The congruence energy: a contribution to nuclear masses, deformation energies and fission barriers

Autor:	W.J. Swiatecki, W.D. Myers
Rok vydání:	1997
Předmět:	Physics Nuclear and High Energy Physics Proton Fission Nuclear Theory Binding energy Shell (structure) Nuclear physics Congruence (geometry) Neutron Granularity Atomic physics Nuclear Experiment Wave function
Zdroj:	Nuclear Physics A. 612:249-261
ISSN:	0375-9474
DOI:	10.1016/s0375-9474(97)80014-0
Popis:	The difference between measured binding energies and those calculated using a shell- and pairing-corrected Thomas-Fermi model can be described approximately by C ( I ) = −10 exp(−4.2{ I }) MeV, where I = ( N - Z )/ A . Our interpretation of this extra binding is in terms of the granularity of quantal nucleonic density distributions, which leads to a stronger interaction for a neutron and proton with congruent nodal structures of their wave functions. The predicted doubling of this congruence energy in fission is supported by an analysis of measured fission barriers and by a study of wave functions in a dividing Hill-Wheeler box potential. A semi-empirical formula for the shape-dependent congruence energy is described.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7b51b534927e249b9a9d5f9e92cb711c https://doi.org/10.1016/s0375-9474(97)80014-0 Zobrazit plný text záznamu Full Text from ScienceDirect