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NSR database version of April 11, 2024.

Search: Author = J.Beller

Found 21 matches.

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2021MA62      Phys.Lett. B 820, 136569 (2021)

K.R.Mashtakov, V.Yu.Ponomarev, M.Scheck, S.W.Finch, J.Isaak, M.Zweidinger, O.Agar, C.Bathia, T.Beck, J.Beller, M.Bowry, R.Chapman, M.M.R.Chishti, U.Friman-Gayer, L.P.Gaffney, P.E.Garrett, E.T.Gregor, J.M.Keatings, U.Koster, B.Loher, A.D.MacLean, D.O'Donnell, H.Pai, N.Pietralla, G.Rainovski, M.Ramdhane, C.Romig, G.Rusev, D.Savran, G.S.Simpson, J.Sinclair, K.Sonnabend, P.Spagnoletti, A.P.Tonchev, W.Tornow

Structure of high-lying levels populated in the 96Y → 96Zr β decay

RADIOACTIVITY 96Y(β-) [from 235U(n, F), E thermal]; measured decay products, Eγ, Iγ, Eβ, Iβ; deduced γ-ray energies, B(E1), branching ratios, Gamow-Teller transition probabilities B(GT). Quasiparticle Phonon Model. Institut Laue Langevin (ILL), LOHENGRIN separator.

doi: 10.1016/j.physletb.2021.136569
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Data from this article have been entered in the XUNDL database. For more information, click here.


2019RI02      Phys.Rev. C 100, 021301R (2019)

P.C.Ries, H.Pai, T.Beck, J.Beller, M.Bhike, V.Derya, U.Gayer, J.Isaak, B.Loher, Krishichayan, L.Mertes, N.Pietralla, C.Romig, D.Savran, M.Schilling, W.Tornow, S.Typel, V.Werner, J.Wilhelmy, A.Zilges, M.Zweidinger

Valence-shell dependence of the pygmy dipole resonance: E1 strength difference in 50, 54Cr

NUCLEAR REACTIONS 50,54Cr(γ, γ'), (polarized γ, γ'), E=7.5, 9.5 MeV bremsstrahlung beam from Darmstadt, and 5.5-9.8 MeV Compton-scattered polarized beam from TUNL; measured Eγ, Iγ, azimuthal angular distributions, integrated cross sections using nuclear resonance fluorescence (NRF) method at the Darmstadt High Intensity Photon Setup (DHIPS), and at the High-Intensity γ-ray Source facility (HIγS) of TUNL. 50,54Cr; deduced levels, pygmy dipole resonances (PDR), J, π, widths of transitions to g.s., branching ratios, B(E1), B(M1), B(E2), Thomas-Reiche-Kuhn (TRK) energy-weighted sum rule for 50,52,54Cr; calculated neutron skin thicknesses for 48,49,50,51,52,53,54,55,56Cr.

doi: 10.1103/PhysRevC.100.021301
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2017BE10      Phys.Rev.Lett. 118, 212502 (2017)

T.Beck, J.Beller, N.Pietralla, M.Bhike, J.Birkhan, V.Derya, U.Gayer, A.Hennig, J.Isaak, B.Loher, V.Yu.Ponomarev, A.Richter, C.Romig, D.Savran, M.Scheck, W.Tornow, V.Werner, A.Zilges, M.Zweidinger

E2 decay strength of the M1 scissors mode of 156Gd and its first excited rotational state

NUCLEAR REACTIONS 156Gd(γ, γ'), E=3.07 MeV; measured reaction products, Eγ, Iγ; deduced relative intensities for transitions, B(M1), B(E2), multipole mixing ratio of the decay transition from the scissors mode to the 2+1 state in a deformed nucleus.

doi: 10.1103/PhysRevLett.118.212502
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2016BE31      J.Phys.(London) G43, 115101 (2016)

N.Benouaret, J.Beller, H.Pai, N.Pietralla, V.Yu.Ponomarev, C.Romig, L.Schnorrenberger, M.Zweidinger, M.Scheck, J.Isaak

Dipole response of the odd-proton nucleus 205Tl up to the neutron-separation energy

