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Nuclear Radiation Detected Optical Pumping of neutron-deficient Hg isotopes

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

The extension of the Nuclear Radiation Detected Optical Pumping method to mass-separated samples of isotopes far off stability is presented for a series of light Hg isotopes produced at the ISOLDE facility at CERN. The isotope under investigation is transferred by an automatic transfer system into the optical pumping apparatus. Zeeman scanning of an isotopically pure Hg spectral lamp is used to reach energetic coincidence with the hyperfine structure components of the 6s 2 1 S 06s6p 3P1,λ=2,537 Å resonance line of the investigated isotope and the Hg lamp. The orientation built up by optical pumping is monitored via the asymmetry or anisotropy of the nuclear radiation. Nuclear spins, magnetic moments, electric quadrupole moments and the isotope shifts are obtained for181Hg-191Hg using theβ asymmetry as detector. The extension of the method using theγ anisotropy is discussed and test measurements on193Hg are presented. This paper describes the experimental procedure, results, and discussion are given in a following publication.

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Authors and Affiliations

  1. I. Physikalisches Institut der Universität Heidelberg, Deutschland

    G. Huber, J. Bonn, H. -J. Kluge & E. -W. Otten

  2. Institut für Physik der Universität Mainz, Federal Republic of Germany

    G. Huber, J. Bonn, H. -J. Kluge & E. -W. Otten

  3. The ISOLDE collaboration CERN, Geneva, Switzerland

    G. Huber, J. Bonn, H. -J. Kluge & E. -W. Otten

  4. Laboratoire R. Bernas, F-91406, Orsay, France

    G. Huber

Authors
  1. G. Huber
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  2. J. Bonn
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  3. H. -J. Kluge
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  4. E. -W. Otten
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Additional information

This publication comprises part of the dissertations of J. Bonn and G. Huber.

In the course of the experiments the team changed its home university from Heidelberg to Mainz.

The authors like to thank Prof. B. Povh for guiding their attention to the ISOLDE facility. We acknowledge the support given to us by CERN, in particular by the Nuclear Chemistry group whose hospitality we enjoyed in the course of the experiment. The project grately benifited from the support and the interest of the late Prof. P. Preiswerk. We like to thank Dr. A. Kjelberg, and Prof. P.G. Hansen and the colleagues in the ISOLDE collaboration for their support and permanent interest in this experiment and for fruitful discussions. The group was temporally joined by Dr. U. Köpf, L. Kugler, Dr. J.M. Rodriguez, and Dr. S. Ullrich. We appreciate their contribution to the success of the experiment. We like to thank the technical staff of Heidelberg University and of CERN for their excellent work, in particular the group leaders Mr. Ehrbar, Dr. Farr and Mr. Witzmann from Heidelberg and Mr. Albrecht, Mr. Nichols and Mr. Pozzo from CERN. We furthermore like to thank Mr. Hennenberger for his help to get the set up working for each run. This work was sponsored by the Bundesministerium für Forschung und Technologie.

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Huber, G., Bonn, J., Kluge, H.J. et al. Nuclear Radiation Detected Optical Pumping of neutron-deficient Hg isotopes. Z Physik A 276, 187–202 (1976). https://doi.org/10.1007/BF01412097

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