closed shell

closed shell

[¦klōzd ′shel]
(physics)
An atomic or nuclear shell containing the maximum number of electrons or nucleons allowed by the Pauli exclusion principle.
References in periodicals archive ?
The study of shell structure and relevant properties, for example, single-particle energies (SPEs), of closed shell nuclei plays a crucial role in the description of various astrophysical scenarios.
It stands for the notion that for the 555777 structures the ground states are more preferably triplet, while the 585 structures are preferred to be closed shell singlet within the zigzag HGFs.
A thin, homogeneous, isotropic, and circumferentially closed shell of revolution is considered in this paper.
Would we wish we never left the safety of the closed shell or would expert guides lead us along a river of beauty and excitement?
The initial configuration relies on a closed shell and results in max vertical displacement of 2043 [micro]m.
Shell length (SL, mm, maximum distance of the anterior-posterior axis of the shell), shell height (SH, mm, distance of the dorsalventral axis) shell width (SW, mm, maximum distance between the closed shell valves), foot length (FL, mm, distance between the shell margin and the base of the muscul-pedal region of the foot), and total (TW, g), shell (SWt, g), tissue wet (WF1Wt, g), and dry weights (DF1Wt, g) were measured.
And, to be able to whip around a closed shell and pry into a molluscs hinge, twist the top shell free, detach and scoop, one really needs an oyster knife with its thick blade and hand guard.
Application of the obtained formula to line broadening phenomena in [I.sup.b] absorption spectra.--[I.sup.b] spectra, obtained by excitation of an electron belonging to the outermost closed shell, have been studied by BEUTLER in a series of important works ([2]).
For [Ti.sub.2][H.sub.4], a doubly hydrogen bridged ground state closed shell singlet structure with [D.sub.2h] symmetry was found at the MCSCF level.
There has been considerable recent experimental interest in van der Waals complexes formed between open and closed shell diatoms.
Made up of protein building blocks, this tightly closed shell usually has a geometric structure.