R. Novick

Bio: R. Novick is an academic researcher. The author has contributed to research in topics: Ionization energy & Autoionization. The author has an hindex of 1, co-authored 1 publications receiving 114 citations.

Auto-ionizing States in the Alkali Atoms with Microsecond Lifetimes

Abstract: Energy level behavior of metastable alkali atoms against autoionization and radiative decay

Spectral Distribution of Atomic Oscillator Strengths

Abstract: Information on the spectrum of oscillator strength for neutral atoms in their ground states is surveyed with particular regard to recent progress in the far uv-soft x-ray range and to the theoretical interpretation of data from experiments and from numerical calculations. The analysis brings out numerous aspects of atomic mechanics and problems that remain unsolved. An effort is made to interconnect different theoretical approaches within the framework of the theory of atomic spectra.

Experimental determinations of the hyperfine structure in the alkali atoms

Abstract: The measurements of the hyperfine structure of free, naturally occurring, alkali atoms are reviewed. The experimental methods are discussed, as are the relationships between hyperfine structure data and other atomic constants.

Dissociative Excitation of Some Oxygen-Containing Molecules: Lifetimes and Electron-Impact Cross Sections

Abstract: Decay lifetimes of seven vacuum-ultraviolet O I and O II emission multiplets have been measured using a pulsed electron beam in low-pressure samples of ${\mathrm{O}}_{2}$, CO, NO, and ${\mathrm{H}}_{2}$O. The lifetimes and cascade patterns of the lines are consistent with known autoionization processes. In two cases, spin-orbit-induced autoionization rates are determined. Absolute electron excitation functions for 8447---\AA{} O I have been measured in the above gases. Relative excitation functions for 1304-\AA{} O I are normalized to the 8447-\AA{} absolute cross section by means of a time-domain cascade analysis. A method for computing relative cross sections from $N$-exponential decays is outlined.

Dissociation by Electron Impact of Oxygen into Metastable Quintet and Long‐Lived High‐Rydberg Atoms

Abstract: Excitation of O2 by low energy electrons leads to its dissociation with the formation of metastable oxygen atoms. The metastable atoms which have been detected are in the 3s5S0 state at 9.14 eV and in long‐lived high‐Rydberg states. A molecular beam time‐of‐flight method is used to measure their translational energy. Electron impact excitation functions are given for the formation of metastable atoms. High‐Rydberg atoms result from dissociation of initially formed high‐Rydberg molecules. Because a high‐Rydberg molecular orbital is nonbonding, dissociation is determined by states of the core O2+ ion. This mechanism is supported by general agreement between the observed kinetic energy distribution of high‐Rydberg atoms and the kinetic energy distribution of O+ from dissociative ionization of O2. The fragment kinetic energy distributions are discussed in terms of known and predicted states of O2 and O2+.