Vacuum ultraviolet photoelectron spectrum of the PN(X1Σ+) molecule

Abstract
The vacuum ultraviolet photoelectron spectrum of the PN(X1Σ+) molecule has been recorded and interpreted with the aid of ab initio molecular orbital calculations. Three bands corresponding to ionization of the PN molecule have been observed with vertical ionization potentials of 11.88, 12.30 and 15.74 eV respectively. The properties of the observed states are compared with those of the low-lying ionic states of N2 and P2.
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