Abstract
Threshold photoelectron–photoion coincidence (TPEPICO) spectra of ArKr were measured between the ionization threshold and 16.0 eV by using the penetrating field technique and synchrotron radiation. The ground state (X 1/2 state) vibrational progression of ArKr+ was observed from v′=2 to 27 and the first ionization energy was estimated to be 108 703±12 cm−1 by extrapolation to v′=0. The other excited states constructed from the ground state atom and ion were also observed. The ionization energies to the A1 3/2, A2 1/2, C1 3/2, B 1/2, and C2 1/2 states from the neutral ground state were 112 274, 117 388, 126 211, 126 614, and 127 952 cm−1, respectively.
Published Version
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