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NaK photoabsorption and resonant KLL Auger spectra in naf and NaCl

Kikas, A; Nommiste, E; Ruus, R; Saar, A and Martinson, Indrek LU (2002) In Surface Review and Letters 9(2). p.1303-1308
Abstract
The nature of Na Is photoabsorption in NaF and NaCl is investigated using the resonant Auger decay of Na Is core excitations. The appearance of new peaks in Auger spectra, when the energy of excitation coincides with the photoabsorption thresholds, shows that the core excitons are created in the threshold region of the Na 1s photoabsorption spectrum. The core excitons around 1074.2 eV originate from the dipole-forbidden 1s(-1)3s final state, the population of which is made possible by the symmetry disruption at the photoabsorption site. Another core exciton, excited at photon energies of 1076.8 eV in NaF and 1076.3 eV in NaCl, originates from 1s(-1)3p states similar to atoms of Ne and Na. Resonant Auger spectra show also that in NaCl the... (More)
The nature of Na Is photoabsorption in NaF and NaCl is investigated using the resonant Auger decay of Na Is core excitations. The appearance of new peaks in Auger spectra, when the energy of excitation coincides with the photoabsorption thresholds, shows that the core excitons are created in the threshold region of the Na 1s photoabsorption spectrum. The core excitons around 1074.2 eV originate from the dipole-forbidden 1s(-1)3s final state, the population of which is made possible by the symmetry disruption at the photoabsorption site. Another core exciton, excited at photon energies of 1076.8 eV in NaF and 1076.3 eV in NaCl, originates from 1s(-1)3p states similar to atoms of Ne and Na. Resonant Auger spectra show also that in NaCl the first sharp photoabsorption maximum at 1076.6 eV has only partially excitonic character. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Surface Review and Letters
volume
9
issue
2
pages
1303 - 1308
publisher
World Scientific
external identifiers
  • wos:000178109900102
  • scopus:0036553612
ISSN
0218-625X
DOI
10.1142/S0218625X02003718
language
English
LU publication?
yes
id
77e3e2c7-d872-4923-8c51-54f2e0d0505b (old id 327818)
date added to LUP
2007-10-31 09:05:59
date last changed
2017-01-01 07:16:51
@article{77e3e2c7-d872-4923-8c51-54f2e0d0505b,
  abstract     = {The nature of Na Is photoabsorption in NaF and NaCl is investigated using the resonant Auger decay of Na Is core excitations. The appearance of new peaks in Auger spectra, when the energy of excitation coincides with the photoabsorption thresholds, shows that the core excitons are created in the threshold region of the Na 1s photoabsorption spectrum. The core excitons around 1074.2 eV originate from the dipole-forbidden 1s(-1)3s final state, the population of which is made possible by the symmetry disruption at the photoabsorption site. Another core exciton, excited at photon energies of 1076.8 eV in NaF and 1076.3 eV in NaCl, originates from 1s(-1)3p states similar to atoms of Ne and Na. Resonant Auger spectra show also that in NaCl the first sharp photoabsorption maximum at 1076.6 eV has only partially excitonic character.},
  author       = {Kikas, A and Nommiste, E and Ruus, R and Saar, A and Martinson, Indrek},
  issn         = {0218-625X},
  language     = {eng},
  number       = {2},
  pages        = {1303--1308},
  publisher    = {World Scientific},
  series       = {Surface Review and Letters},
  title        = {NaK photoabsorption and resonant KLL Auger spectra in naf and NaCl},
  url          = {http://dx.doi.org/10.1142/S0218625X02003718},
  volume       = {9},
  year         = {2002},
}