Prospects of ion-mobility measurements in superheavy element research |
| |
Authors: | M Sewtz M Laatiaoui K Schmid D Habs |
| |
Institution: | 1.ARC Seibersdorf research GmbH, Tech Gate Tower, Donau-City-Str. 1,Wien,Austria;2.Technische Universit?t Wien,Wien,Austria;3.Institut für Experimentalphysik, Universit?t Wien,Wien,Austria |
| |
Abstract: | The element specific electron configuration of ions directly reflects the two quantum mechanical observables 〈r2〉 and rmax, which denote the r2 expectation value of the electron density and the principle maximum of the wave function of the outermost electron orbital,
respectively. Thus, the determination of these observables may present a new access to element identification of single superheavy
nuclides. In this paper, we discuss how these observables are related to ionic radii deduced from ion-mobility data using
the most simple hard sphere model and
semi-empirical (n,6,4) model potentials for the interaction of heavy ions with noble gases.
A concept for a high resolution ion-mobility spectrometer is presented. Optimum extraction efficiency of the ions will be
achieved by decoupling the ion motion from the electric field drift by the friction force of the suitably shaped gas flow
at the exit nozzle. |
| |
Keywords: | 27 90 +b Properties of superheavy elements 31 10 +z Theory of electronic structure electronic transitions and chemical binding 51 10 +y Kinetics and transport theory of gases 52 20 Hv Atomic molecular ion and heavy-particle collisions |
本文献已被 SpringerLink 等数据库收录! |
|