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NSR database version of March 21, 2024.

Search: Author = L.K.Kostov

Found 26 matches.

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2006RU06      Phys.Rev. C 73, 044308 (2006)

G.Rusev, R.Schwengner, F.Donau, M.Erhard, S.Frauendorf, E.Grosse, A.R.Junghans, L.Kaubler, K.Kosev, L.K.Kostov, S.Mallion, K.D.Schilling, A.Wagner, H.von Garrel, U.Kneissl, C.Kohstall, M.Kreutz, H.H.Pitz, M.Scheck, F.Stedile, P.von Brentano, C.Fransen, J.Jolie, A.Linnemann, N.Pietralla, V.Werner

Systematics of magnetic dipole strength in the stable even-mass Mo isotopes

NUCLEAR REACTIONS 92Mo(γ, γ'), E=6.0 MeV bremsstrahlung; 98,100Mo(γ, γ'), E ≈ 3.3, 3.8 MeV bremsstrahlung; measured Eγ, Iγ. 92,98,100Mo deduced transitions B(M1), strength distributions. Comparison with quasiparticle RPA model predictions.

doi: 10.1103/PhysRevC.73.044308
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2005RU14      Phys.Rev.Lett. 95, 062501 (2005)

G.Rusev, R.Schwengner, F.Donau, S.Frauendorf, L.Kaubler, L.K.Kostov, S.Mallion, K.D.Schilling, A.Wagner, E.Grosse, H.von Garrel, U.Kneissl, C.Kohstall, M.Kreutz, H.H.Pitz, M.Scheck, F.Stedile, P.von Brentano, J.Jolie, A.Linnemann, N.Pietralla, V.Werner

Decay of 1+ States as a New Probe of the Structure of 0+ Shape Isomers

NUCLEAR REACTIONS 98,100Mo(γ, γ'), E=3.2-3.8 MeV bremsstrahlung; measured Eγ, Iγ. 98,100Mo deduced levels, J, π, branching ratios, transition probabilities, shape isomer configuration mixing features.

doi: 10.1103/PhysRevLett.95.062501
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1998KO35      Eur.Phys.J. A 2, 269 (1998)

L.K.Kostov, W.Andrejtscheff, L.G.Kostova, L.Kaubler, H.Prade, R.Schwengner

Absolute E1 and E2 Transition Rates in 110Cd

NUCLEAR REACTIONS 108Pd(α, 2n), E=27 MeV; measured Eγ, Iγ(t). 110Cd deduced levels T1/2, B(E1), B(E2). Generalized centroid-shift analysis.

doi: 10.1007/s100500050119
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1996KO16      Z.Phys. A355, 179 (1996)

L.K.Kostov, W.Andrejtscheff, L.G.Kostova, A.Dewald, K.O.Zell, P.von Brentano

Transition Probabilities and the Structure of Some Negative-Parity States in 126,130Xe and 132Ba

NUCLEAR REACTIONS 124,128Te(α, 2n), E=26 MeV; 122Sn(13C, 3n), E=53 MeV; measured Eγ, Iγ, γγ(t). 126,130Xe, 132Ba deduced levels, J, π, T1/2, B(λ). Ge detectors, generalized centroid-shift analysis.

doi: 10.1007/s002180050096
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1994KO13      Z.Phys. A348, 79 (1994)

L.K.Kostov, W.Andrejtscheff, L.G.Kostova, A.Dewald, G.Bohm, K.O.Zell, P.von Brentano

Isomeric Transitions between Shape Coexisting States in Iodine Isotopes with A = 115, 119 and 121

NUCLEAR REACTIONS 106Cd(12C, 2np), E=63 MeV; 116,118Sn(6Li, 3n), E=33 MeV; measured γγ(t), Eγ, Iγ. 121,115,119I deduced high-spin levels, J, π, B(λ), γ-multipolarity, isomers T1/2, configuration.

doi: 10.1007/BF01289593
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1992KO08      Z.Phys. A342, 145 (1992)

L.G.Kostova, W.Andrejtscheff, L.K.Kostov, L.Funke, E.Will, A.I.Vdovin

The Half-Life of the 1437 keV (11/2)- State in 97Mo

NUCLEAR REACTIONS 94Zr(α, n), E=16 MeV; measured γ(t), time centroids. 97Mo deduced (11/2)- level T1/2, B(M2). Model comparison.

