{it K}-Shell Photoionization of Be-like and Li-like Ions of Atomic Nitrogen: Experiment and Theory

Дата и время публикации : 2013-08-30T16:58:36Z

Авторы публикации и институты :
M M Al Shorman
M F Gharaibeh
J M Bizau
D Cubaynes
S Guilbaud
N El Hassan
C Miron
C Nicolas
E Robert
I Sakho
C Blancard
B M McLaughlin

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 22 pages, 5 figures, 3 Tables. J. Phys. B: At. Mol.Opt. Phys. (2013) in press
Первичная категория: physics.atom-ph

Все категории : physics.atom-ph, astro-ph.HE, physics.atm-clus

Краткий обзор статьи: Absolute cross sections for the {it K}-shell photoionization of Be-like and Li-like atomic nitrogen ions were measured by employing the ion-photon merged-beam technique at the SOLEIL synchrotron radiation facility in Saint-Aubin, France. High-resolution spectroscopy at nominal resolutions of 38 meV, 56 meV, 111 meV, 133 meV FWHM for Be-like and 125 meV FWHM for Li-like atomic nitrogen ions was achieved for the photon energies ranging from 410 eV up to 460 eV. The experimental measurements are compared with theoretical estimates from the multi-configuration Dirac-Fock (MCDF), R-matrix and an empirical method. The interplay between experiment and theory enabled the identification and characterisation of the strong 1s $rightarrow$ 2p resonances features observed in the {it K}-shell spectra of each ion and the region around 460 eV for the 1s $rightarrow$ 3p resonance of the N$^{3+}$ ion yielding suitable agreement with experiment.

Category: Physics