Supermultiplet potential model of interaction between the lightest clusters and a unified description of various nuclear reactionsстатья
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Phase shifts delta([f])(L)(E) for the scattering of the lightest clusters A + B have recently been introduced within the supermultiplet potential model considered in this paper. The phases are determined by data from polarization experiments and depend strongly on the signature of the orbital Young tableau [f]. The differential cross sections of spin-isospin flip deuteron scattering into a singlet state are evaluated in terms of these phases. The phase shifts are used for analysis of the large body of data in existence on the reaction d + t --> d(s) + t ((nn)(s) + h) (h = He-3) in the energy range E-lab similar to 20-40 MeV and of the as yet scarce data on the reaction d + d --> d, + d, ((nn), + (pp),). Among other issues, we discuss methods for extracting the contribution of the state t + d, from data on the three-body continuum t + p + n. Ultimately, the experimental data confirm the supermultiplet theory. This theory is based on the observation that there is a large difference between the strengths of the potentials V-L([41]) (R) and V-L([32]) (R), as well as between V-L([4]) (R) and V-L([22]) (R). The same observation can be used in a simple interpretation of data on the photonuclear reactions d + t --> He-5 + gamma, He-4 + gamma --> t +p, and He-4 + gamma --> d + d, and on the charge exchange reaction t + p --> h + n. Lastly, we predict a number of three-cluster near-threshold states, for example, s(3)p(4)[f] = [331](t + t + p), s(3)p(5)[f] = [332](h + t + d), s(4)p(5)[f] = [432](alpha + t + d), etc., that can potentially be observed in various nuclear reactions.