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A critical re-assignment of the Rydberg states of iodomethane based on new polarization data
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Image of FIG. 1.
FIG. 1.

REMPI spectra of CH3I; (2+1) in the range 53 800–54 800 cm−1, (a), and (2+1), (b), and (3+1), (c), in the range 58 000–59 800 cm−1. The spectra recorded with CP and LP light are shown in the lower and upper traces, respectively. The labels above the ladders show the Ω value of the Rydberg states. The * in (c) indicates the origin of a triplet [3/2]6p;0+ or 1 state.

Image of FIG. 2.
FIG. 2.

The (2+1), (a), and (3+1), (b), REMPI spectra of CH3I in the range 62 500–66 000 cm−1. See also caption to Fig. 1 .

Image of FIG. 3.
FIG. 3.

The (2+1) REMPI spectrum of CH3I in the range 67 500–70 400 cm−1. See also caption to Fig. 1 . The intense peak at 69 853 cm−1 and the four sharp, weak lines to higher and lower energy are due to the 4p 2 A′′2X 2 A′′2 transition in CH3. 19

Image of FIG. 4.
FIG. 4.

Part of the (2+1) REMPI spectrum of CH3I recorded with three different laser powers. The spectra are normalized to the intensity of the band at 64 194 cm−1.

Image of FIG. 5.
FIG. 5.

The 2P-AI spectrum of CH3I; overview, (a) and the low energy region, (b). See also caption to Fig. 1 .


Generic image for table
Table I.

Transition energies, T, effective quantum numbers, n*, and assignments of the Rydberg states converging on the 2Π3/2, [3/2], and 2Π1/2, [1/2], states of the ion observed in the 1-, 2-, and 3-photon excitation spectra of CH3I.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A critical re-assignment of the Rydberg states of iodomethane based on new polarization data