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NSR database version of April 27, 2024.

Search: Author = F.Sommer

Found 11 matches.

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2023PL01      Phys.Rev.Lett. 131, 222502 (2023)

P.Plattner, E.Wood, L.Al Ayoubi, O.Beliuskina, M.L.Bissell, K.Blaum, P.Campbell, B.Cheal, R.P.de Groote, C.S.Devlin, T.Eronen, L.Filippin, R.F.Garcia Ruiz, Z.Ge, S.Geldhof, W.Gins, M.Godefroid, H.Heylen, M.Hukkanen, P.Imgram, A.Jaries, A.Jokinen, A.Kanellakopoulos, A.Kankainen, S.Kaufmann, K.Konig, A.Koszorus, S.Kujanpaa, S.Lechner, S.Malbrunot-Ettenauer, P.Muller, R.Mathieson, I.Moore, W.Nortershauser, D.Nesterenko, R.Neugart, G.Neyens, A.Ortiz-Cortes, H.Penttila, I.Pohjalainen, A.Raggio, M.Reponen, S.Rinta-Antila, L.V.Rodriguez, J.Romero, R.Sanchez, F.Sommer, M.Stryjczyk, V.Virtanen, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

Nuclear Charge Radius of 26mAl and Its Implication for Vud in the Quark Mixing Matrix

NUCLEAR MOMENTS 26,26m,27Al [from 27Al(p, d), E=25 MeV]; measured frequencies; deduced resonance spectrum, isotope shifts, mean square charge radii, log ft values. Collinear laser spectroscopy. The COLLAPS beamline at ISOLDE-CERN and the IGISOL CLS beamline.

doi: 10.1103/PhysRevLett.131.222502
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2022BA15      Phys.Lett. B 829, 137064 (2022)

S.W.Bai, A.Koszorus, B.S.Hu, X.F.Yang, J.Billowes, C.L.Binnersley, M.L.Bissell, K.Blaum, P.Campbell, B.Cheal, T.E.Cocolios, R.P.de Groote, C.S.Devlin, K.T.Flanagan, R.F.Garcia Ruiz, H.Heylen, J.D.Holt, A.Kanellakopoulos, J.Kramer, V.Lagaki, B.Maass, S.Malbrunot-Ettenauer, T.Miyagi, R.Neugart, G.Neyens, W.Nortershauser, L.V.Rodriguez, F.Sommer, A.R.Vernon, S.J.Wang, X.B.Wang, S.G.Wilkins, Z.Y.Xu, C.X.Yuan

Electromagnetic moments of scandium isotopes and N=28 isotones in the distinctive 0f7/2 orbit

NUCLEAR MOMENTS 41,43,45,46,47,49Sc; measured frequencies; deduced hfs constants, electromagnetic dipole and quadrupole moments. Comparison with theoretical calculations. Two collinear laser spectroscopy (CLS) setups, COLLAPS and CRIS at ISOLDE-CERN.

doi: 10.1016/j.physletb.2022.137064
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2022GE04      Phys.Rev.Lett. 128, 152501 (2022)

S.Geldhof, M.Kortelainen, O.Beliuskina, P.Campbell, L.Caceres, L.Canete, B.Cheal, K.Chrysalidis, C.S.Devlin, R.P.de Groote, A.de Roubin, T.Eronen, Z.Ge, W.Gins, A.Koszorus, S.Kujanpaa, D.Nesterenko, A.Ortiz-Cortes, I.Pohjalainen, I.D.Moore, A.Raggio, M.Reponen, J.Romero, F.Sommer

Impact of Nuclear Deformation and Pairing on the Charge Radii of Palladium Isotopes

NUCLEAR MOMENTS 98,99,100,101,102Pd, 104,105,106Pd, 108,110,112,114,116,118Pd; measured frequencies; deduced isotope shifts and resulting changes in mean-square charge radii, precise relationship between nuclear quadrupole deformation and the nuclear size. Comparison with quadrupole deformation energy calculations.

