Asymptotically exact expression for the energies of the S Rydberg series in a two-electron system
نویسندگان
چکیده
The 1sns S Rydberg series in a two-electron system with the charge of the nucleus, Z'1, is treated by means of the quantum-defect theory. Comparison with configuration interaction calculations suggests that the quantum-defect expression for the energy levels becomes asymptotically exact as Z→1. This provides an analytic description of the disappearance of the 1sns S bound states when Z approaches the critical value of 1.
منابع مشابه
ادغام الگوی شبکه‌ای هولشتاین - کاندو برای توصیف نظریه ابررساناهای دمای بالا
It is a common knowledge that the formation of electron pairs is a necessary ingredient of any theoretical work describing superconductivity. Thus, finding the mechanism of the formation of the electron pairs is of utmost importance. There are some experiments on high transition temperature superconductors which support the electron-phonon (e-ph) interactions as the pairing mechanism (ARPES),...
متن کاملA Diffusion Model for Classical Chaotic Compound Scattering
We consider the classical map proposed previously to be the exact classical analogue of Rydberg Molecules calculated with the approximations relevant to the multichannel quantum defect theory. The resulting classical map is analyzed at energies above the threshold for the Rydberg electron. At energies very near to this threshold we find the possibility of bounded motion for positive energy due ...
متن کاملTwo-stage Procedure in P-Order Autoregressive Process
In this paper, the two-stage procedure is considered for autoregressive parameters estimation in the p-order autoregressive model ( AR(p)). The point estimation and fixed-size confidence ellipsoids construction are investigated which are based on least-squares estimators. Performance criteria are shown including asymptotically risk efficient, asymptotically efficient, and asymptotically consist...
متن کاملSystem-dependent exchange-correlation functional with exact asymptotic potential and εHOMO ≈ - I.
Density scaling considerations are used to derive an exchange-correlation explicit density functional that is appropriate for the electron deficient side of the integer and which recovers the exact r → ∞ asymptotic behaviour of the exchange-correlation potential. The functional has an unconventional mathematical form with parameters that are system-dependent; the parameters for an N-electron sy...
متن کاملP-64: Innate Immune System Importance in Ectopic Pregnancy with Emphasis on TLR4 Gene
Background: In an ectopic pregnancy (EP) the egg does not reach to the uterus, but instead implants somewhere outside it, usually in fallopian tube. In most cases the exact cause of an ectopic pregnancy is unknown but it is often a result of some sort of damage to the fallopian tube. The tube may have become blocked or narrowed by previous surgery or infection. An active immune system need to r...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2002