INVESTIGADORES
MITNIK Dario Marcelo
artículos
Título:
Measurement of the field-induced dielectronic-recombination-rate enhancement of O5+ ions differential in the Rydberg quantum number n
Autor/es:
BOHM, S.; SCHIPPERS, S.; SHI, W.; MULLER, A.; EKLOW, N.;SCHUCH, R.; DANARED, H.; BADNELL, N. R.; MITNIK, D. M.; GRIFFIN, D. C.
Revista:
PHYSICAL REVIEW A - ATOMIC, MOLECULAR AND OPTICAL PHYSICS
Editorial:
The American Physical Society
Referencias:
Año: 2002 vol. 65 p. 52728 - 52748
ISSN:
1050-2947
Resumen:
The influence of electromagnetic fields on the dielectronic
recombination of O5+ ions has been measured at the Stockholm
heavy ion storage ring CRYRING. The experimental energy range covered
all 2s-->2p �n=0 resonances. Electric fields up to 600 V/cm
were applied and a noticeable enhancement of the dielectronic
recombination cross section as a function of electric-field strength was
observed. Field ionization of highly exited Rydberg states was used to
investigate the enhancement of the recombination rate for two narrow
bands of n states ranging from n~19-22 and from n~23-25. The
experimental data are compared to theory. After applying a
field-ionization model to the calculations, the field-free spectra show
good agreement with the experimental data. Although experiment and
theory show the same trend of increasing strength of dielectronic
recombination with increasing external electric field and with
increasing n, quantitative discrepancies remain.