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Your search keyword '"Leask, P. J."' showing total 4 results
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4 results on '"Leask, P. J."'

1. alpha-decaying excited states in carbon and boron isotopes

Author

Soić, Neven, Freer, M., Donadille, L., Clarke, N. M., Leask, P. J., Catford, W. N., Jones, K. L., Mahboub, D., Fulton, B. R., Greenhalgh, B. J., and Watson, D. L.

Subjects
nuclear structure, cluster states, 11C, 13C, 14C, 11B, 12B, resonant particle spectroscopy techniques, cluster structure, 11, 13, alpha-decay
Abstract

The experimental studies of the alpha-decaying excited states in 11, 13, 14C and 11, 12B have been performed using resonant particle spectroscopy techniques. Numerous excited states are observed in these nuclei. The results are in agreement with recent predictions of the presence of exotic cluster structures in these nuclei.

Published
2004

2. Cluster structure of 13C probed via the 7Li(9Be,13C*->9Be+alpha) reaction

Author

Soić, Neven, Freer, M., Donadille, L., Clarke, N. M., Leask, P. J., Catford, W. N., Jones, K. L., Mahboub, D., Fulton, B. R., Greenhalgh, B. J., Watson, D. L., and Weisser, D. C.

Subjects
Nuclear reactions, 7Li+9Be, 13C levels deduced, 4He+9Be decay, angular distributions, molecular structure, Nuclear Experiment
Abstract

A study of the 7Li(9Be,4He9Be)3H reaction at E{beam}=70 MeV has been performed using resonant particle spectroscopy techniques and provides a measurement of alpha-decaying states in 13C. Excited states are observed at 12.0, 13.4, 14.1, 14.6, 15.2, 16.8, 17.9, 18.7, 21.3 and 23.9 MeV. This study provides the first measurement of the three highest energy states. Angular distribution measurements have been performed and have been employed to indicate the transferred angular momentum for the populated states. These data are compared with recent speculations of the presence of chain-like structures in 13C., Comment: accepted for publication in Nuclear Physics A

Published
2003

3. Cluster structure of 13C probed via the 7Li(9Be,13C*->9Be+alpha) reaction

Author

Soic, N., Freer, M., Donadille, L., Clarke, N. M., Leask, P. J., Catford, W. N., Jones, K. L., Mahboub, D., Fulton, B. R., Greenhalgh, B. J., Watson, D. L., and Weisser, D. C.

Subjects
FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract

A study of the 7Li(9Be,4He9Be)3H reaction at E{beam}=70 MeV has been performed using resonant particle spectroscopy techniques and provides a measurement of alpha-decaying states in 13C. Excited states are observed at 12.0, 13.4, 14.1, 14.6, 15.2, 16.8, 17.9, 18.7, 21.3 and 23.9 MeV. This study provides the first measurement of the three highest energy states. Angular distribution measurements have been performed and have been employed to indicate the transferred angular momentum for the populated states. These data are compared with recent speculations of the presence of chain-like structures in 13C., accepted for publication in Nuclear Physics A

Published
2003
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4. 4He decay of excited states in 14C

Author

Soic, N., Freer, M., Donadille, L., Clarke, N. M., Leask, P. J., Catford, W. N., Jones, K. L., Mahboub, D., Fulton, B. R., Greenhalgh, B. J., Watson, D. L., and Weisser, D. C.

Subjects
Nuclear Theory (nucl-th), Nuclear Theory, Nuclear reaction, 7Li(9Be, 4He10Be)2H, 4He+10Be decay, cluster structure, FOS: Physical sciences, Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

A study of the 7Li(9Be,4He 10Be)2H reaction at E{beam}=70 MeV has been performed using resonant particle spectroscopy techniques and provides the first measurements of alpha-decaying states in 14C. Excited states are observed at 14.7, 15.5, 16.4, 18.5, 19.8, 20.6, 21.4, 22.4 and 24.0 MeV. The experimental technique was able to resolve decays to the various particle bound states in 10Be, and provides evidence for the preferential decay of the high energy excited states into states in 10Be at ~6 MeV. The decay processes are used to indicate the possible cluster structure of the 14C excited states., accepted for publication in PRC

Published
2003

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