1. HIGH SPIN ISOBARIC ANALOGUE STATES
- Author
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Tsan Ung Chan, Laboratoire de Physique Subatomique et de Cosmologie (LPSC), and Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Institut Polytechnique de Grenoble - Grenoble Institute of Technology-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Physics ,Nuclear and High Energy Physics ,010308 nuclear & particles physics ,Projectile ,Nuclear Theory ,General Physics and Astronomy ,[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] ,01 natural sciences ,symbols.namesake ,medicine.anatomical_structure ,Pauli exclusion principle ,Pairing ,Isospin ,0103 physical sciences ,medicine ,Coulomb ,symbols ,Isobaric process ,Atomic physics ,Nuclear Experiment ,010306 general physics ,Nucleon ,Nucleus - Abstract
The energy difference between members of the Pairing Triplet could be understood in the framework of charge independence. In the case of two-nucleon analogue stretched states, an estimation more refined than the addition rule is suggested to calculate the energy of pn or 2p states when the energy of 2n states is known. εc, defined as the difference between the residual energies of 2n and 2p states, could be interpreted as the Coulomb interaction between the two protons of the pair. The mean distances between the two nucleons, coupled to their minimum spin value and to their maximum spin value, could then be deduced illustrating the Pauli principle. Mirror members of an isospin triplet have similar lifetime and branching ratios, while the Tz=0 member has quite different properties due to the nonconservation of isospin in electromagnetic interaction. The [Formula: see text] state of the Tz=0 nuclei should decay through M1 transition of about 3 MeV to the [Formula: see text] state, and should have a short lifetime of about 1 fs. Charge independence could be tested by populating high-spin two-nucleon stretched states with 36Ar as the projectile. Proton-rich beam would be of interest to form mirror compound nucleus. Both compound nucleus and mirror compound nucleus would preferentially evaporate protons.
- Published
- 1994