Trends in autoionization of Rydberg states converging to the 4s threshold in the Kr-Rb{sup +}-Sr{sup 2+} isoelectonic sequence: Theory and experiment

Journal Article · Tue Apr 01 04:00:00 EST 2003 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.67.042707· OSTI ID:20633980

Neogi, A; Kennedy, E T; Mosnier, J -P; Kampen, P van; Costello, J T; O'Sullivan, G; Mansfield, M W.D.; Demekhin, Ph V; Lagutin, B M; Sukhorukov, V L ^[1]

---

1. National Centre for Plasma Science and Technology, School of Physical Sciences, Dublin City University, Glasnevin, Dublin 9 (Ireland)

We have measured the photoabsorption spectra of the Kr-like ions Rb{sup +} and Sr{sup 2+} at photon energies corresponding to the excitation of 4s-np resonances using, the dual laser plasma photoabsorption technique. Dramatic changes in the line profiles, with increasing ionization and also proceeding along the Rydberg series of each ion, are observed and explained by the trends in 4s-transition amplitudes computed within a framework of configuration-interaction Pauli-Fock calculations. Total photoionization cross sections show very good agreement with relative absorption data extracted from the measured spectra.

• OSTI ID: 20633980
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 4 Vol. 67; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ABSORPTION SPECTRA
AUTOIONIZATION
CATIONS
CONFIGURATION INTERACTION
CROSS SECTIONS
EXCITATION
LASER RADIATION
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
PHOTONS
PLASMA
RESONANCE
RUBIDIUM IONS
RYDBERG STATES
STRONTIUM IONS
TRANSITION AMPLITUDES