Toward high-precision values of the self energy of non-S states in hydrogen and hydrogen-like ions
نویسندگان
چکیده
The method and status of a study to provide numerical, high-precision values of the self-energy level shift in hydrogen and hydrogen-like ions is described. Graphs of the self energy in hydrogen-like ions with nuclear charge number between 20 and 110 are given for a large number of states. The self-energy is the largest contribution of Quantum Electrodynamics (QED) to the energy levels of these atomic systems. These results greatly expand the number of levels for which the self energy is known with a controlled and high precision. Applications include the adjustment of the Rydberg constant and atomic calculations that take into account QED effects. PACS Nos.: 12.20.Ds, 31.30.Jv, 06.20.Jr, 31.15.-p Résumé : Nous rapportons les derniers développements d’une étude destinée à fournir des valeurs numériques de grande précision du déplacement de self-énergie dans l’hydrogène et les ions hydrogénoı̈des. Nous présentons des graphes de la self-énergie dans les ions hydrogénoı̈des de nombre de charge compris entre 20 et 110, pour de nombreux niveaux. La self-énergie est la contribution la plus importante de l’électrodynamique quantique aux niveaux d’énergie de ces systèmes atomiques. Les résultats présentés étendent largement l’ensemble des niveaux atomiques dont on connaı̂t le déplacement de self-énergie avec une précision importante et contrôlée. Les applications de ce travail incluent l’ajustement de la constante de Rydberg et les calculs atomiques qui prennent en compte les effets de l’électrodynamique quantique.
منابع مشابه
The Energy and Exergy Analysis of Integrated Hydrogen Production System Using High Temperature Steam Electrolysis with Optimized Water Path (RESEARCH NOTE)
In this research, solar-drived integrated Hydrogen production (HP) using high-temperature steam electrolysis (HTSE) is thermodynamically evaluated. This system includes an organic Rankine cycle (ORC), Rankine cycle, Brayton cycle, solar tower, and High Temperature Steam Electrolysis (HTSE). Solar energy supplies thermal energy. This heat source is applied for generating power. This energy is us...
متن کاملIn situ activation of a Ni catalyst with Mo ion for hydrogen evolution reaction in alkaline solution
In this study Ni catalyst have been activated during hydrogen evolution reaction (HER) by adding Mo ions into the alkaline electrolyte. After dissolving different amounts of ammonium molybdate in the 1M NaOH as electrolyte, Ni catalyst was used as cathode for HER. Afterwards a comparison between hydrogen overpotential measured in Ni catalyst with and without in situ activation has been made; th...
متن کاملClean Hydrogen Energy and Electric Power Production with CO2 Capturing by Using Coal Gasification
Clean hydrogen is the major energy carrier for power production. The conversion of CO to CO2 and zero emission during hydrogen energy production causes high capital cost. It is a matter of prestige to optimize the process in order to make zero emission and cost effective production of clean hydrogen energy and electric power. In this era, coal gasification is th...
متن کاملاثر قدرت دوپارش و انرژی پرش پیوندهای شانهای بر رسانش و چگالی حالتهای الکترونی بسپارهای پلیاستیلن-مانند
In this paper, we study the electronic conductance and density of states for a comb-like polymer with periodic hopping energies in the tight-binding approach. Electron transmission coefficient and density of states are analytically calculated by using Green’s function of the system. The results show that the electronic conductance spectrum has one energy gap in the absence of carbon-hydrogen b...
متن کاملLamb shift of 3 P and 4 P states and the determination of α
The fine structure interval of P states in hydrogenlike systems can be determined theoretically with high precision, because the energy levels of P states are only slightly influenced by the structure of the nucleus. Therefore a measurement of the fine structure may serve as an excellent test of QED in bound systems or alternatively as a means of determining the fine structure constant α with v...
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 2004