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NSR database version of May 24, 2024.

Search: Author = M.Muller

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2023MU07      Phys.Rev. C 107, 035804 (2023)

M.Muller, F.Heim, Y.Wang, S.Wilden, A.Zilges

Determination of 170, 172Yb(α, n)173, 175Hf reaction cross sections in a stacked-target experiment

NUCLEAR REACTIONS 170Yb(α, n), E=14.5 MeV; 172Yb(α, n), E=17 MeV; measured Eγ, Iγ; deduced σ(E). Activation technique. Comparison with TALYS-1.95 calculations with various α optical model potentials (OMP) and other experimental data. Investigated the evolution of the α-OMP with the neutron-to-proton ratio. Cologne Clover Counting setup consisting of two clover-type high-purity germanium detectors in a face-to-face geometry. Irradiation of stacked targets at10 MV FN tandem accelerator (University of Cologne).

doi: 10.1103/PhysRevC.107.035804
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2023NI10      Phys.Rev.Lett. 131, 222503 (2023)

L.Nies, L.Canete, D.D.Dao, S.Giraud, A.Kankainen, D.Lunney, F.Nowacki, B.Bastin, M.Stryjczyk, P.Ascher, K.Blaum, R.B.Cakirli, T.Eronen, P.Fischer, M.Flayol, V.Girard Alcindor, A.Herlert, A.Jokinen, A.Khanam, U.Koster, D.Lange, I.D.Moore, M.Muller, M.Mougeot, D.A.Nesterenko, H.Penttila, C.Petrone, I.Pohjalainen, A.de Roubin, V.Rubchenya, Ch.Schweiger, L.Schweikhard, M.Vilen, J.Aysto

Further Evidence for Shape Coexistence in 79Znm near Doubly Magic 78Ni

ATOMIC MASSES 79Zn; measured frequencies, TOF; deduced the excitation energy of the 1/2+ isomer, the bandhead of a low-lying deformed structure akin to a predicted low-lying deformed band, shape coexistence. Comparison with state-of-the-art shell-model diagonalizations, complemented with discrete nonorthogonal shell-model calculations. The time-of-flight ion cyclotron resonance (TOF-ICR) method, the JYFLTRAP double Penning trap at the ion guide isotope separator on-line (IGISOL) facility in Jyvaskyla (Finland), and the multi-reflection time-of-flight mass spectrometer (MR-TOF MS) of ISOLTRAP at ISOLDE at CERN (Switzerland).

doi: 10.1103/PhysRevLett.131.222503
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Data from this article have been entered in the XUNDL database. For more information, click here.


2023SA46      Phys.Rev. C 108, 044903 (2023)

N.Sass, M.Muller, O.Garcia-Montero, H.Elfner

Global angular momentum generation in heavy-ion reactions within a hadronic transport approach

doi: 10.1103/PhysRevC.108.044903
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2022SC07      Nature(London) 606, 878 (2022)

A.Schneider, B.Sikora, S.Dickopf, M.Muller, N.S.Oreshkina, A.Rischka, I.A.Valuev, S.Ulmer, J.Walz, Z.Harman, C.H.Keitel, A.Mooser, K.Blaum

Direct measurement of the 3He+ magnetic moments

NUCLEAR MOMENTS 3He; measured transition frequencies; deduced ground-state hyperfine structure, nuclear g-factor, zero-field hyperfine splitting, diamagnetic shielding constant, Zemach radius, nuclear magnetic moment. Comparison with available data. Penning trap.

doi: 10.1038/s41586-022-04761-7
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Data from this article have been entered in the XUNDL database. For more information, click here.


2021HE07      Phys.Rev. C 103, 025805 (2021)

F.Heim, J.Mayer, M.Muller, P.Scholz, A.Zilges

Deducing primary γ-ray intensities and the dipole strength function in 94Mo via radiative proton capture

NUCLEAR REACTIONS 93Nb(p, γ)94Mo, E=3.0, 3.5 MeV; 94Mo(p, p')94Mo, E=13.5 MeV; measured Eγ, Iγ, pγ- and γγ-coin using HORUS γ-ray spectrometer for γ detection and SONIC array for scattered protons at the FN-Tandem accelerator of University of Cologne. 94Mo; deduced levels, J, π, γ-branching ratios, primary γ rays from two-step cascade (TSC) spectra, partial cross-sections at E(p)=3.0 and 3.5 MeV, E1 and M1 strength functions, absolute γ-strength function (γSF). Systematics of γ strength functions in 92Mo, 94Mo and 96Mo. Comparison of γ strength functions with experimental results using the Oslo method and photoinduced experiments as well as with recent theoretical quasiparticle random-phase approximation (QRPA) calculations. Relevance to nucleosynthesis of heavy nuclei in the slow and rapid neutron capture processes.

doi: 10.1103/PhysRevC.103.025805
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2539. Data from this article have been entered in the XUNDL database. For more information, click here.


