1. Signature of a two-phonon state through its proton decay pattern
- Author
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M. Lamehi-Rachti, T. Suomijärvi, P. Massolo, Ph. Chomaz, A. Gillibert, A. van der Woude, J.C. Roynette, Didier Beaumel, Y. Blumenfeld, J. A. Scarpaci, I. Lhenry, J.P. Garron, N. Frascaria, N. Alamanos, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
- Subjects
Physics ,Decay scheme ,Proton ,010308 nuclear & particles physics ,Proton decay ,Isoscalar ,Nuclear Theory ,General Physics and Astronomy ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,Inelastic scattering ,01 natural sciences ,24.30.Cz, 25.70.Bc, 25.70.Ef ,Giant resonance ,Excited state ,0103 physical sciences ,Atomic physics ,Nuclear Experiment ,010306 general physics ,Nucleon - Abstract
Inelastic scattering of 50 MeV/nucleon [sup 40]Ca on [sup 40]Ca was measured in coincidence with protons in order to investigate the excitation and decay of highly excited states in [sup 40]Ca. The proton decay pattern corresponding to an excitation region around 34 MeV shows the characteristic behavior expected of the direct decay of a two-phonon state. Thus, by using this novel method, the presence of a double-phonon state built with isoscalar giant resonances in [sup 40]Ca is demonstrated.
- Published
- 1993
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