Title: Nuclear magnetic moment of As-69 from on-line beta-NMR on oriented nuclei
Authors: Golovko, Viktor V. ×
Kraev, Il´Ya
Phalet, Titia
Severijns, Natalis
Zakoucky, D
Vénos, D
Herzog, P
Tramm, C
Srnka, D
Honusek, M
Köster, U
Delauré, B
Beck, Marcus
Kozlov, VY
Lindroth, A
Coeck, Sam #
Issue Date: Dec-2005
Publisher: The American Physical Society
Series Title: Physical Review C vol:72
Article number: 064316
Abstract: A precise value for the magnetic moment of the As-69 5/2(-) ground state has been obtained from nuclear magnetic resonance on oriented nuclei (NMR/ON) using the NICOLE He-3-He-4 dilution refrigerator setup at ISOLDE/CERN. The NMR/ON signal was observed by monitoring the anisotropy of the As-69 beta particles. The center frequency nu[B-ext = 0.0994(10)T] = 169.98(9) MHz corresponds to mu[As-69] = +1.6229(16)mu(N). This result differs considerably from the pi f(5/2) single-particle value obtained with g factors for a free proton but is in reasonable agreement with the value obtained with effective g factors and with values from a core polarization calculation and from calculations in the framework of the interacting boson-fermion model. Assuming a single exponential spin-lattice relaxation behavior a relaxation time T-1' = 10(25) s was observed for (AsFe)-As-69 at a temperature of about 20 mK in a magnetic field B = 0.1 T.
ISSN: 0556-2813
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
× corresponding author
# (joint) last author

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