Rotational propensities in the state selection of NH3+ by pulsed-field ionization
NH+ 3 ions have been prepared in unique vibration-rotation states ν+ 2, N+, K+, by pulsed-field ionization of high Rydberg states of NH3, populated by two-colour multiphoton excitation. The selected states, ranging from ν+ 2 = 0 to 7 and N+, K+ ≤ 4 are accessed via the B and C′ states as intermediat...
| Main Authors: | , , |
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| Format: | Journal article |
| Published: |
1997
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| Summary: | NH+ 3 ions have been prepared in unique vibration-rotation states ν+ 2, N+, K+, by pulsed-field ionization of high Rydberg states of NH3, populated by two-colour multiphoton excitation. The selected states, ranging from ν+ 2 = 0 to 7 and N+, K+ ≤ 4 are accessed via the B and C′ states as intermediates. The application of multichannel quantum defect theory to the understanding of the rotational propensities in the mass-analysed threshold ionization spectra is discussed. It is demonstrated that the interactions of the Rydberg pseudo-continuum both with bound Rydberg states and with other continua can be modelled. |
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