NUCLEAR REACTIONS 203,205Tl(γ, γ'), E<8 MeV; measured reaction products, Eγ, Iγ; deduced energy levels, σ(θ), resonance parameters, B(M1), B(E1). The quasiparticle phonon model calculations.

doi: 10.1088/0954-3899/43/11/115101
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2016LO04      Phys.Lett. B 756, 72 (2016)

B.Loher, D.Savran, T.Aumann, J.Beller, M.Bhike, N.Cooper, V.Derya, M.Duchene, J.Endres, A.Hennig, P.Humby, J.Isaak, J.H.Kelley, M.Knorzer, N.Pietralla, V.Yu.Ponomarev, C.Romig, M.Scheck, H.Scheit, J.Silva, A.P.Tonchev, W.Tornow, F.Wamers, H.Weller, V.Werner, A.Zilges

The decay pattern of the Pygmy Dipole Resonance of 140Ce

NUCLEAR REACTIONS 140Ce(γ, γ'), (γ, γ), E=6.5 MeV; measured reaction products, Eγ, Iγ; deduced elastic scattering σ, average branching ratio to excited states for 140Ce, Pygmy Dipole Resonance (PDR) couple to the ground state as well as to low-lying excited states, PDR mixing. Comparison with nuclear model calculations.

doi: 10.1016/j.physletb.2016.02.042
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0215.


2016PA04      Phys.Rev. C 93, 014318 (2016)

H.Pai, T.Beck, J.Beller, R.Beyer, M.Bhike, V.Derya, U.Gayer, J.Isaak, Krishichayan, J.Kvasil, B.Loher, V.O.Nesterenko, N.Pietralla, G.Martinez-Pinedo, L.Mertes, V.Yu.Ponomarev, P.-G.Reinhard, A.Repko, P.C.Ries, C.Romig, D.Savran, R.Schwengner, W.Tornow, V.Werner, J.Wilhelmy, A.Zilges, M.Zweidinger

Magnetic dipole excitations of 50Cr

NUCLEAR REACTIONS 50Cr(γ, γ'), (polarized γ, γ'), E<9.7 MeV bremsstrahlung; measured Eγ, Iγ, γ(θ), γ-polarization asymmetry, integrated σ, γ-branching ratios. Experiments performed at Darmstadt S-DALINAC and TUNL High Intensity γ-ray Source (HIγS) facilities. 50Cr; deduced levels, J, π, B(M1), reduced widths, configurations, M1 spin-flip transition. Discussed isovector rotation-like oscillations of 1+ states versus scissors-type mode. Comparison with Skyrme quasiparticle random-phase-approximation (QRPA) and the large-scale shell model (LSSM) calculations.

doi: 10.1103/PhysRevC.93.014318
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Data from this article have been entered in the XUNDL database. For more information, click here.


2015BE02      Phys.Lett. B 741, 128 (2015)

J.Beller, C.Stumpf, M.Scheck, N.Pietralla, D.Deleanu, D.M.Filipescu, T.Glodariu, W.Haxton, A.Idini, J.H.Kelley, E.Kwan, G.Martinez-Pinedo, R.Raut, C.Romig, R.Roth, G.Rusev, D.Savran, A.P.Tonchev, W.Tornow, J.Wagner, H.R.Weller, N.-V.Zamfir, M.Zweidinger

Separation of the 1+/1- parity doublet in 20Ne

NUCLEAR REACTIONS 20Ne, 28Si(polarized γ, γ'), E=11.26 MeV; measured reaction products, Eγ, Iγ; deduced the energy difference of the parity doublet, the ratio of their integrated σ. Comparison with shell model calculations.

doi: 10.1016/j.physletb.2014.12.018
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2015RO09      Phys.Lett. B 744, 369 (2015)

C.Romig, D.Savran, J.Beller, J.Birkhan, A.Endres, M.Fritzsche, J.Glorius, J.Isaak, N.Pietralla, M.Scheck, L.Schnorrenberger, K.Sonnabend, M.Zweidinger

Direct determination of ground-state transition widths of low-lying dipole states in 140Ce with the self-absorption technique

NUCLEAR REACTIONS 140Ce(γ, γ'), E<8 MeV; measured reaction products, Eγ, Iγ; deduced ground state transition widths, branching ratios. Comparison with available data.

doi: 10.1016/j.physletb.2015.04.013
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Data from this article have been entered in the XUNDL database. For more information, click here.