NUCLEAR STRUCTURE 95,97,99Mo, 99Ru, 101Pd; calculated (11/2)- to (7/2)+ transition B(M2). Quasiparticle phonon model.

doi: 10.1007/BF01288462
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1990AN21      Nucl.Phys. A516, 157 (1990)

W.Andrejtscheff, L.K.Kostov, P.Petkov, S.Brant, V.Paar, V.Lopac, G.Boehm, J.Eberth, R.Wirowski, K.O.Zell

Electromagnetic Properties of Some Odd-Odd Nuclei in the A ≈ 100 Region and IBFFM Description of 106Ag

NUCLEAR REACTIONS 98Mo(7Li, 3n), (7Li, 2nα), E=30 MeV; 92,94Mo(12C, np), 94Mo(12C, 2n), (12C, n2p), E=50 MeV; measured Eγ, Iγ, γγ(t). 102Rh, 99Tc, 102,104Ag, 104Cd, 103Pd deduced levels, T1/2, B(λ). Enriched targets, liquid scintillators, Ge detectors. Generalized centroid-shift analysis, B(λ) systematics, interacting boson-fermion-fermion model calculations.

doi: 10.1016/0375-9474(90)90055-Q
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1990KO42      Z.Phys. A337, 407 (1990)

L.K.Kostov, W.Andrejtscheff, L.G.Kostova, A.Dewald, G.Bohm, K.O.Zell, P.von Brentano, H.Prade, J.Doring, R.Schwengner

Decay Properties of the (19/2)- Isomers in 113,117Sb

NUCLEAR REACTIONS 104Pd(12C, 2np), E=63 MeV; 115In(α, 2n), E=26, 27 MeV; measured Eγ, Iγ, γ(12C)(t), γ(α)(t). 113,117Sb deduced isomers, T1/2, level J, π, decay features, B(λ), configurations. Ge detectors, generalized centroid shift method.


1989AN14      Nucl.Phys. A505, 397 (1989)

W.Andrejtscheff, L.K.Kostov, P.Petkov, Y.Sy.Savane, Ch.Stoyanov, P.von Brentano, J.Eberth, R.Reinhardt, K.O.Zell

Electric Quadrupole Transition Strengths of the Type 61+ → 41+ in 106-112Sn

NUCLEAR REACTIONS 106,110,112Cd(3He, 3n), 106Cd(3He, 2p), E=29 MeV; 104Pd(12C, 2nα), E=63 MeV; measured Eγ, Iγ, γγ(t). 106,110,112Sn, 107Cd deduced levels T1/2, B(E2). Enriched target, liquid scintillators, Ge detectors. Generalized centroid-shift analysis, quasiparticle-phonon model calculations.

doi: 10.1016/0375-9474(89)90383-7
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1988AN17      Z.Phys. A331, 433 (1988)

W.Andrejtscheff, L.K.Kostov, L.G.Kostova, P.Petkov, A.Dewald, J.Eberth, K.O.Zell, P.von Brentano, L.Funke, E.Will

p-n Multiplets and Band-Like Structures in 106Ag

NUCLEAR REACTIONS 103Rh(α, nγ), E=15.5 MeV; measured E(γ), I(γ), γγ(t), centroid shift. 106Ag levels deduced T1/2, B(λ), configuration. Natural target, Ge-detector, liquid scintillator, pulsed beam.


1988KO08      Z.Phys. A330, 45 (1988)

L.K.Kostov, W.Andrejtscheff, L.G.Kostova, P.Petkov, L.Funke, L.Kaubler, H.Prade

Multiplet Structure and Core-Related Effects on Transition Rates in 87Y and Neighbouring A ≈ 90 Nuclei

NUCLEAR REACTIONS 85Rb(α, xn), E=27 MeV; measured E(γ), I(γ). 88Y, 85Rb deduced T1/2. 87Y deduced levels, T1/2, B(E2), configuration. Ge detectors, generalized centroid-shift method.


