WebDec 15, 1994 · Corrected atomic limit in the local-density approximation and the electronic structure of d impurities in Rb I. V. Solovyev, P. H. Dederichs, and V. I. Anisimov Phys. Rev. B 50, 16861 – Published 15 December 1994 WebAnisotropic cluster model electron lifetimes are calculated for impurity scattering in the dilute potassium alloys K(Na) and K(Rb). The system is modelled by a finite cluster in free space. The largest cluster contains 35 scatterers corresponding to 4 BCC shells. An electron described with respect to a host cluster is scattered by an impurity cluster. An impurity …
EHORZ - iopscience.iop.org
WebApr 1, 2000 · From the electric field gradient analysis, one can suggest that the Rb impurity replaces the K site in the mixed crystal. The temperature dependence of the central NMR frequency of ${}^{87}\mathrm{Rb}$ $(I=\frac{3}{2})$ demonstrates the phase transition at 255 K which occurs without a change of the ${\mathrm{Rb}}^{+}$ site symmetry. WebDec 15, 2024 · Experiments on potassium and K-0.077 at.% Rb strained at 60 K indicate the presence of a new temperature-dependent scattering mechanism at T-0.25 K. We ascribe this to inelastic scattering of vibrating dislocations. At the same time the suppression of phonon drag at higher temperatures results in the emergence of the normal electron … shannagh ivory
Ions SpringerLink
WebImpurity Gini Information rescaled Gini Figure 2: Comparison of Gini and Information impurity for two groups. where p iA is the proportion of those in Athat belong to class ifor future samples. Since we would like I(A) =0 when Ais pure, fmust be concave with f(0) = f(1) = 0. Two candidates for f are the information index f(p) = −plog(p) and ... WebJan 1, 2024 · The impurity contents of the typical sample were shown in Table 2, and the purity basically met the standard requirement of 99.5 % (YS/T 789-2012). Compared with … WebJun 10, 2024 · However, when Rb clock runs under atmospheric condition, its long-term stability performance deteriorate seriously. There is a 10 to 100 times deterioration at … polyone ims 3.0