2014BE09      Acta Phys.Pol. B45, 193 (2014)

N.Benouaret, J.Beller, J.Isaak, J.H.Kelley, H.Pai, N.Pietralla, V.Yu.Ponomarev, R.Raut, C.Romig, G.Rusev, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, M.Zweidinger

Photoexcitation of the Stable Tl Isotopes Below the Neutron Separation Energy

NUCLEAR REACTIONS 203,205Tl(γ, γ'), E<7.5 MeV; measured reaction products, Eγ, Iγ; deduced dipole strength distribution. Comparison with available data.

doi: 10.5506/APhysPolB.45.193
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2014KR06      Phys.Rev. C 89, 041302 (2014); Erratum Phys.Rev. C 92, 039902 (2015)

C.Kremer, J.Beller, A.Leviatan, N.Pietralla, G.Rainovski, R.Trippel, P.Van Isacker

Linking partial and quasi dynamical symmetries in rotational nuclei

NUCLEAR STRUCTURE 156,158,160,162Gd, 160,162,164Dy, 164,166Er; calculated ground-state fluctuations for the extended consistent-Q formalism (ECQF) Hamiltonian in even-even rare earth nuclei; deduced empirical formalism for linkage between O(6) partial dynamical symmetry (PDS) and SU(3) quasi-dynamical symmetry (QDS) in rotational nuclei; identified nuclei satisfying both symmetries. 160Gd; calculated levels, J, π, bands with the IBM approach using the ECQF Hamiltonian, and compared with experimental spectrum. Quantum number fluctuations and the intrinsic state formalism are used within the framework of interacting boson model.

doi: 10.1103/PhysRevC.89.041302
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2013BE38      Phys.Rev.Lett. 111, 172501 (2013)

J.Beller, N.Pietralla, J.Barea, M.Elvers, J.Endres, C.Fransen, J.Kotila, O.Moller, A.Richter, T.R.Rodriguez, C.Romig, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, V.Werner, A.Zilges, M.Zweidinger

Constraint on 0νββ Matrix Elements from a Novel Decay Channel of the Scissors Mode: The Case of 154Gd

NUCLEAR REACTIONS 154Gd(γ, γ'), E<4.5 MeV; measured reaction products, Eγ, Iγ; deduced level energies, J, π, B(M1), B(E1). Comparison with IBM-2 and EDF calculations.

RADIOACTIVITY 154Sm(2β-); calculated neutrinoless nuclear matrix elements.

doi: 10.1103/PhysRevLett.111.172501
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Data from this article have been entered in the XUNDL database. For more information, click here.


2013IS14      Phys.Lett. B 727, 361 (2013)

J.Isaak, D.Savran, M.Krticka, M.W.Ahmed, J.Beller, E.Fiori, J.Glorius, J.H.Kelley, B.Loher, N.Pietralla, C.Romig, G.Rusev, M.Scheck, L.Schnorrenberger, J.Silva, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, M.Zweidinger

Constraining nuclear photon strength functions by the decay properties of photo-excited states

NUCLEAR REACTIONS 11B, 130Te(γ, γ'), (γ, X), E<10 MeV; measured reaction products, Eγ, Iγ; deduced excited states π quantum numbers within 5.5-8.5 MeV region, γ-ray branching ratio, population intensity. Comparison with DICEBOX simulations, DHIPS and HIγS facilities at Darmstadt and TUNL, respectively.

doi: 10.1016/j.physletb.2013.10.040
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0193.