doi: 10.1103/PhysRevLett.128.152501
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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
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2021HE04      Phys.Rev. C 103, 014318 (2021)

H.Heylen, C.S.Devlin, W.Gins, M.L.Bissell, K.Blaum, B.Cheal, L.Filippin, R.F.Garcia Ruiz, M.Godefroid, C.Gorges, J.D.Holt, A.Kanellakopoulos, S.Kaufmann, A.Koszorus, K.Konig, S.Malbrunot-Ettenauer, T.Miyagi, R.Neugart, G.Neyens, W.Nortershauser, R.Sanchez, F.Sommer, L.V.RodrIguez, L.Xie, Z.Y.Xu, X.F.Yang, D.T.Yordanov

High-resolution laser spectroscopy of 27-32Al

NUCLEAR MOMENTS 27,28,29,30,31,32Al; measured hyperfine structure spectra of the 3s23p2P3/20 to 3s24s2S1/2 atomic transition using collinear laser spectroscopy at the COLLAPS-ISOLDE-CERN facility; deduced hyperfine parameters, magnetic dipole moments and spectroscopic quadrupole moments with reference to those for 27Al, isotope shifts and mean-square charge radii relative to 27Al. Comparison with theoretical calculations using ab initio valence space in-medium similarity renormalization group method (VS-IMSRG) with multiple sets of two- and three-nucleon forces from chiral effective field theory, and with previous available experimental results. Neutral atoms of 27,28,29,30,31,32Al produced in U(p, X), E=1.4-GeV, using uranium carbide target, followed by extraction from the target, ionized by a resonance ionization laser ion source (RILIS), accelerated to 30 keV, and finally mass separated.

doi: 10.1103/PhysRevC.103.014318
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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
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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
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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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2019KL06      Phys.Rev. C 99, 061301 (2019)

A.Klose, K.Minamisono, A.J.Miller, B.A.Brown, D.Garand, J.D.Holt, J.D.Lantis, Y.Liu, B.Maass, W.Nortershauser, S.V.Pineda, D.M.Rossi, A.Schwenk, F.Sommer, C.Sumithrarachchi, A.Teigelhofer, J.Watkins

Ground-state electromagnetic moments of 37Ca

NUCLEAR MOMENTS 37,39Ca; measured hyperfine structure spectra using the collinear laser spectroscopy technique at NSCL-BECOLA facility; deduced hyperfine coupling constants, and isoscalar- and isovector-magnetic moment of the ground states. 37,39Ca produced in 9Be(40Ca, X), E=140 MeV/nucleon reaction, and separation of fragments using A1900 fragment separator at NSCL-MSU. Comparison with shell model calculations using the universal sd model-space Hamiltonians (USDA/B). Systematics of experimental and theoretical magnetic moments of ground states of 37,39Ca, 37Cl and 39K.

doi: 10.1103/PhysRevC.99.061301
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2019MA33      Phys.Rev.Lett. 122, 182501 (2019)

B.Maass, T.Huther, K.Konig, J.Kramer, J.Krause, A.Lovato, P.Muller, K.Pachucki, M.Puchalski, R.Roth, R.Sanchez, F.Sommer, R.B.Wiringa, W.Nortershauser

Nuclear Charge Radii of 10, 11B

NUCLEAR MOMENTS 10,11B; measured frequencies; deduced nuclear charge radii by combining high-accuracy ab initio mass-shift calculations and a high-accuracy measurement of the isotope shift.

doi: 10.1103/PhysRevLett.122.182501
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1992MA22      Nucl.Instrum.Methods Phys.Res. B66, 250 (1992)

Ph.Massiot, F.Sommer, M.Thellier, C.Ripoll

Simultaneous Determination of 14N and 15N by Elastic Backscattering and Nuclear Reaction: Application to biology

NUCLEAR REACTIONS, ICPND 14N(p, p), 15N(p, αγ), E=2.9-3.35 MeV; measured yield curves, γ-spectra. Nuclear microprobe based simultaneous localization, quantification of 14,15N in plant cells.

doi: 10.1016/0168-583X(92)96159-V
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