1. Carbon monoxide (CO) is photoionized with a λ = 75 nm light source. The onset of the observed photoelectron spectrum is shown below. Determine the adiabatic ionization energy (IEadia) of CO, and the harmonic vibrational constant (we) and anharmonicity constant (@exe) of ground state CO+. Relative Intensity / a.u. 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.500 0.7006 0.9488 1.000 1.2008 1.4565 1.500 eKE / eV 1.7160 1.9792 2.000 2.2463 2.5170 2.500

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1. Carbon monoxide (CO) is photoionized with a λ = 75 nm light source. The onset of the
observed photoelectron spectrum is shown below. Determine the adiabatic ionization energy
(IEadia) of CO, and the harmonic vibrational constant (@e) and anharmonicity constant (@exe) of
ground state CO+.
Relative Intensity / a.u.
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.500
0.7006
0.9488
1.000
1.2008
1.4565
1.500
eKE / eV
1.7160
1.9792
2.000
2.2463
2.5170
2.500
Transcribed Image Text:1. Carbon monoxide (CO) is photoionized with a λ = 75 nm light source. The onset of the observed photoelectron spectrum is shown below. Determine the adiabatic ionization energy (IEadia) of CO, and the harmonic vibrational constant (@e) and anharmonicity constant (@exe) of ground state CO+. Relative Intensity / a.u. 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0.500 0.7006 0.9488 1.000 1.2008 1.4565 1.500 eKE / eV 1.7160 1.9792 2.000 2.2463 2.5170 2.500
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