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NSR database version of April 11, 2024.

Search: Author = L.Willmann

Found 12 matches.

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2020AN04      Phys.Rev. C 101, 054313 (2020)

A.Antognini, N.Berger, T.E.Cocolios, R.Dressler, R.Eichler, A.Eggenberger, P.Indelicato, K.Jungmann, C.H.Keitel, K.Kirch, A.Knecht, N.Michel, J.Nuber, N.S.Oreshkina, A.Ouf, A.Papa, R.Pohl, M.Pospelov, E.Rapisarda, N.Ritjoho, S.Roccia, N.Severijns, A.Skawran, S.M.Vogiatzi, F.Wauters, L.Willmann

Measurement of the quadrupole moment of 185Re and 187Re from the hyperfine structure of muonic X rays

ATOMIC PHYSICS 185,187Re, 208Pb(μ-, μ-'), E at 29 MeV/c, [negative muon beam from the decay of pions produced in C(p, π), E=590 MeV]; measured Eγ, Iγ, energy and intensities of muonic x-rays using two HPGe detectors at the HIPA facility of Paul Scherrer Institut; deduced hyperfine splitting of the 5g to 4f muonic atom transitions, and compared to state-of-the-art atomic theoretical predictions; extracted spectroscopic quadrupole moments for ground states of 185Re and 187Re.

NUCLEAR MOMENTS 185,187Re; measured muonic atom hyperfine structure; deduced spectroscopic quadrupole moments of ground states. Comparison with previous experimental measurement using natural Re target, and with theoretical predictions.

doi: 10.1103/PhysRevC.101.054313
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2018DI05      Phys.Rev. A 97, 032508 (2018)

E.A.Dijck, A.Mohanty, N.Valappol, M.Nunez Portela, L.Willmann, K.Jungmann

Lifetime of the 5d2D5/2 level of 138Ba+ from quantum jumps with single and multiple Ba+ ions

ATOMIC PHYSICS 138Ba; measured quantum jump data; deduced level T1/2. Comparison with available data.

doi: 10.1103/physreva.97.032508
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2016RE01      Phys.Lett. B 752, 296 (2016)

J.Refsgaard, O.S.Kirsebom, E.A.Dijck, H.O.U.Fynbo, M.V.Lund, M.N.Portela, R.Raabe, G.Randisi, F.Renzi, S.Sambi, A.Sytema, L.Willmann, H.W.Wilschut

Measurement of the branching ratio for β-delayed α decay of 16N

RADIOACTIVITY 16N(β-α) [from C, 2H(15N, X), E=80 MeV]; measured decay products, Eα, Iα, Eβ, Iβ; deduced βα branching ratio and its uncertainties, impact on S-factor. Comparison with available data.

doi: 10.1016/j.physletb.2015.11.047
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2016SY01      Phys.Rev. C 94, 025503 (2016)

A.Sytema, J.E.van den Berg, O.Boll, D.Chernowitz, E.A.Dijck, J.O.Grasdijk, S.Hoekstra, K.Jungmann, S.C.Mathavan, C.Meinema, A.Mohanty, S.E.Muller, J.P.Noordmans, M.Nunez Portela, C.J.G.Onderwater, C.Pijpker, R.G.E.Timmermans, K.K.Vos, L.Willmann, H.W.Wilschut

Test of Lorentz invariance in β decay of polarized 20Na

RADIOACTIVITY 20Na(β+)[polarized 20Na source from 1H(20Ne, n), E=20 MeV/nucleon at AGOR-KVI cyclotron facility, polarization by optical pumping]; measured Eβ, Iβ, Eγ, Iγ, polarization, dependence of half-life of 20Na nuclei on the nuclear spin direction; deduced no significant violation of Lorentz invariance (LIV) in weak interactions.

doi: 10.1103/PhysRevC.94.025503
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2015DI06      Phys.Rev. A 91, 060501R (2015)

E.A.Dijck, M.Nunez Portela, A.T.Grier, K.Jungmann, A.Mohanty, N.Valappol, L.Willmann

Determination of transition frequencies in a single 138Ba+ ion

ATOMIC PHYSICS 138Ba; measured an optical frequency comb; deduced transition frequencies between low-lying energy levels in a single trapped ion. An eight-level optical Bloch model.

doi: 10.1103/PhysRevA.91.060501
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2014BR06      Phys.Rev.Lett. 112, 212301 (2014)

