Hyperfine Interactions of the First Excited2+State ofO18in7+and6+Ions

Perturbed angular correlations were measured between 1.98-MeV

γ

rays de-exciting the 3.3-psec

2^{+}

state of

{}^{18}O

and the

{}^{18}O^{*}

particles following the reaction

{}^{12}C

(

{}^{18}O

{}^{18}O^{*}

)

{}^{12}C

at 33 MeV. A magnetic spectrometer was used to resolve the

{}^{18}O^{*}

ions into the component

8^{+}

7^{+}

, and

6^{+}

charge states, and the correlations were determined separately for each. The measurements yield information on hyperfine interactions in the

7^{+}

and

6^{+}

charge states. Limits are obtained on the ionic ground-state occupancies and on the value of the nuclear

g

factor.

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