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Your search keyword '"Døssing, T."' showing total 4 results
Start Over Author "Døssing, T." Topic gamma rays
4 results on '"Døssing, T."'

1. Order to Chaos Properties of the Decay-out Gamma Rays from Superdeformed Bands.

Author

Døssing, T., Lopez-Martens, A. P., Khoo, T. L., Lauritsen, T., and Åberg, S.

Subjects
*MATRICES (Mathematics), *GAMMA rays, *PROJECTILES, *NUCLEAR fragmentation
Abstract

Based on GOE sparse matrices, a model for decay-out of superdeformed bands is formulated, with focus on the degree of chaoticity of the spectrum of normally deformed states, to which the superdeformed band couples at decay-out. By means of the effective dimensionality parameter, the spectrum may be varied between the two limiting situations of complete order and complete chaos. The model is applied to the measured distribution of transition strength of decay-out γ-ray lines in 194Hg, and it is found that the normally deformed states should be closer to the chaotic than the ordered situation, with GOE-type spectral correlations extending over at least 10 levels. © 2004 American Institute of Physics [ABSTRACT FROM AUTHOR]

Published
2004
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3. Gamma-ray feeding and decay of superdeformed states.

Author

Lopez-Martens, A., Døssing, T., Khoo, T. L., Herskind, B., Lauristen, T., Matsuo, M., Yoshida, K., Korichi, A., Hannachi, F., Ahmad, I., Amro, H., de Angelis, G., Bazzacco, D., Beausang, C., Bouchez, E., Bringel, P., Calderin, I. J., Carpenter, M. P., Fischer, S. M., and Hackman, G.

Subjects
*GAMMA rays, *ELECTROMAGNETIC waves, *RADIATION, *NUCLEAR physics, *RADIOACTIVE decay, *NUCLEAR reactions
Abstract

We report on four recent results concerning the population and the decay of superdeformed states, namely the structure of excited superdeformed states in 194Hg, the search for fine structure of the last superdeformed transitions in 194Pb, the primary decay-out strength analysis in 194Hg and, as a consequence of this, the possibility of using the decay-out as a tool to study order-to-chaos properties of normally deformed states. [ABSTRACT FROM AUTHOR]

Published
2004
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4. Population and decay of superdeformed nuclei probed by discrete and quasi-continuum [formula omitted]-ray spectroscopy.

Author

Lopez-Martens, A., Lauritsen, T., Leoni, S., Døssing, T., Khoo, T.L., and Siem, S.

Subjects
*NUCLEAR physics, *DISCRETE systems, *FIELD theory (Physics), *DEFORMATIONS (Mechanics), *SPIN-spin interactions, *GAMMA rays, *SPECTRUM analysis
Abstract

Nuclear superdeformation at high spin was discovered a little over 30 years ago. Since then, a large body of data has been collected on the subject and many new and interesting phenomena have been discovered. In particular, the way superdeformed states are populated and depopulated offers a unique laboratory to study rotational motion as a function of excitation energy and the evolution of nuclear structure over a large interval in energy and spin. This article focuses on the experimental techniques and methods developed to study the quasicontinuous spectra of gamma rays emitted by rapidly rotating superdeformed nuclei and presents the results regarding rotational damping, the transition from ordered to chaotic motion and quantum tunnelling in a complex environment. [ABSTRACT FROM AUTHOR]

Published
2016
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