By Professor G. S. Anagnostatos, Professor Dr. W. von Oertzen (eds.)
The topic of clusters - small aggregates of debris - is a subject of basic curiosity in either atomic and nuclear physics, and in addition in different fields equivalent to the quark-structures of baryons and cosmology. The interaction among atomic and nuclear physics is a very interesting one simply because many suggestions are universal to either fields (quantal results, shells, geometric buildings, collective modes, fission, etc.). those complaints include a wealth of papers illustrating the interdisciplinary function of cluster physics. a few of them are reprinted from Zeitschrift für Physik A and D.
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Additional info for Atomic and Nuclear Clusters: Proceedings of the Second International Conference at Santorini, Greece, June 28 – July 2, 1993
A particularly remarkable phenomenon is the formation of alpha-chain states in light nuclei, and these are described in Sect. 6. Over the years there have been many theoretical and experimental studies of alpha-clustering in nuclei, and several reviews have been published (Wildermuth and Tang ; Hodgson , ). In addition, there is a series of international conferences on clustering aspects in nuclear and 6 subnuclear systems, and the proceedings of these conferences contain much information on alpha-clustering.
Calculations of alpha-chain states in 12C and 16 0 have been made by Zamick and Zheng . In 1986, Marsh and Rae  made calculations of the states of 24Mg using a cranked version of the Bloch-Brink cluster model and predicted a band of states around 45 MeV corresponding to a linear chain of six alpha-particles. Experimental evidence for this band has been found' by Wuosmaa et al.  at 48 MeV, approximately the energy predicted by Marsh and Rae. This state breaks up into two 12C alpha-chain states.
In atomic physics, the following approximation was introduced by Slater: -s d 3 r' e2 f'" cf> J(r')cf>;(r')cf> Ir-r'l ~c (r)cf> i(r) j (r) (5) , where the coefficient c (r) is calculated assuming the occupied wavefunction can be represented by an infinite Fermi gas in the vicinity of the point r. 984e 2 [n(r)p/3. (6) Once the Slater approximation is made to simplify the Hartree-Fock equation, it is tempting to make further changes in the interaction in order that the final energies converge better to the actual solution of the many-particle Schrodinger equation.
Atomic and Nuclear Clusters: Proceedings of the Second International Conference at Santorini, Greece, June 28 – July 2, 1993 by Professor G. S. Anagnostatos, Professor Dr. W. von Oertzen (eds.)