Knowledge Bank

The hot hand progression ($v=2\leftarrow 1,v=3\leftarrow 2,v=4\leftarrow 2,v=4\leftarrow 3andv=5\leftarrow 4$) as well as high J transations of the fundamental of the $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Sigma -$ ground electronic state of OH+ have been observed using He-dominated plasmas in the infrared between $3250.2400cm-1$. Our difference frequency spectrometer was used as the infrared source with velocity modulation for detection. OH+ was produced in an AC glow discharge of 50 mtorr $O2$, 50 mtorr $H2$ and 10 toro Her Because of its high ionization potential and low proton affinity. He is very effective in raising the electronic temperature of plasmas without reducing ion concentration. 270 transitions $(v=0.5)$ have been simultaneously fit by a non-linear least-squares program for the appropriate linear molecule Hamiltonian for a $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Sigma$ state. Bv-Dv-Hv- as well as the spin-spin and spin-rotation $\lambda v-yv$ constants have been determined for nearly all states. The data have also been fit to the $Dunham1$ model potential where the vibration-rotation coefficients $Ykl$ are expressed as $\ast \ast \ast \ast$ $EvJ=\sum klYkl(v+1/2)k[J(J+1)]1$The vibrational and rotational temperatures will also be discussed.