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Damping of giant resonances in asymmetric nuclear matter

K. Morawetz·U. Fuhrmann·R. Walke
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Abstract

The giant collective modes in asymmetric nuclear matter are investigated within a dynamic relaxation time approximation. We derive a coupled dispersion relation and show that two sources of coupling appear: (i) a coupling of isoscalar and isovector modes due to different mean-fields acting and (ii) an explicit new coupling in asymmetric matter due to collisional interaction. We show that the latter one is responsible for a new mode arising besides isovector and isoscalar modes.

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K. Morawetz, U. Fuhrmann, R. Walke. 1998-09-11. Damping of giant resonances in asymmetric nuclear matter. https://doi.org/10.1016/s0375-9474(99)00083-4

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