28-32 MeV; 109Ag(6Li, 4n), E=40.5 MeV; measured Eγ, Iγ, γγ-coin, σ(E), γ(θ), γ(t), linear polarization, I(ce). 138Ba, 140Ce, 141Pr, 143Pm, 144Sm, 109,111Sn deduced levels, J, π, T1/2, g. In-beam γ spectroscopy. Shell model.

doi: 10.1002/andp.19864980606
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1985KE09      Nucl.Phys. A444, 261 (1985)

H.-J.Keller, S.Frauendorf, U.Hagemann, L.Kaubler, H.Prade, F.Stary

In-Beam Study of 105Ag and Configuration-Dependent Triaxiality in Nuclei around A = 105

NUCLEAR STRUCTURE 104,105,107Ag, 104,105Pd; calculated levels. Cranked shell model.

NUCLEAR REACTIONS 103Rh(α, 2n), E=20-27 MeV; 105Pd(d, 2n), E=13.5 MeV; measured Eγ, Iγ, σ(E, Eγ, θγ), αγ(t), γγ-coin, Iγ(θ, t, H). 105Ag deduced levels, J, π, δ(E2/M1), T1/2, g. Enriched targets. Ge(Li) detectors. Cranked shell model analysis.

doi: 10.1016/0375-9474(85)90350-1
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetF0544.


1984EN01      Z.Phys. A316, 245 (1984)

W.Enghardt, H.U.Jager, L.Kaubler, H.-J.Keller, H.Prade, F.Stary

Excited States above the 6+ Isomer in 140Ce

NUCLEAR REACTIONS 138Ba(α, 2n), E=20-27 MeV; measured Eγ, Iγ, γγ-coin, γ(θ), linear polarization, γ(t), γ(t, H). 140Ce deduced levels, J, π, γ-branching, configuration. Shell model, particle-core coupling model comparisons.

doi: 10.1007/BF01412272
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1984EN02      ATOMKI Kozlem. 26, 34 (1984)

W.Enghardt, H.U.Jager, L.Kaubler, H.J.Keller, H.Prade, F.Stary

Evidence for Core Coupled States of Negative Parity in 138Ba and 140Ce

NUCLEAR REACTIONS 136Xe, 138Ba(α, 2n), E not given; measured γ-spectra. 138Ba, 140Ce deduced levels, J, π, configuration. Particle-core coupling, shell model description.


1984KA16      ATOMKI Kozlem. 26, 27 (1984)

L.Kaubler, W.Enghardt, H.J.Keller, L.Kostov, H.Prade, F.Stary

Half-Lives of 109Sn and Shell-Model Calculations

NUCLEAR REACTIONS 106Cd(α, n), E=20 MeV; measured γ-spectra, centroid shift time distribution. 109Sn levels deduced T1/2. Shell model comparison.


1984PR06      Nucl.Phys. A425, 317 (1984)

H.Prade, W.Enghardt, W.D.Fromm, H.U.Jager, L.Kaubler, H.-J.Keller, L.K.Kostov, F.Stary, G.Winkler, L.Westerberg

New Positive-Parity States and the Shell-Model Description of 111Sn

NUCLEAR REACTIONS, ICPND 108Cd(α, n), E=20-27 MeV; measured Eγ, Iγ, γγ-coin, σ(E, Eγ, θγ), αγ(t), I(ce), γ yield vs E. 111Cd(3He, 3n), E=28-32 MeV; measured Eγ, Iγ, γγ-coin, σ(E, Eγ, γγ), 3Heγ(t), γ yield vs E. 109Ag(6Li, 4n), E=40.5 MeV; measured Eγ, Iγ. 111Sn deduced levels, J, π, T1/2, ICC, δ(E2/M1). Enriched targets, Ge(Li), Si-Li detectors. Shell model analysis.

doi: 10.1016/0375-9474(84)90078-2
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1982HA46      Nucl.Phys. A389, 341 (1982)

U.Hagemann, L.Kaubler, H.-J.Keller, F.R.May, H.Prade, F.Stary

Investigation of 121I Levels Observed in the (3He, 3n) Reaction

NUCLEAR REACTIONS 121Sb(3He, 3n), E=24.3, 27.5, 29.9, 32.0 MeV; measured E(γ), I(γ), σ(E, Eγ, θγ), 3Heγ(t), γγ-coin, Iγ(θ, t, H). 121I deduced levels, J, π, T1/2, g. Enriched 121Sb target, Ge(Li) detectors. Core-quasiparticle coupling calculations.

NUCLEAR STRUCTURE 121I; calculated potential energy surfaces, levels. Core-quasiparticle coupling model, angular momentum projection.

doi: 10.1016/0375-9474(82)90523-1
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1981PR09      Nucl.Phys. A370, 47 (1981)

H.Prade, W.Enghardt, H.U.Jager, L.Kaubler, H.-J.Keller, F.Stary

In-Beam Study and Structure of the N = 82 Nucleus 141Pr

NUCLEAR REACTIONS 139La(α, 2nγ), E=20, 22, 24, 27 MeV; 140Ce(d, nγ), E=13.5 MeV; measured Eγ, Iγ, γγ-coin, σ(E, Eγ, θγ), γ(t), I(ce), γ-ray linear polarization. 141Pr deduced levels, J, π, T1/2, ICC, γ-multipolarity, δ. Natural La target, enriched 140Ce target, Ge(Li), Si(Li) detector. Shell-model calculations.

doi: 10.1016/0375-9474(81)90754-5
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1979HA18      Z.Phys. A290, 399 (1979)

