Physics
Scientific paper
Jan 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992phrvl..68...21e&link_type=abstract
Physical Review Letters, Volume 68, Issue 1, January 6, 1992, pp.21-24
Physics
52
Visible And Ultraviolet Spectra, Multiphoton Ionization And Excitation To Highly Excited States
Scientific paper
Using resonant multiphoton laser excitation in combination with temporarily applied electric fields we have excited high-lying planetary states in strontium. Thereby, the angular momenta were high enough to prevent penetration of the Sr++ core, as well as the mutual penetration of the two excited wave functions. Analysis of the spectra (quantum defects and oscillator strength modulations) clearly revealed the dipole structure of such a ``planetary atom,'' where the outer electron is bound to either a permanent or an induced dipole formed by the inner electron and the ionic core.
Eichmann Ulrich
Lange V.
Sandner Werner
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