2013LO05      Nucl.Instrum.Methods Phys.Res. A723, 136 (2013)

B.Loher, V.Derya, T.Aumann, J.Beller, N.Cooper, M.Duchene, J.Endres, E.Fiori, J.Isaak, J.Kelley, M.Knorzer, N.Pietralla, C.Romig, D.Savran, M.Scheck, H.Scheit, J.Silva, A.Tonchev, W.Tornow, H.Weller, V.Werner, A.Zilges

The high-efficiency γ-ray spectroscopy setup γ3 at HIγS

NUCLEAR REACTIONS 32S(γ, γ'), E=8.125 MeV; measured reaction products, Eγ, Iγ; deduced precise value for the branching ratio for 1+ to 2+ transition.

doi: 10.1016/j.nima.2013.04.087
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2013PA38      Phys.Rev. C 88, 054316 (2013)

H.Pai, J.Beller, N.Benouaret, J.Enders, T.Hartmann, O.Karg, P.von Neumann-Cosel, N.Pietralla, V.Yu.Ponomarev, C.Romig, M.Scheck, L.Schnorrenberger, S.Volz, M.Zweidinger

Low-lying dipole strength in the N=28 shell-closure nucleus 52Cr

NUCLEAR REACTIONS 52Cr(γ, γ'), E<9.9 MeV; measured Eγ, Iγ, γ(θ), integrated cross sections using bremsstrahlung beam at the superconducting Darmstadt linear electron accelerator S-DALINAC. 52Cr; deduced levels, PDR, J, π, Γ0, B(E1), B(M1), reduced transition widths. Comparison with microscopic QPM calculations.

doi: 10.1103/PhysRevC.88.054316
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2013RO28      Phys.Rev. C 88, 044331 (2013)

C.Romig, J.Beller, J.Glorius, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, V.Yu.Ponomarev, A.Sauerwein, D.Savran, M.Scheck, L.Schnorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, A.Zilges, M.Zweidinger

Low-lying dipole strength of the open-shell nucleus 94Mo

NUCLEAR REACTIONS 94Mo(γ, γ'), (polarized γ, γ'), E=5.47, 6.05, 6.44, 6.61, 6.89, 7.65, 8.70 MeV; measured Eγ, Iγ, γγ(θ), γ-polarization asymmetry using DHIPS setup at S-DALINAC, and HiγS at TUNL and DFELL facilities. 94Mo; deduced levels, J, π, Γ20/Γ, branching ratios, B(E1), B(M1), E1 strength distributions, feeding of first 2+ level, elastic σ. Comparison with QPM calculations, and statistical model using DICEBOX computer code.

doi: 10.1103/PhysRevC.88.044331
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2013SC08      Phys.Rev. C 87, 051304 (2013)

M.Scheck, V.Yu.Ponomarev, T.Aumann, J.Beller, M.Fritzsche, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, R.Raut, C.Romig, G.Rusev, D.Savran, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, M.Zweidinger

Decay pattern of the pygmy dipole resonance in 60Ni

NUCLEAR REACTIONS 60Ni(polarized γ, γ'), E=7.65-9.66 MeV; measured Eγ, Iγ, M1 and E1 strengths at HIγS-TUNL facility. 60Ni; deduced levels, J, π, PDR, branching ratios, number of 1+ and 1- states. Comparison with quasiparticle phonon model (QPM) calculations.

doi: 10.1103/PhysRevC.87.051304
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0189. Data from this article have been entered in the XUNDL database. For more information, click here.


2013SC20      Phys.Rev. C 88, 044304 (2013)

M.Scheck, V.Yu.Ponomarev, M.Fritzsche, J.Joubert, T.Aumann, J.Beller, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, R.Raut, C.Romig, G.Rusev, D.Savran, L.Schorrenberger, K.Sonnabend, A.P.Tonchev, W.Tornow, H.R.Weller, A.Zilges, M.Zweidinger

Photoresponse of 60Ni below 10-MeV excitation energy: Evolution of dipole resonances in fp-shell nuclei near N=Z

NUCLEAR REACTIONS 60Ni(γ, γ'), (polarized γ, γ'), E<10 MeV; 58Ni(polarized γ, γ'), E<10 MeV; measured Eγ, Iγ, γγ(θ), γ-ray polarization, integrated σ, γ-branching ratios using High-intensity photon setup at S-DALINAC facility. 58,60Ni; deduced levels, J, π, width, level half-lives, B(E1), B(M1), B(E2), E1 and M1 strength distributions. Thomas-Reiche-Kuhn sum rule. Pygmy-dipole resonances. Comparison with QPM calculations.

doi: 10.1103/PhysRevC.88.044304
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Data from this article have been entered in the EXFOR database. For more information, access X4 datasetL0192. Data from this article have been entered in the XUNDL database. For more information, click here.


