Resonance Transitions in the Spectra of the Ag6+–Ag8+ Ions

Alexander Ryabtsev,Edward Kononov

doi:10.3390/atoms5010011

Abstract

The spectrum of silver, excited in a vacuum spark, was recorded in the region 150–350 Å on a 3-m grazing incidence spectrograph. The resonance 4dk–(4dk−15p + 4dk−14f + 4p54dk+1) was studied in the Ag6+–Ag8+ spectra (Ag VII–Ag IX) with k = 5–3, respectively. Several hundred lines were identified with the aid of the Cowan code and orthogonal operator technique calculations. The energy levels were found and the transition probabilities were calculated.

Highlights

Six- through eight-times ionized silver atoms are the members of the isonuclear sequence of the silver ions with the unfilled 4dk (k = 5–3) ground-state configuration
In this article we report the results of the study of the Ag VII, Ag VIII and Ag IX
It was found by extrapolation to Sn XIII that the identification of this spectrum should be revised

Summary

Introduction

Six- through eight-times ionized silver atoms are the members of the isonuclear sequence of the silver ions with the unfilled 4dk (k = 5–3) ground-state configuration. The spectra of these ions have not been investigated previously. The results for the palladium isonuclear spectra were recently published (see [8] and references therein) Such isoelectronic data are necessary for validation of previously reported analyses of the corresponding tin ion spectra [9,10]. Research on these spectra is of general interest to atomic physics for improving of theoretical methods of calculations of multi-electron heavy atom spectra

Experiment

As in the casecase of silver ionsions in lower stages of ionization

The transitions fromfrom all low

Energy

Section 3.1.

Discussion