Showing papers by "Stephan Fritzsche published in 1998"
TL;DR: In this article, a complete tabulation of all electric-dipole (E1) allowed transitions from levels of the 3s3p{sup 3} and 3s{sup 2}3p3d excited configurations to those of the ground-state configuration, including all weak and intercombination transitions, is provided.
51 citations
TL;DR: In this paper, the authors used the Cowan code with semi-empirically scaled parameters and extensive MCDF computations to find 3s3p4, 3s2¯¯¯¯3�π2¯¯¯¯p2�3¯¯d and 3s 3p33d levels in the P-like ion Cu14+ (spectrum Cu XV), which have never been observed before.
Abstract: Delayed spectra of foil-excited fast Cu ions have been studied to find a number of 3s3p4, 3
s2
3
p2
3
d and 3s3p33d levels in the P-like ion Cu14+ (spectrum Cu XV). Among these are 3
s
3
p3
3
d
6
D levels, which have never been observed before, although they are the lowest excited states that have the same parity as the ground configuration. The investigation combined theory and experiment. The calculations used the Cowan code with semi-empirically scaled parameters and extensive MCDF computations.
10 citations
TL;DR: In this article, third-order many-body perturbation theory calculations of the Lennard-Jones coefficient for the alkali-metal atoms lithium, sodium, potassium, rubidium, cesium, and francium are presented.
Abstract: We present third-order many-body perturbation theory calculations of the Lennard-Jones ${C}_{3}$ coefficient for the alkali-metal atoms lithium, sodium, potassium, rubidium, cesium, and francium. All-order singles-doubles calculations of ${C}_{3}$ are also presented for lithium, sodium, and potassium. For lithium and sodium the present values of ${C}_{3}$ are compared with other theoretical and semiempirical values.
8 citations
01 May 1998
TL;DR: In this paper, third-order many-body perturbation theory calculations of the Lennard-Jones coefficient for the alkali-metal atoms lithium, sodium, potassium, rubidium, cesium, and francium are presented.
Abstract: We present third-order many-body perturbation theory calculations of the Lennard-Jones ${C}_{3}$ coefficient for the alkali-metal atoms lithium, sodium, potassium, rubidium, cesium, and francium. All-order singles-doubles calculations of ${C}_{3}$ are also presented for lithium, sodium, and potassium. For lithium and sodium the present values of ${C}_{3}$ are compared with other theoretical and semiempirical values.
7 citations
TL;DR: In this article, the L 2 3 -MM Auger spectrum of argon is decomposed into satellite spectra by measuring in coincidence the electron energy and the charge of the final ion, and the results of both the electron-electron coincidence experiment are in very good agreement with those of a published step-by-step calculation of the deexcitation cascade in single configuration average approximation.
2 citations
TL;DR: In this paper, the authors discuss the quality of the theoretical calculation of binding energies for atoms and ions which, hopefully, can be tested soon with a new generation of ion traps.
Abstract: We discuss the quality of the theoretical calculation of binding energies for atoms and ions which, hopefully, can be tested soon with a new generation of ion traps.