1988KO16      Nucl.Phys. A485, 31 (1988)

L.G.Kostova, W.Andrejtscheff, L.K.Kostov, F.Donau, L.Kaubler, H.Prade, H.Rotter

Shape Coexistence and Three-Quasiparticle Excitations in 123,125I

NUCLEAR REACTIONS 121,123Sb(α, 2n), E=27 MeV; measured E(γ), I(γ), αγ(t). 123,125I deduced levels T1/2, B(λ). Enriched targets, Ge detectors. Generalized centroid-shift analysis, core-quasiparticle coupling model calculations.

doi: 10.1016/0375-9474(88)90520-9
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1988PE17      Nucl.Instrum.Methods Phys.Res. A271, 617 (1988)

P.Petkov, W.Andrejtscheff, L.K.Kostov, L.G.Kostova

The Elimination of Prompt Components in Delayed Coincidence Time Distributions

NUCLEAR REACTIONS 105Pd(n, γ), E=reactor; 110,112Cd(3He, 3n), E=29 MeV; measured γ-spectra, γγ(t). 110,112Sn, 106Pd level deduced T1/2. Centroid shift analysis.

doi: 10.1016/0168-9002(88)90331-2
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1987AN09      Z.Phys. A328, 23 (1987)

W.Andrejtscheff, L.K.Kostov, J.Eberth, J.Busch, M.Senba, Z.Z.Ding

Transition Probabilities and Hole-Core Coupled Configurations in 107In

NUCLEAR REACTIONS 93Nb(16O, 2n), 94Mo(16O, 2np), E=56 MeV; measured Eγ, Iγ, γ(t), I(ce). 107In deduced levels, J, π, T1/2, γ-multipolarity, B(E2), configurations. Enriched targets, Ge detectors, mini-orange electron spectrometer, generalized centroid shift method.


1986AN03      Nucl.Phys. A448, 301 (1986)

W.Andrejtscheff, L.K.Kostov, L.G.Kostova, P.Petkov, H.Rotter, W.D.Fromm, H.Prade, F.Stary

Two-Quasiproton and Two-Quasineutron Excitations in the Transitional Nuclei 102,104,106Pd

NUCLEAR REACTIONS 100,102,104Ru(α, 2n), E=27 MeV; measured Eγ, Iγ, αγ(t). 102,104,106Pd deduced levels T1/2, B(λ). Enriched targets, Ge detectors. Generalized centroid-shift analysis.

doi: 10.1016/0375-9474(86)90093-X
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1986AN14      J.Phys.(London) G12, L151 (1986)

W.Andrejtscheff, P.Petkov, Ch.Protochristow, L.K.Kostov, W.D.Hamilton, F.Hoyler

A Mixed Symmetry or Quasineutron Pair Interpretation of the K(π) = 0+3 Level in 172Yb

NUCLEAR REACTIONS 171Yb(n, γ), E=thermal; measured γγ-coin. 172Yb deduced levels, T1/2, γ-branching, γ-multipolarity, B(λ), configuration.

doi: 10.1088/0305-4616/12/6/005
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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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1986KO25      Z.Phys. A325, 293 (1986)

L.K.Kostov, W.Andrejtscheff, L.G.Kostova, P.Petkov, W.Enghardt, H.Prade, L.Kaubler, H.Rotter, F.Stary

Lifetime Measurements and Particle-Core Coupling Calculations in 144Sm

NUCLEAR STRUCTURE 144Sm; calculated levels, B(λ). Particle-core coupling approach.

NUCLEAR REACTIONS 142Nd(α, 2n), E=27 MeV; measured Eγ, Iγ, γ(t). 144Sm deduced levels, T1/2, B(λ). Enriched target, Ge(Li) detector.