L.J.Broussard, H.O.Back, M.S.Boswell, A.S.Crowell, P.Dendooven, G.S.Giri, C.R.Howell, M.F.Kidd, K.Jungmann, W.L.Kruithof, A.Mol, C.J.G.Onderwater, R.W.Pattie, Jr., P.D.Shidling, M.Sohani, D.J.van der Hoek, A.Rogachevskiy, E.Traykov, O.O.Versolato, L.Willmann, H.W.Wilschut, A.R.Young

Measurement of the Half-Life of the T= 1/2 Mirror Decay of 19Ne and its Implication on Physics Beyond the Standard Model

RADIOACTIVITY 19Ne(EC) [from 19F(p, n), E=10.5 MeV/nucleon]; measured decay products, Eγ, Iγ; deduced T1/2. Comparison with available data and systematics.

doi: 10.1103/PhysRevLett.112.212301
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2010WI07      Pramana 75, 163 (2010)

H.W.Wilschut, U.Dammalapati, D.J.Van Der Hoek, K.Jungmann, W.Kruithof, C.J.G.Onderwater, B.Santra, P.D.Shidling, L.Willmann

β-Decay and the electric dipole moment: Searches for time-reversal violation in radioactive nuclei and atoms

RADIOACTIVITY 21Na, 213Ra(EC), 225Ra(β-), 213Ra(α); measured recoiling ion in coincidence with β-particle, hfs; deduced correlation parameters, hyperfine splitting, transition fluorescence.

doi: 10.1007/s12043-010-0075-y
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2010WI13      Nucl.Phys. A844, 143c (2010)

H.W.Wilschut, D.J.van der Hoek, K.Jungmann, W.Kruithof, C.J.G.Onderwater, B.Santra, P.Shidling, L.Willmann

β-decay and the electric dipole moment: searches for time-reversal violation in radioactive nuclei and atoms

doi: 10.1016/j.nuclphysa.2010.05.025
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2007TR01      Nucl.Instrum.Methods Phys.Res. A572, 580 (2007)

E.Traykov, A.Rogachevskiy, M.Boswell, U.Dammalapati, P.Dendooven, O.C.Dermois, K.Jungmann, C.J.G.Onderwater, M.Sohani, L.Willmann, H.W.Wilschut, A.R.Young

Production of radioactive nuclides in inverse reaction kinematics

NUCLEAR REACTIONS 1H(20Ne, 20Na), E=22.3 MeV/nucleon; 2H(20Ne, 21Na), E=22.3 MeV/nucleon; 1H(21Ne, 21Na), E=43 MeV/nucleon; measured particle spectra, yields.

doi: 10.1016/j.nima.2006.11.053
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2003BE56      Nucl.Phys. A721, 1107c (2003)

G.P.A.Berg, P.Dendooven, O.Dermois, M.N.Harakeh, R.Hoekstra, S.Hoekstra, K.Jungmann, S.Kopecky, V.Kravchuk, R.Morgenstern, A.Rogachevskiy, L.Willmann, H.W.Wilschut

TRIμP - A Radioactive Isotope Trapping Facility at KVI

doi: 10.1016/S0375-9474(03)01296-X
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2003JU03      Phys.Scr. T104, 178 (2003)

K.Jungmann, G.P.Berg, U.Dammalapati, P.Dendooven, O.Dermois, M.N.Harakeh, R.Hoekstra, R.Morgenstern, A.Rogachevskiy, M.Sanchez-Vega, R.Timmermans, E.Traykov, L.Willmann, H.W.Wilschut

TRIμP-Trapped Radioactive Atoms-μicrolaboratories for Fundamental Physics

doi: 10.1238/Physica.Topical.104a00178
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1994MA58      Phys.Lett. 187A, 247 (1994)

F.E.Maas, B.Braun, H.Geerds, K.Jungmann, B.E.Matthias, G.zu Putlitz, I.Reinhard, W.Schwarz, L.Willmann, L.Zhang, P.E.G.Baird, P.G.H.Sandars, G.S.Woodman, G.H.Eaton, P.Matousek, W.T.Toner, M.Towrie, J.R.M.Barr, A.I.Ferguson, M.A.Persaud, E.Riis, D.Berkeland, M.G.Boshier, V.W.Hughes, K.A.Woodle

A Measurement of the 1S-2S Transition Frequency in Muonium

doi: 10.1016/0375-9601(94)90903-2
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