The present status of the field of fluorescence yields, radiationless (Auger and Coster-Kronig) and radiative transition probabilities is summarized. Tables of experimental and theoretical results are included, and tables of "best values" of important quantities are presented.

X-Ray Fluorescence Yields, Auger, and Coster-Kronig Transition Probabilities

This article updates a ten‐year‐old review of this subject [J. Chem. Phys. Ref. Data 4, 539 (1975)]. A survey of the electron affinity determinations for the elements up to Z=85 is presented, and based upon these data, a set of recommended electron affinities is established. Recent calculations of atomic electron affinities and the major semiempirical methods are discussed and compared with experiment. The experimental methods which yield electron binding energy data are described and intercompared. Fine structure splittings of these ions and excited state term energies are given.

Binding energies in atomic negative ions

Since the appearance of the title paper, a number of new developments have occurred which need to be included in that body of material. We present additional remarks and clarifications which supplement and update numerous aspects of the Bethe theory discussed in the earlier paper. We also bring the bibliography up to date. Plasma stopping power, the ${z}^{3}$ effect, and stopping power for particles at extreme relativistic energies are among the new topics included. We make several comments on Fano's earlier review article, Ann. Rev. Nucl. Sci. 13, 1 (1963).

Inelastic Collisions of Fast Charged Particles with Atoms and Molecules-The Bethe Theory Revisited

I. Introduction and Scope 231A. Definitions of Atomic Electron Affinities 233B. Definitions of Molecular Electron Affinities 233II. Experimental Photoelectron Electron Affinities 235A. Historical Background 235B. The Photoeffect 236C. Experimental Methods 237D. Time-of-Flight Negative Ion PhotoelectronSpectroscopy239E. Some Thermochemical Uses of ElectronAffinities241F. Layout of Table 10: ExperimentalPhotoelectron Electron Affinities242III. Theoretical Determination of Electron Affinities 242A. Historical Background 2421. Theoretical Predictions of Atomic ElectronAffinities2422. Theoretical Predictions of MolecularElectron Affinities243B. Present Status of Theoretical Electron AffinityPredictions243C. Basis Sets and Theoretical Electron Affinities 244D. Density Functional Theory (DFT) andElectron Affinities245E. Layout of Tables 8 and 9: Theoretical DFTElectron Affinities247F. Details of Density Functional MethodsEmployed in Tables 8 and 9247IV. Discussion and Observations 248A. Statistical Analysis of DFT Results ThroughComparisons to Experiment and OtherTheoretical Methods248B. Theoretical EAs for Species with UnknownExperimental EAs251C. On the Applicability of DFT to Anions and theFuture of DFT EA Predictions251D. Specific Theoretical Successes 251E. Interesting Problems 2521. C

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Atomic and molecular electron affinities: photoelectron experiments and theoretical computations.

Inelastic collisions of fast charged particles with atoms and molecules the Bethe theory revisited

Recently there has been interest in the development of theoretical methods for incorporating the effects of finite laser bandwidth in the treatment of the ac Stark effect in the two-level atom approximation, and in the extension of this model to approximate descriptions of “weak probe” double resonance experiments [1]. In this paper we briefly describe some experimental observations which have played a role in motivating recent developments in the mathematical framework for treating finite laser bandwidth effects in phase diffusion models [2] and, more recently, in chaotic field models which include the effects of amplitude fluctuations [3].

Laser Bandwidth and Intensity Effects in Multiphoton Ionization of Sodium

Lectures from international authorities on the current status of multiphoton physics which concerns the interaction of intense laser light with matter, involving the absorption and emission of many photons.

Multiphoton processes : proceedings of the 4th International Conference on Multiphoton Processes, JILA, Boulder, Colorado, July 13-17, 1987

The Excitation of the 2P State of Hydrogen by Electrons of Near-Threshold Energy

Resonant Multiphoton Ionization via Rydberg States - Angular Distributions of Photoelectrons

The role played by fluctuations in optical absorption processes is quite varied and interesting because of the extent to which higher order processes are involved and the dependence of different processes on the intensity of the optical field. At very low intensities it may be sufficient to consider only linear absorption: single photon processes at rates so low that state populations are essentially unperturbed. In this case the role of the optical field is completely representable in terms of its power spectrum (the spectral density as a function of frequency). Higher order statistical properties play no role.

Stephen J. Smith

Papers

Laser Bandwidth and Intensity Effects in Multiphoton Ionization of Sodium

Multiphoton processes : proceedings of the 4th International Conference on Multiphoton Processes, JILA, Boulder, Colorado, July 13-17, 1987

The Excitation of the 2P State of Hydrogen by Electrons of Near-Threshold Energy

Resonant Multiphoton Ionization via Rydberg States - Angular Distributions of Photoelectrons

Quantitative Measurement of the Role of Phase Fluctuations in Nonlinear Optical Absorption Processes