1985AN23      Nucl.Phys. A445, 515 (1985)

W.Andrejtscheff, L.K.Kostov, L.G.Kostova, P.Petkov, M.Senba, N.Tsoupas, Z.Z.Ding, C.Tuniz

Some M1 Transition Strengths in Odd-A Nuclei Away from Closed Shells

NUCLEAR REACTIONS 60Ni(16O, pα), 78Se(16O, 2np), E=56, 64 MeV; 91Zr(12C, 2n), E=48 MeV; measured Eγ, Iγ, γγ(t); 89Y, 100Ru(α, xn), E=27 MeV; measured Eγ, Iγ, αγ(t). 71As, 91Nb, 101,103Pd levels deduced J, π, T1/2, B(λ). Enriched targets, Ge detectors. Cluster-vibrating core coupling, particle-rotor mixing calculations.

doi: 10.1016/0375-9474(85)90455-5
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1985AN27      Nucl.Phys. A437, 167 (1985)

W.Andrejtscheff, L.K.Kostov, H.Rotter, H.Prade, F.Stary, M.Senba, N.Tsoupas, Z.Z.Ding, P.Raghavan

Two-Quasiparticle Excitations and Collectivity in the Weakly-Deformed Transitional Isotopes 104,106,108Cd

NUCLEAR REACTIONS 93Nb(16O, 2np), E=56, 64 MeV; 102,106Pd(α, 2n), E=27 MeV; measured Eγ, Iγ, γγ(t), αγ(t). 104,106,108Cd deduced levels, J, π, configurations, B(λ), T1/2. Enriched targets, Ge detectors.

doi: 10.1016/0375-9474(85)90231-3
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1984KE10      Nucl.Phys. A425, 493 (1984)

P.Kemnitz, P.Ojeda, J.Doring, L.Funke, L.K.Kostov, H.Rotter, E.Will, G.Winter

Collectivity and the Role of Two-Proton and Two-Neutron Excitations in 82Kr

NUCLEAR REACTIONS 80Se(α, 2n), E=21-27 MeV; measured Eγ, Iγ, σ(E, Eγ, θ), γγ-coin, αγ(t), Doppler shift, linear polarization. 82Kr deduced levels, J, π, T1/2, B(λ). Enriched target.

doi: 10.1016/0375-9474(84)90021-6
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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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1984RO06      Nucl.Phys. A417, 1 (1984)

H.Rotter, C.Heiser, K.D.Schilling, W.Andrejtscheff, L.K.Kostov, M.K.Balodis

Electromagnetic Transition Probabilities in the Doubly Odd N = 91 Nucleus 154Eu

NUCLEAR REACTIONS 153Eu(n, γ), E=thermal; measured Eγ, Iγ, γγ(t). 154Eu levels deduced T1/2, B(λ). Enriched target, plastic scintillator, Ge detector. Nilsson-plus-pairing-model calculations.

doi: 10.1016/0375-9474(84)90320-8
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1983KO10      Phys.Lett. 123B, 29 (1983)

L.K.Kostov, W.Andrejtscheff, H.Rotter, H.Prade, F.Stary

The Coexistence of Semi-Decoupled and Completely Aligned Bands in A ≈ 100 Nuclei

NUCLEAR REACTIONS 102,104Ru, 106Pd(α, 2n), E=27 MeV; measured γ-spectra, centroid shifts. 106Cd deduced high-spin state transition B(E2). 104,106Pd, 108Cd deduced high-spin state T1/2, B(E2), two-quasineutron band characteristics.

doi: 10.1016/0370-2693(83)90951-6
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1983KO28      Nucl.Phys. A406, 541 (1983)

L.K.Kostov, W.Andrejtscheff, H.Rotter, H.Prade, F.Stary

Transition Probabilities between Two-Quasiparticle Configurations in 170,172Yb and 182W

NUCLEAR REACTIONS 168,170Er, 180Hf(α, 2n), E=27 MeV; measured Eγ, Iγ, αγ(t). 170,172Yb, 182W levels deduced T1/2, B(λ). Enriched targets, detectors. Nilsson-plus-pairing calculations.

doi: 10.1016/0375-9474(83)90376-7
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1982KO08      Nucl.Phys. A376, 451 (1982)

L.K.Kostov, H.Rotter, C.Heiser, H.Prade, F.Stary, W.Andrejtscheff

Absolute E1, ΔK = 1 Transition Probabilities between Multi-Quasiparticle High-Spin States in 176Hf and 178Hf

NUCLEAR REACTIONS 174,176Yb(α, xn), E=27 MeV; measured Eγ, Iγ, αγ(t). 175,176,177,178Hf levels deduced T1/2, B(λ). Enriched targets, Ge detectors. Nilsson plus pairing calculations.

doi: 10.1016/0375-9474(82)90123-3
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