MEASUREMENT OF THE CONTRIBUTIONS OF HIGH-N SATELLITE LINES TO THE KAPPA-BETA LINES OF HE-LIKE AR16+

We have measured the contributions from high-n dielectronic satellite lines to the 1s(2)-1s3p P-1(1) resonance line of heliumlike Ar16+. Usi ng a high-resolution crystal spectrometer to analyze the x-ray emissio n of ions trapped and excited in an electron-beam ion trap, contributi ons from satellite levels of the type 1s3lnl' - 1s(2)nl', for n = 3,4, 5 and n greater than or equal to 6, have been recorded. The resonance strength of the n = 3 satellites was measured to be (4.65+/-0.67) x 10 (-21) cm(2) eV. The resonance strength of the n = 4 satellites was det ermined to be larger than that of the n = 3 satellites and that of the n = 5 satellites was found to be nearly equal to the resonance streng th of the n = 3 satellites. The n(-3) dependence of resonance strength s expected from the n scaling of the Auger rates is thus shown to not be valid for the satellites studied in our measurements.