19/<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mn>2</mml:mn></mml:mrow><mml:mrow><mml:mi mathvariant="normal">−</mml:mi></mml:mrow></mml:msup></mml:mrow></mml:math><i>g</i>factor in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">K</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>39</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow></mml:math>using a transient field-fusion reaction technique

The magnetic moment of the 19/${2}^{\mathrm{\ensuremath{-}}}$ state in $^{39}\mathrm{K}$ has been measured by the transient field technique. The state was excited by the inverse reaction $^{12}\mathrm{C}$${(}^{32}$S,p\ensuremath{\alpha}${)}^{39}$K and the recoil nucleus traversed a thin Gd foil. Its absolute g factor, g=0.35(3), was obtained by an internal calibration, which makes use of the magnetic moment of the 15/${2}^{+}$ state in $^{41}\mathrm{Ca}$ also excited in the same reaction. A mean g factor for the states ${3}^{\mathrm{\ensuremath{-}}}$, ${5}^{\mathrm{\ensuremath{-}}}$ in $^{36}\mathrm{Ar}$, g=0.52(6), determined in a simultaneous measurement is consistent with the self-conjugate nature of the nucleus, giving further support to the validity of the field calibration. The experimental result agrees with shell-model predictions.

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