Previous Article in Journal / Special Issue
Regularities and Systematic Trends on Zr IV Stark Widths
Article Menu

Export Article

Open AccessFeature PaperArticle
Atoms 2017, 5(4), 50; doi:10.3390/atoms5040050

Nonlinear Spectroscopy of Alkali Atoms in Cold Medium of Astrophysical Relevance

1
Saint Petersburg State University, St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
2
Instytut Fizyki im. Mariana Smoluchowskiego, Uniwersytet Jagielloński, 30-348 Kraków, Poland
3
Laser Centre, University of Latvia, LV-1002 Riga, Latvia
4
Astronomical Observatory, Volgina 7, 11060 Belgrad, Serbia
5
IHIS-Technoexperts, Bezanijska 23, 11080 Zemun, Serbia
6
Observatoire de Paris, 92195 Meudon CEDEX, France
7
Institute of Physics, University of Belgrad, P.O. Box 57, 11001 Belgrad, Serbia
8
Pulkovo Observatory, Russian Academy of Sciences, St. Petersburg 196140, Russia
9
Dipartimento di Fisica Enrico Fermi and CNISM, Università di Pisa, I-56127 Pisa, Italy
*
Author to whom correspondence should be addressed.
Received: 31 August 2017 / Revised: 21 November 2017 / Accepted: 2 December 2017 / Published: 6 December 2017
(This article belongs to the Special Issue Spectral Line Shapes in Astrophysics and Related Topics)
View Full-Text   |   Download PDF [877 KB, uploaded 6 December 2017]   |  

Abstract

The time-dependent population dynamics of hyperfine (HF) sublevels of n 2 p 3 / 2 atomic states upon laser excitation in a cold medium of alkali atoms is examined. We demonstrate some peculiarities of the absorption HF multiplet formation in D2-line resulting from a long interaction time (∼200 μ s) interaction between light and Na ( n = 3 ) and Cs ( n = 6 ) atoms in a cold and slow sub-thermal ( T 1 K) beam. We analytically describe a number of D2-line-shape effects that are of interest in spectroscopic studies of cold dusty white dwarfs: broadening by optical pumping, intensity redistribution within components of D2-line HF multiplet for partially closed transitions and asymmetry of absorption lines induced by AC Stark shifts for cyclic transitions. View Full-Text
Keywords: spectroscopy; alkali atoms; astrophysics spectroscopy; alkali atoms; astrophysics
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Efimov, D.K.; Bruvelis, M.; Bezuglov, N.N.; Dimitrijević, M.S.; Klyucharev, A.N.; Srećković, V.A.; Gnedin, Y.N.; Fuso, F. Nonlinear Spectroscopy of Alkali Atoms in Cold Medium of Astrophysical Relevance. Atoms 2017, 5, 50.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Atoms EISSN 2218-2004 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top