Emission spectra and atomic structure

- Atomic Spectra Atomic Structure

T HE present edition of this work contains a number of corrections and additions; Birge's new set of fundamental constants has been adopted throughout, and various tables, especially the table of ionization potentials, have been brought up to date. The author is indebted to Professor J. W. Ellis of the University of California at Los Angeles for a list of errors and corrections ; several of the...

Mid-infrared Atomic Fine-structure Emission Line Spectra of Luminous Infrared Galaxies: Spitzer/irs Spectra of the Goals Sample

We present the data and our analysis of mid-infrared atomic fine-structure emission lines detected in Spitzer/IRS high-resolution spectra of 202 local Luminous Infrared Galaxies (LIRGS) observed as part of the Great Observatories All-sky LIRG Survey (GOALS). We readily detect emission lines of [SIV], [NeII], [NeV], [NeIII], [SIII]18.7 μm, [OIV], [FeII], [SIII]33.5μm, and [SiII]. More than 75% o...

Spectra of atomic theories

For a countable structure B, the spectrum is the set of Turing degrees of isomorphic copies of B. For complete elementary first order theory T , the spectrum is the set of Turing degrees of models of T . We answer a question from [1], showing that there is an atomic theory T whose spectrum does not match the spectrum of any structure.

Atomic Emission and Quantum Mechanics

A new method for Eosin preparation and examination of its absorption and emission spectra

Eosin is one of the original dyes of xanthenes derivatives. It is also one of the main derivatives of fluorescein and has brilliant fluorescence. Eosin disodium salt called "Eosin Y" is the most useful form of this compound. In common procedures, eosin is usually obtained by the action of bromine on fluorescein, which has not good yield and purity degree. In this research, it is prepared by the...