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Author Fröman, Nanny.

Title Stark effect in a hydrogenic atom or ion [electronic resource] : treated by the phase-integral method / Nanny Fröman, Per Olof Fröman ; with adjoined papers by A. Hökback and P.O. Fröman.

Imprint London, UK : Imperial College Press, ©2008.

Item Status

Description 1 online resource (viii, 153 pages) : illustrations
Bibliography Includes bibliographical references and indexes.
Contents 1. Introduction -- 2. Schrödinger equation, its seperation and its exact eigenfunctions. 2.1. Separation of the time-independent Schrd̈inger equation for the internal motion. 2.2. Properties of the eigenfunctions of the time-independent Schrödinger equation for the internal motion -- 3. Development in time of the probability amplitude for a decaying state -- 4. Phase-integral method. 4.1. Phase-integral approximation generated from an unspecified base function. 4.2. Connection formulas associated with a single transition point -- 5. Derivation of phase-integral formulas for profiles, energies and half-widths of Stark levels. 5.1. Positions of the Stark levels. 5.2. Formulas for the calculation of dL/dE, dK[symbol]/dE and dK/dE. 5.3. Half-widths of the Stark intervals -- 6. Procedure for transformation of the phase-integral formulas into formulas involving complete elliptic integrals -- Adjoined papers by Anders Hökback and Per Olof Fröman -- 7. Phase-inegral quantities and their partial derivatives with respect to [symbol] and [symbol] expressed in terms of complete elliptic integrals. 7.1. The [symbol]-equation. 7.2. The [symbol]-equation in the sub-barrier case. 7.3. The [symbol]-equation in the super-barrier case -- 8. Numerical results.
Summary This book treats the Stark effect of a hydrogenic atom or ion in a homogeneous electric field. It begins with a thorough review of previous work in this field since 1926. After the Schrödinger equation has been separated with respect to time dependence, centre of mass motion and internal motion, followed by a discussion of its eigenfunctions, the exact development in time of the probability amplitude for a decaying state is obtained by means of a formula analogous to the Fock-Krylov theorem. From this formula one obtains by means of the phase-integral approximation generated from a particular base function non-relativistic formulas for profiles, energies and half-widths of the Stark levels. These formulas are then transformed into formulas expressed in terms of complete elliptic integrals. The formulas thus obtained are used for the calculation of energies and half-widths of 198 different Stark states, which are compared with the corresponding results obtained by other authors with the use of other methods. An analysis of this material indicates that the energy values obtained by the phase-integral method are at least as accurate as those obtained by other methods in more than half of the 198 cases. The book presents one of the most comprehensive asymptotic treatments of the Stark effect in atomic hydrogen that have been published.
Local Note eBooks on EBSCOhost EBSCO eBook Subscription Academic Collection - North America
Subject Stark effect.
Optical spectroscopy.
Quantum theory.
Schrödinger equation.
Genre/Form Electronic books.
Added Author Fröman, Per Olof.
Hökback, A.
Other Form: Print version: Fröman, Nanny. Stark effect in a hydrogenic atom or ion. London, UK : Imperial College Press, ©2008 (DLC) 2008299745
ISBN 1860949258 (electronic bk.)
9781860949258 (electronic bk.)
186094924X (Cloth)