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Title: Nuclear magnetic moment of {sup 69}As from on-line {beta}-NMR on oriented nuclei

Abstract

A precise value for the magnetic moment of the {sup 69}As 5/2{sup -} ground state has been obtained from nuclear magnetic resonance on oriented nuclei (NMR/ON) using the NICOLE {sup 3}He-{sup 4}He dilution refrigerator setup at ISOLDE/CERN. The NMR/ON signal was observed by monitoring the anisotropy of the {sup 69}As {beta} particles. The center frequency {nu}[B{sub ext}=0.0994(10)T]=169.98(9) MHz corresponds to {mu}[{sup 69}As]=+1.6229(16){mu}{sub N}. This result differs considerably from the {pi}f{sub 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{sub 1}{sup '}=10(25) s was observed for {sup 69}AsFe{sub -bar} at a temperature of about 20 mK in a magnetic field B=0.1 T.

Authors:
; ; ; ; ; ; ; ;  [1]; ; ; ;  [2]; ;  [3];  [4]
  1. K.U.Leuven, Instituut voor Kern- en Stralingsfysica, Celestijnenlaan 200D, B-3001 Leuven (Belgium)
  2. Nuclear Physics Institute, ASCR, 250 68 Rez (Czech Republic)
  3. Helmholtz-Institut fuer Strahlen- und Kernphysik, Universitaet Bonn, D-53115 Bonn (Germany)
  4. ISOLDE, CERN, CH-1211 Geneva 23 (Switzerland)
Publication Date:
OSTI Identifier:
20771092
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 72; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.72.064316; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ANISOTROPY; APPROXIMATIONS; ARSENIC 69; GROUND STATES; HELIUM 3; HELIUM 4; INTERACTING BOSON MODEL; LANDE FACTOR; MAGNETIC FIELDS; MHZ RANGE; NUCLEAR MAGNETIC MOMENTS; NUCLEAR MAGNETIC RESONANCE; ORIENTED NUCLEI; POLARIZATION; PROTONS; RELAXATION TIME; SPIN-LATTICE RELAXATION

Citation Formats

Golovko, V.V., Kraev, I.S., Phalet, T., Severijns, N., Delaure, B., Beck, M., Kozlov, V.Yu., Lindroth, A., Coeck, S., Zakoucky, D., Venos, D., Srnka, D., Honusek, M., Herzog, P., Tramm, C., and Koester, U. Nuclear magnetic moment of {sup 69}As from on-line {beta}-NMR on oriented nuclei. United States: N. p., 2005. Web. doi:10.1103/PhysRevC.72.064316.
Golovko, V.V., Kraev, I.S., Phalet, T., Severijns, N., Delaure, B., Beck, M., Kozlov, V.Yu., Lindroth, A., Coeck, S., Zakoucky, D., Venos, D., Srnka, D., Honusek, M., Herzog, P., Tramm, C., & Koester, U. Nuclear magnetic moment of {sup 69}As from on-line {beta}-NMR on oriented nuclei. United States. doi:10.1103/PhysRevC.72.064316.
Golovko, V.V., Kraev, I.S., Phalet, T., Severijns, N., Delaure, B., Beck, M., Kozlov, V.Yu., Lindroth, A., Coeck, S., Zakoucky, D., Venos, D., Srnka, D., Honusek, M., Herzog, P., Tramm, C., and Koester, U. Thu . "Nuclear magnetic moment of {sup 69}As from on-line {beta}-NMR on oriented nuclei". United States. doi:10.1103/PhysRevC.72.064316.
@article{osti_20771092,
title = {Nuclear magnetic moment of {sup 69}As from on-line {beta}-NMR on oriented nuclei},
author = {Golovko, V.V. and Kraev, I.S. and Phalet, T. and Severijns, N. and Delaure, B. and Beck, M. and Kozlov, V.Yu. and Lindroth, A. and Coeck, S. and Zakoucky, D. and Venos, D. and Srnka, D. and Honusek, M. and Herzog, P. and Tramm, C. and Koester, U.},
abstractNote = {A precise value for the magnetic moment of the {sup 69}As 5/2{sup -} ground state has been obtained from nuclear magnetic resonance on oriented nuclei (NMR/ON) using the NICOLE {sup 3}He-{sup 4}He dilution refrigerator setup at ISOLDE/CERN. The NMR/ON signal was observed by monitoring the anisotropy of the {sup 69}As {beta} particles. The center frequency {nu}[B{sub ext}=0.0994(10)T]=169.98(9) MHz corresponds to {mu}[{sup 69}As]=+1.6229(16){mu}{sub N}. This result differs considerably from the {pi}f{sub 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{sub 1}{sup '}=10(25) s was observed for {sup 69}AsFe{sub -bar} at a temperature of about 20 mK in a magnetic field B=0.1 T.},
doi = {10.1103/PhysRevC.72.064316},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 72,
place = {United States},
year = {Thu Dec 15 00:00:00 EST 2005},
month = {Thu Dec 15 00:00:00 EST 2005}
}