Knowledge Bank

“An extensive emission system of GaH, in the region 5200-6400 \AA, has been obtained from a King furnace containing gallium metal and hydrogen at $1500\circ C$;. Eight bands have been measured and analyzed on the assumption that they arise from a $\mathrm{<mrow\; data-mjx-texclass="ORD">3</mrow>}\Pi -X\mathrm{<mrow\; data-mjx-texclass="ORD">1</mrow>}\Sigma$ $transition.1$ The following constants have been determined ($cm-1)$: [FIGURE] Under the same conditions, a diffuse band system is observed between 4220 \AA and $4850\backslash AA1$. The vibrational differences of the lower state have been found to agree with those of the ground state given above. The bands appear to be double-headed consistent with $a1\Pi$; upper $state.1$”