NSR Query Results
Output year order : Descending NSR database version of April 27, 2024. Search: Author = R.Powel Found 7 matches. 2023DO09 Phys.Rev. A 108, 052816 (2023) A.Dockery, K.Konig, J.Lantis, Y.Liu, K.Minamisono, S.Pineda, R.Powel Hyperfine structure of low-lying triplet states in 45Sc II ATOMIC PHYSICS 45Sc; measured frequencies; deduced the hyperfine magnetic dipole (A) and the electric quadrupole (B) coupling constants. Collinear laser spectroscopy.
doi: 10.1103/PhysRevA.108.052816
2023KO19 Phys.Rev.Lett. 131, 102501 (2023) K.Konig, S.Fritzsche, G.Hagen, J.D.Holt, A.Klose, J.Lantis, Y.Liu, K.Minamisono, T.Miyagi, W.Nazarewicz, T.Papenbrock, S.V.Pineda, R.Powel, P.-G.Reinhard Surprising Charge-Radius Kink in the Sc Isotopes at N=20 NUCLEAR REACTIONS Be(40Ca, X)40Sc/41Sc, E=140 MeV/nucleon; measured frequencies; deduced resonance spectra, charge radii using collinear laser spectroscopy, kink at neutron shell closure. Comparison with available data. The National Superconducting Cyclotron Laboratory.
doi: 10.1103/PhysRevLett.131.102501
2022PO01 Phys.Rev. C 105, 034310 (2022) R.Powel, B.A.Brown, J.D.Holt, A.Klose, K.Konig, J.Lantis, K.Minamisono, T.Miyagi, S.Pineda Ground state magnetic dipole moment of 40Sc NUCLEAR MOMENTS 40,41Sc; measured hyperfine structure spectra; deduced hyperfine coupling constants, magnetic dipole moments, electric quadrupole moments. Comparison to shell-model and multishell in-medium similarity renormalization group (IMSRG) calculations. Collinear laser spectroscopy technique at NSCL-BECOLA facility. Scandium beam produced in 9Be(40Ca, X), E=140 MeV/nucleon reaction, and transported using A1900 fragment separator at NSCL-MSU. Systematics of experimental and theoretical magnetic moments of ground states of 40,41Sc, 39,41Ca, 39,40K.
doi: 10.1103/PhysRevC.105.034310
2022SO14 Phys.Rev.Lett. 129, 132501 (2022) F.Sommer, K.Konig, D.M.Rossi, N.Everett, D.Garand, R.P.de Groote, J.D.Holt, P.Imgram, A.Incorvati, C.Kalman, A.Klose, J.Lantis, Y.Liu, A.J.Miller, K.Minamisono, T.Miyagi, W.Nazarewicz, W.Nortershauser, S.V.Pineda, R.Powel, P.-G.Reinhard, L.Renth, E.Romero-Romero, R.Roth, A.Schwenk, C.Sumithrarachchi, A.Teigelhofer Charge Radii of 55, 56Ni Reveal a Surprisingly Similar Behavior at N=28 in Ca and Ni Isotopes NUCLEAR MOMENTS 54,55,56,57,58,59,60Ni; measured frequencies; deduced Isotope shifts, differential ms charge radii, and absolute rms charge radii. Comparison with nuclear density functional theory (DFT) calculations. National Superconducting Cyclotron Laboratory (NSCL) at Michigan State University (MSU) and collinear laser spectroscopy (CLS) at the BECOLA facility.
doi: 10.1103/PhysRevLett.129.132501
2021KO18 Phys.Rev. C 103, 054305 (2021) K.Konig, F.Sommer, J.Lantis, K.Minamisono, W.Nortershauser, S.Pineda, R.Powel Isotope-shift measurements and King-fit analysis in nickel isotopes ATOMIC PHYSICS 58,60,62,64Ni; measured isotope-shifts in the 3d94s3D3 to 3d94p3P2 atomic transitions between the stable even-even nickel isotopes using BEam COoling and LAser spectroscopy (BECOLA) facility at the NSCL/FRIB (MSU); deduced differential mean-square charge radii using detailed King-fit analysis in extracting mass-shift and field-shift parameters. Comparison with previous experimental data.
doi: 10.1103/PhysRevC.103.054305
2021PI10 Phys.Rev.Lett. 127, 182503 (2021) S.V.Pineda, K.Konig, D.M.Rossi, B.A.Brown, A.Incorvati, J.Lantis, K.Minamisono, W.Nortershauser, J.Piekarewicz, R.Powel, F.Sommer Charge Radius of Neutron-Deficient 54Ni and Symmetry Energy Constraints Using the Difference in Mirror Pair Charge Radii NUCLEAR REACTIONS 9Be(58Ni, 54Ni), E not given; measured resonance spectra, frequencies. 54Ni; deduced nuclear root-mean-square charge radius. Comparison with available data. BECOLA, National Superconducting Cyclotron Laboratory at Michigan State University.
doi: 10.1103/PhysRevLett.127.182503
2020BR12 Phys. Rev. Res. 2, 022035 (2020) B.A.Brown, K.Minamisono, J.Piekarewicz, H.Hergert, D.Garand, A.Klose, K.Konig, J.D.Lantis, Y.Liu, B.Maass, A.J.Miller, W.Nortershauser, S.V.Pineda, R.C.Powel, D.M.Rossi, F.Sommer, C.Sumithrarachchi, A.Teigelhofer, J.Watkins, R.Wirth Implications of the 36Ca-36S and 38Ca-38Ar difference in mirror charge radii on the neutron matter equation of state NUCLEAR STRUCTURE 36Ca, 36S, 38Ca, 38Ar; analyzed available data; deduced differences in charge radii between mirror nuclei, the slope of the symmetry energy L at the nuclear saturation density. Comparison with theoretical calculations of charge radii, differences and symmetry energy.
doi: 10.1103/PhysRevResearch.2.022035
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