Knowledge Bank

A new $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Pi$ electronic state of PtO has been observed between 7100 $cm-1$ and 8015 $cm-1$ above $the3\sum -$ ground state. The $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Pi 2$ - $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\sum 1-$, $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Pi 1$ - $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\sum 1-$, and $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Pi \infty$ - $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\sum 1-$ subbands were recorded in emission from a Pt Hollow cathode with the Fourier transform spectrometer associated with the McMath Solar Telescope at Kitt Peak. Molecular constants, including $\Omega$-doubling parameters for the new electronic state, have been determined from the data.