U.Hagemann, H.-J.Keller, C.Protochristow, F.Stary

ΔJ = 1 Band Structures on ns-Isomeric States in Odd Mass 117,119,121Te Nuclei

NUCLEAR REACTIONS 115,117,119Sn(α, 2n), E=19.8, 22.1, 24.2, 27.0 MeV; 117Sn(3He, 3n), E not given; 121Sb(d, 2n), E not given; measured Eγ, Iγ, γ(θ), γγ-coin, Eγ(t), I(ce), γ-L(p). 117,119,121Te deduced levels, J, π, T1/2, mixing ratios, band structure, Nilsson assignments. Enriched targets, Coriolis calculations.

doi: 10.1007/BF01408403
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1979HA47      Nucl.Phys. A329, 157 (1979)

U.Hagemann, H.-J.Keller, Ch.Protochristow, F.Stary

Collective Excitations in the 117,119,121Te Nuclei

NUCLEAR REACTIONS 115,117,119Sn(α, 2nγ), E=19.8-27.0 MeV; 117Sn(3He, 3nγ), E=32 MeV; 121Sb(d, 2nγ), E=13.5 MeV; measured σ(Eα, Eγ, θ), Eγ, Iγ, γγ-coin, αγ(t), E(ce), I(ce), linear polarization. 117,119,121Te deduced levels, J, π, T1/2, ICC, γ-multipolarity, δ. Enriched targets. Ge(Li), Si(Li) detectors, solenoidal electron spectrometer. Rigid triaxial rotor, soft rotor, γ-unstable potential calculations.

doi: 10.1016/0375-9474(79)90287-2
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1977HA36      Nucl.Phys. A289, 292 (1977)

U.Hagemann, H.-J.Keller, H.-F.Brinckmann

Collective Excitations in the 123,125I Nuclei

NUCLEAR REACTIONS 121,123Sb(α, 2nγ), Eα=19.8, 22.4, 24.4, 27.0 MeV; measured Eγ, Iγ, γ(θ), γγ-coin, γγ(t), E(ce), I(ce). 123,125I deduced levels, J, π, T1/2, ICC. Enriched targets. Ge(Li), Si(Li) detectors.

doi: 10.1016/0375-9474(77)90034-3
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1976FU07      Nucl.Phys. A274, 61 (1976)

L.Funke, W.D.Fromm, H.J.Keller, R.Arlt, P.M.Gopytsch

Multiplet Splitting and Isomerism in 142Pm and 144Eu

NUCLEAR REACTIONS 142Nd, 144Sm(d, 2nγ), E=13.5 MeV; measured Eγ, Iγ, γ(θ, t), γγ-coin, γγ(t), I(ce). 142Nd, 144Sm(p, nγ), E=5-10 MeV; measured Eγ, Iγ, γγ(t). 142Pm, 144Eu deduced levels, J, π, T1/2, B(λ), ICC. Enriched targets. Ge(Li), Si(Li) detectors.

doi: 10.1016/0375-9474(76)90227-X
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1954HE82      Phys.Rev. 93, 932 (Q7) (1954)

J.Heller, H.Keller

Direct Integration of the Neutron Transport Equation.


1951BU50      Phys.Rev. 83, 62 (1951)

S.B.Burson, K.W.Blair, H.B.Keller, S.Wexler

The Radiations from Hafnium

doi: 10.1103/PhysRev.83.62
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1951CO15      Phys.Rev. 83, 681 (1951)

J.M.Cork, C.E.Branyan, A.E.Stoddard, H.B.Keller, J.M.LeBlanc, W.J.Childs

Gamma-Radiation Associated with Radium and Daughter Products

doi: 10.1103/PhysRev.83.681
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1951KE26      Phys.Rev. 83, 216A (1951)

H.B.Keller, J.M.Cork

Gamma-Rays in the Decay of the Radio-Isotopes of Cerium

doi: 10.1103/PhysRev.83.216A
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1951KE44      Phys.Rev. 84, 1079 (1951)

H.B.Keller, J.M.Cork

Gamma-Rays and Nuclear Energy Levels Associated with Radioisotopes of Europium, Erbium, and Cerium

doi: 10.1103/PhysRev.84.1079
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1950CO16      Phys.Rev. 78, 95 (1950)

J.M.Cork, H.B.Keller, W.C.Rutledge, A.E.Stoddard

A Reinterpretation of the Electron Spectra of Radioactive Ytterbium and Tantalum

doi: 10.1103/PhysRev.78.95
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1950KE48      ANL-4437, p.22 (1950)

H.B.Keller

Short-Lived γ-Ray Conversion Measurements


1950KE54      Phys.Rev. 79, 1030 (1950)

H.B.Keller, J.M.Cork

Electron Spectrum of Pa233

doi: 10.1103/PhysRev.79.1030
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1949CO07      Phys.Rev. 76, 575 (1949)

J.M.Cork, H.B.Keller, A.E.Stoddard

Neutron Induced Radioactivities in V52, Mo99 and W185

doi: 10.1103/PhysRev.76.575
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1949CO15      Phys.Rev. 76, 986 (1949)

J.M.Cork, H.B.Keller, A.E.Stoddard

Radioactivity in Holmium 166, Thulium 170, and Lutecium 177

doi: 10.1103/PhysRev.76.986
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1949CO17      Phys.Rev. 76, 1886 (1949)

J.M.Cork, H.B.Keller, W.C.Rutledge, A.E.Stoddard

Radioactive Lanthanum 140

RADIOACTIVITY 140La(β-) [from 139La(n, γ), E thermal]; measured decay products, Eβ, Iβ; deduced conversion electron and probable γ-ray energies, partial level scheme, T1/2. Photographic beta spectrometer.

doi: 10.1103/PhysRev.76.1886
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Note: The following list of authors and aliases matches the search parameter H.Keller: , H.B.KELLER, H.J.KELLER, H.P.KELLER