2021HE16      Phys.Rev. C 103, 054613 (2021)

F.Heim, M.Muller, S.Wilden, A.Zilges

Absolute 96Mo(p, n)96m+gTc cross sections and a new branching for the 96mTc decay

NUCLEAR REACTIONS 96Mo(p, n)96Tc/96mTc, E=3.9-5.4 MeV; measured Eγ, Iγ; deduced production σ(E) for 96Tc g.s. and 96mTc, total σ(E) using activation method, branching ratio for 96mTc decay to 96Tc g.s. Comparison with previous experimental results, and with statistical model calculations using Hauser-Feshbach TALYS code v1.95.

RADIOACTIVITY 96mTc(EC)[from 96Mo(p, n), E=3.9-5.4 MeV]; measured Eγ, Iγ, branching ratio for the ϵ decay mode. Comparison with literature data.

doi: 10.1103/PhysRevC.103.054613
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2542. Data from this article have been entered in the XUNDL database. For more information, click here.


2021HE17      Phys.Rev. C 103, 055803 (2021)

F.Heim, J.Mayer, M.Muller, P.Scholz, A.Zilges

Investigating the 109Ag(p, γ)110Cd reaction and its underlying nuclear physics

NUCLEAR REACTIONS 109Ag(p, γ)110Cd, E=2.5-5.0 MeV from the FN-Tandem accelerator of the University of Cologne; measured Eγ, Iγ, γ(θ) using HORUS array of 14 HPGe detectors; deduced total σ(E). Comparison with previous experimental results and Hauser-Feshbach calculations. 106,108,110,112Cd; analyzed dipole components of the γ-ray strength functions and nuclear level density (NLD) using D1M+QRPA+0lim γ-SF model and microscopic NLD model.

doi: 10.1103/PhysRevC.103.055803
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2543. Data from this article have been entered in the XUNDL database. For more information, click here.


2020HE08      Phys.Rev. C 101, 035805 (2020)

F.Heim, P.Scholz, M.Korschgen, J.Mayer, M.Muller, A.Zilges

Insights into the statistical γ-decay behavior of 108Cd via radiative proton capture

NUCLEAR REACTIONS 107Ag(p, γ)108Cd, E=2.0, 2.7, 3.5, 4, 4.5, 5.0 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using the HORUS spectrometer at the Institute for Nuclear Physics, Cologne. 108Cd; deduced levels, resonances, J, π, partial and total σ(E) in the astrophysical energy region, E1 γ-strength function (γ-SF), total γ-decay width, nuclear level density (NLD). Comparison with previous experimental data, and with statistical model calculations based on Gogny D1M HFB+QRPA interaction. Relevance to mechanism of the p process.

doi: 10.1103/PhysRevC.101.035805
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2020HE09      Phys.Rev. C 101, 035807 (2020)

F.Heim, P.Scholz, J.Mayer, M.Muller, A.Zilges

Constraining nuclear properties in 94Mo via a 93Nb(p, γ)94Mo total cross section measurement

NUCLEAR REACTIONS 93Nb(p, γ), E=1.96-4.98 MeV; measured Eγ, Iγ, γγ-coin, γ(θ) using the HORUS spectrometer at the Institute for Nuclear Physics, Cologne. 94Mo; deduced levels, J, π, nuclear level density (NLD), E1, M1 and E1+M1 g-strength functions (γ-SF), partial and total σ(E). 94Mo(γ, p), (γ, n), T=2.0-3.5 GK; deduced reaction rates, and compared with data in REACLIB and STARLIB libraries. Comparison with previous experimental data, and with statistical model calculations based on Gogny D1M HFB+QRPA interaction. Relevance to mechanism of the p process.

doi: 10.1103/PhysRevC.101.035807
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetO2516. Data from this article have been entered in the XUNDL database. For more information, click here.


