NSR Query Results
Output year order : Descending NSR database version of April 26, 2024. Search: Author = P.Ries Found 9 matches. 2021FR01 Phys.Rev.Lett. 126, 102501 (2021) U.Friman-Gayer, C.Romig, T.Huther, K.Albe, S.Bacca, T.Beck, M.Berger, J.Birkhan, K.Hebeler, O.J.Hernandez, J.Isaak, S.Konig, N.Pietralla, P.C.Ries, J.Rohrer, R.Roth, D.Savran, M.Scheck, A.Schwenk, R.Seutin, V.Werner Role of Chiral Two-Body Currents in 6Li Magnetic Properties in Light of a New Precision Measurement with the Relative Self-Absorption Technique RADIOACTIVITY 6Li(IT) [from 6Li(γ, γ'), E<7.1 MeV]; measured decay products, Eγ, Iγ; deduced B(M1), decay width. Comparison with ab initio calculations based on chiral effective field theory that take into account contributions to the magnetic dipole operator beyond leading order.
doi: 10.1103/PhysRevLett.126.102501
2020AK06 J.Phys.(London) G47, 05LT01 (2020) H.Akimune, H.Ejiri, F.Hattori, C.Agodi, M.Alanssari, F.Cappuzzello, D.Carbone, M.Cavallaro, G.Colo, F.Diel, C.A.Douma, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, G.Gey, M.N.Harakeh, K.Hatanaka, K.Heguri, M.Holl, A.Inoue, N.Kalantar-Nayestanaki, Y.F.Niu, P.Puppe, P.C.Ries, A.Tamii, V.Werner, K.Zuber Spin-dipole nuclear matrix element for the double beta decay of 76Ge by the (3He, t) charge-exchange reaction NUCLEAR REACTIONS 74,76Ge(3He, t), E=420 MeV; measured reaction products; deduced yields, σ(θ), spin-dipole nuclear matrix elements, neutrinoless double-beta decay nuclear matrix elements.
doi: 10.1088/1361-6471/ab7a87
2020DA10 Phys.Rev. C 102, 011302 (2020) A.D'Alessio, T.Mongelli, M.Arnold, S.Bassauer, J.Birkhan, I.Brandherm, M.Hilcker, T.Huther, J.Isaak, L.Jurgensen, T.Klaus, M.Mathy, P.von Neumann-Cosel, N.Pietralla, V.Yu.Ponomarev, P.C.Ries, R.Roth, M.Singer, G.Steinhilber, K.Vobig, V.Werner Precision measurement of the E2 transition strength to the 2+1 state of 12C NUCLEAR REACTIONS 12C(e, e'), E=42.5 MeV; measured scattered E(e), I(e) using the LINTOTT spectrometer at the Darmstadt S-DALINAC facility; deduced form factor, B(E2) and quadrupole moment for the first 2+ state in 12C. Comparison in-medium no-core shell model (IM-NCSM) calculations with NLO to N3LO interactions, and with previous experimental results.
doi: 10.1103/PhysRevC.102.011302
2020DO06 Eur.Phys.J. A 56, 51 (2020) C.A.Douma, C.Agodi, H.Akimune, M.Alanssari, F.Cappuzzello, D.Carbone, M.Cavallaro, G.Colo, F.Diel, H.Ejiri, D.Frekers, H.Fujita, Y.Fujita, M.Fujiwara, G.Gey, M.N.Harakeh, K.Hatanaka, F.Hattori, K.Heguri, M.Holl, A.Inoue, N.Kalantar-Nayestanaki, Y.F.Niu, P.Puppe, P.C.Ries, A.Tamii, V.Werner, R.G.T.Zegers, K.Zuber Gamow-Teller strength distributions of 116Sb and 122Sb using the (3He, t) charge-exchange reaction
doi: 10.1140/epja/s10050-020-00044-9
2019GA26 Phys.Rev. C 100, 034305 (2019) U.Gayer, T.Beck, M.Bhike, J.Isaak, N.Pietralla, P.C.Ries, D.Savran, M.Schilling, W.Tornow, V.Werner Experimental M1 response of 40Ar as a benchmark for neutrino-nucleus scattering calculations NUCLEAR REACTIONS 40Ar(polarized γ, γ'), E=4.44, 5.40, 5.65, 5.90, 6.10, 6.30, 6.50, 6.70, 6.90, 7.22, 7.55 MeV from High-Intensity γ-Ray Source (HIγS) at TUNL; measured Eγ, Iγ, azimuthal asymmetry using four HPGe detectors. 40Ar; deduced levels, J, π, integrated cross sections, lower limits for B(E1) and B(M1), average branching ratio to the first 2+ state, B(E1), B(M1), total M1 strength; results provide constraints on theoretical cross section of solar and supernova neutrinos with 40Ar. Comparison with large-scale shell model shell-model calculations for 1+ states in the sdfp space. Comparison with previous experimental results and evaluated data in the ENSDF database. Benchmarking of inelastic neutral current neutrino-nucleus scattering cross sections.
doi: 10.1103/PhysRevC.100.034305
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
2018DI14 Phys.Rev. C 98, 054314 (2018) B.Dietz, B.A.Brown, U.Gayer, N.Pietralla, V.Yu.Ponomarev, A.Richter, P.C.Ries, V.Werner Chaos and regularity in the spectra of the low-lying dipole excitations of 50, 52, 54Cr NUCLEAR STRUCTURE 50,52,54Cr; analyzed experimental B(M1) strengths for 1+ states from orbital magnetic-dipole scissors mode, and sizable spin-flip magnetic-dipole strength, and experimental B(E1) strengths for 1- states belonging to the pygmy dipole resonances (PDRs) through random matrix theory (RMT) to analyze fluctuation properties in the subspectra of the energy levels; deduced Gaussian orthogonal ensemble (GOE) for 1+ states, and nearly Poissonian behavior for the 1- states, suggesting collective behavior of the PDRs. Relevance to nuclear resonance fluorescence experiments at the Superconducting Darmstadt Electron Linear Accelerator (S-DALINAC), and the high intensity γ-ray source (HIγS) of the Triangle Universities Nuclear Laboratory (TUNL).
doi: 10.1103/PhysRevC.98.054314
2018WI07 Phys.Rev. C 98, 034315 (2018) J.Wilhelmy, A.Brown, P.Erbacher, U.Gayer, J.Isaak, Krishichayan, B.Loher, M.Muscher, H.Pai, N.Pietralla, P.Ries, D.Savran, P.Scholz, M.Spieker, W.Tornow, V.Werner, A.Zilges Investigation of J=1 states and their γ-decay behavior in 52Cr NUCLEAR REACTIONS 52Cr(polarized γ, γ'), E=5.5-9.2 MeV; measured Eγ, Iγ of primary and secondary γ rays, energy integrated σ in nuclear resonance fluorescence (NRF) experiments using γ3 array at the HIγS-TUNL facility. 52Cr; deduced levels, J, π, Γ0, γ-branching ratios, B(M1), B(E1), summed M1 strength. Comparison with shell model calculations, and previous experimental results.
doi: 10.1103/PhysRevC.98.034315
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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