2012BE39      J.Phys.:Conf.Ser. 366, 012003 (2012)

J.Beller, J.Wagner, M.Ahmed, D.Deleanu, D.M.Filipescu, T.Glodariu, J.Isaak, J.H.Kelley, E.Kwan, N.Pietralla, R.Raut, C.Romig, G.Rusev, M.Scheck, S.C.Stave, A.Tonchev, W.Tornow, H.R.Weller, N.-V.Zamfir, M.Zweidinger

Energy separation of the 1+/1- parity doublet in 20Ne

NUCLEAR REACTIONS 28Si, 20Ne(polarized γ, γ'), E=11.26 MeV; measured reaction products, Eγ, Iγ. 20Ne; deduced integrated σ, energy separation, J, π of parity doublet states, effective nuclear enhancement factor.

doi: 10.1088/1742-6596/366/1/012003
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2012ZW01      J.Phys.:Conf.Ser. 366, 012054 (2012)

M.Zweidinger, J.Beller, J.Isaak, N.Pietralla, V.Yu.Ponomarev, C.Romig, D.Savran, M.Scheck, K.Sonnabend

Photon scattering off 94Zr and 96Zr

NUCLEAR REACTIONS 94,96Zr(γ, γ'), E=0-10 MeV; calculated dipole excitation strength B(E1), B(M1) energy distribution; calculated B(E1), B(M1) using QPM. Compared with data. Analysis still in progress.

doi: 10.1088/1742-6596/366/1/012054
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2009BO10      Phys.Rev. C 79, 034307 (2009)

J.Bonnet, A.Krugmann, J.Beller, N.Pietralla, R.V.Jolos

E0 transition strengths from X(5) to the rigid rotor

NUCLEAR STRUCTURE 152Sm, 156Gd; calculated E0 transition strengths and stiffness parameters between ground-state and β bands within the framework of confined β soft rotor model. Comparison with experimental data.

doi: 10.1103/PhysRevC.79.034307
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2008SA35      Phys.Lett. B 669, 19 (2008)

T.R.Saito, N.Saito, K.Starosta, J.Beller, N.Pietralla, H.J.Wollersheim, D.L.Balabanski, A.Banu, R.A.Bark, T.Beck, F.Becker, P.Bednarczyk, K.-H.Behr, G.Benzoni, P.G.Bizzeti, C.Boiano, A.Bracco, S.Brambilla, A.Brunle, A.Burger, L.Caceres, F.Camera, F.C.L.Crespi, P.Doornenbal, A.B.Garnsworthy, H.Geissel, J.Gerl, M.Gorska, J.Grebosz, G.Hagemann, J.Jolie, M.Kavatsyuk, O.Kavatsyuk, T.Koike, I.Kojouharov, N.Kurz, J.Leske, G.Lo Bianco, A.Maj, S.Mallion, S.Mandal, M.Maliage, T.Otsuka, C.M.Petrache, Zs.Podolyak, W.Prokopowicz, G.Rainovski, P.Reiter, A.Richard, H.Schaffner, S.Schielke, G.Sletten, N.J.Thompson, D.Tonev, J.Walker, N.Warr, O.Wieland, Q.Zhong

Yrast and non-yrast 2+ states of 134Ce and 136Nd populated in relativistic Coulomb excitation

NUCLEAR REACTIONS Au(134Ce, 134CE'), (136ND, 136ND'), E≈ 126 MeV/nucleon; measured Eγ, Iγ, γγ-, (particle)γ-coin. 134Ce, 136Nd; deduced B(E2).

doi: 10.1016/j.physletb.2008.09.027
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Note: The following list of authors and aliases matches the search parameter J.Beller: , J.D.BELLER