Direct Production of ${}^{3}{He}^{+}$ ( $2 S$ ) Ions with an rf Ion Source and Nuclear Polarization

The measurement of photons from the quenching of

{}^{3}{He}^{+}

(

2 S

) state ions produced under special conditions by an rf ion source permit one to deduce a polarizable current of 260 nA, close to 5% of the total

{}^{3}{He}^{+}

current. Zeeman splitting and quenching of unwanted components can be effected at the ion source yielding directly a

{}^{3}{He}^{+}

beam with nuclear polarization.

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Direct Production ofHe+3(2S) Ions with an rf Ion Source and Nuclear Polarization