2020RI04      Phys.Rev.Lett. 124, 113001 (2020)

A.Rischka, H.Cakir, M.Door, P.Filianin, Z.Harman, W.J.Huang, P.Indelicato, C.H.Keitel, C.M.Konig, K.Kromer, M.Muller, Y.N.Novikov, R.X.Schussler, C.Schweiger, S.Eliseev, K.Blaum

Mass-Difference Measurements on Heavy Nuclides with an eV/c2 Accuracy in the PENTATRAP Spectrometer

ATOMIC MASSES 126,128,129,131,132,134Xe; measured frequencies; deduced mass differences of five pairs of stable xenon isotopes. The novel cryogenic multi-Penning-trap mass spectrometer PENTATRAP.

doi: 10.1103/PhysRevLett.124.113001
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1998MU29      Nuovo Cim. 111A, 705 (1998)

M.Muller, S.E.Muraviev, I.Rotter, V.V.Sokolov

Interfering States and Narrow Resonances at High Excitation Energy

NUCLEAR STRUCTURE 208Pb; calculated isoscalar multipole giant resonance strength function; deduced narrow states, role of one-particle continuum. Continuum RPA.


1997SO13      Phys.Rev. C56, 1031 (1997)

V.V.Sokolov, I.Rotter, D.V.Savin, M.Muller

Interfering Doorway States and Giant Resonances. I. Resonance Spectrum and Multipole Strengths

doi: 10.1103/PhysRevC.56.1031
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1997SO14      Phys.Rev. C56, 1044 (1997)

V.V.Sokolov, I.Rotter, D.V.Savin, M.Muller

Interfering Doorway States and Giant Resonances. II. Transition Strengths

doi: 10.1103/PhysRevC.56.1044
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1996PE07      Phys.Rev. C53, 3002 (1996)

E.Persson, M.Muller, I.Rotter

Resonance Phenomena Near Thresholds

NUCLEAR STRUCTURE 16O; calculated resonances, nucleon decay characteristics; deduced trapping effect role.

doi: 10.1103/PhysRevC.53.3002
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1995IS01      Phys.Rev. C51, 1842 (1995)

W.Iskra, M.Muller, I.Rotter

Radial Pattern of Nuclear Decay Processes

NUCLEAR STRUCTURE 16O; calculated 1- resonances partial widths radial profile; deduced correlation to T1/2. Continuum shell model.

doi: 10.1103/PhysRevC.51.1842
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1994IS02      J.Phys.(London) G20, 775 (1994)

W.Iskra, M.Muller, I.Rotter

Self-Organization in the Nuclear System: II. Formation of a new order

doi: 10.1088/0954-3899/20/5/011
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1994MU15      Acta Phys.Pol. B25, 711 (1994)

M.Muller, I.Rotter, W.Iskra

Selforganization and Disorder in an Open Quantum System


1993FO03      Nucl.Instrum.Methods Phys.Res. A327, 456 (1993)

M.Forker, W.Herz, U.Hutten, M.Muller, R.Musseler, J.Schmidberger, D.Simon, A.Weingarten, S.C.Bedi

A Furnace for High Temperature Perturbed Angular Correlation Measurements

RADIOACTIVITY 181Hf(β-); measured γγ(θ, H). High temperature compact furnace, standard 181Ta probe in Zr, Hf metal and in undoped ZrO2.

doi: 10.1016/0168-9002(93)90711-P
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1993IS08      J.Phys.(London) G19, 2045 (1993)

W.Iskra, M.Muller, I.Rotter

Self-Organization in the Nuclear System: I. The Slaving Principle

NUCLEAR STRUCTURE 16O; calculated transition from low to high level density; deduced slaving principle evidence. Many-body system, continuum channels, self-organization point of view.

doi: 10.1088/0954-3899/19/12/010
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1981AN04      Nucl.Phys. A358, 365c (1981)

H.G.Andresen, M.Engel, M.Muller, H.J.Ohlbach

Can the Dynamics of Nuclear Rotation be Deduced from Electron Scattering Experiments < Question >

NUCLEAR REACTIONS 154Sm(e, e'), E=20-200 MeV; calculated σ(θ, E); deduced charge, current contribution. PWBA calculation.

doi: 10.1016/0375-9474(81)90339-0
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