Conditions for reconstruction from experimental data of the matrix for reactions of tbe alpha + alpha yields BETA + BETA ' type are considered on the basis of general quantum mechanical principles. The reaction matrix M is expanded in a complete set of irreducible tensor operators T/sup JM/(j/sub beta ,/j/sub alpha /), and the number of complex scalar functions which determine it is computed for the case when in variance under space rotations and reflections is taken into account. Time-reversal invariance of the interaction leads to relations between polarization effects in the direct and inverse reactions. The number of experition matrix in the presence of several channels can be general form of the azimuthal dependence of the angular spins) in derived in the appendix. (auth)
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NSA number: NSA-12-015929 OSTI Identifier 4321066 Research organization: and Joint Inst. for Nuclear Research, Moscow. Lab. of Nuclear Problems. Research organization: Joint Inst. for Nuclear Research, Moscow. Lab. of Theoretical Physics.