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Tidal symmetry in nuclear reactions: application to the scattering of polarised projectiles

J Gomez-Camacho and R C Johnson

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LETTER TO THE EDITOR

The consequences for nucleus-nucleus collisions of the invariance (tidal symmetry) of arbitrary but momentum-independent interactions under rotations about the relative coordinate of the interacting nuclei are examined. In conjunction with an approximate treatment of the centrifugal barrier this symmetry leads to a partial diagonalisation of the coupled-channels description of the scattering of the two nuclei. This approximation is found to give an accurate description of the tensor polarisation observables in a specific heavy-ion elastic scattering case. A consequence of the treatment given here is that the so-called 'shape effect' relations can be satisfied in strong-coupling situations.


PACS

25.70.Bc Elastic and quasielastic scattering

27.80.+w 190(less-than-or-equal-to)A(less-than-or-equal-to)219

21.30.Fe Forces in hadronic systems and effective interactions

24.10.Eq Coupled-channel and distorted-wave models

24.70.+s Polarization phenomena in reactions

21.10.Ky Electromagnetic moments

Subjects

Nuclear physics

Dates

Issue 10 (October 1986)



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