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- C. Ritter2 profiles20 · h 50
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- Centre National de la Recherche ScientifiqueFR146 papers
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7 papers · 1 filter
decay study of the Mn - Fe - Co - Ni chain
M. Stryjczyk, Y. Tsunoda, I. G. Darby +19
Background: Shell evolution can impact the structure of the nuclei and lead to effects such as shape coexistence. The nuclei around Ni represent an excellent study case, how…
Magnetic excitations in frustrated fcc type-III antiferromagnet MnS
T. Chatterji, L. P. Regnault, S. Ghosh +1
Spin wave dispersion in the frustrated fcc type-III antiferromagnet MnS has been determined by inelastic neutron scattering using a triple-axis spectrometer. Existence of multi…
Exotic decay channels are not the cause of the neutron lifetime anomaly
D. Dubbers, H. Saul, B. Märkisch +2
Since long neutron lifetimes measured with a beam of cold neutrons are significantly different from lifetimes measured with ultracold neutrons bottled in a trap. It is often specul…
Structural Transition Kinetics and Activated Behavior in the Superconducting Vortex Lattice
E. R. Louden, C. Rastovski, S. J. Kuhn +5
Using small-angle neutron scattering, we investigated the behavior of a metastable vortex lattice state in MgB2 as it is driven towards equilibrium by an AC magnetic field. This sh…
Measurement of the Weak Axial-Vector Coupling Constant in the Decay of Free Neutrons Using a Pulsed Cold Neutron Beam
Bastian Märkisch, Holger Mest, Heiko Saul +8
We present a precision measurement of the axial-vector coupling constant in the decay of polarized free neutrons. For the first time, a pulsed cold neutron beam was used for…
Exact diagonalization study of the Hubbard-parametrized four-spin ring exchange model on a square lattice
C. B. Larsen, A. T. Rømer, S. Janas +5
We have used exact numerical diagonalization to study the excitation spectrum and the dynamic spin correlations in the next-next-nearest neighbor Heisenberg antiferromagnet…