Citation: WU Dan, ZHANG Li-Min, ZHOU Dan-Na. Study on the Photodissociation Mechanism of N₂O⁺ via B²П_i←X²П Transitions[J]. Acta Physico-Chimica Sinica, ;2014, 30(8): 1575-1580. doi: 10.3866/PKU.WHXB201405202 shu

Study on the Photodissociation Mechanism of N₂O⁺ via B²П_i←X²П Transitions

1.
Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China

Received Date: 15 April 2014
Available Online: 20 May 2014
Fund Project:

Photofragment (NO⁺ and N₂⁺) excitation (PHOFEX) spectra of N₂O⁺ via B²П_i←X²Π transitions was obtained over the wavelength range from 230 to 275 nm by preparing N₂O⁺(X²Π(000)) ions via [3+1] resonance enhanced multiphoton ionization of N₂O molecules at 360.50 nm. On the basis of the approximation of harmonic oscillation between N and NO or between N₂ and O, the Franck-Condon factors for the B²П_i(00n)←X²Π(000) transitions of N₂O⁺ ions were calculated using the potential curves and wavefunctions of the harmonic oscillator. The results of such calculations were compared with the photodissociation spectra of the B²П_i(00n)←X²Π(000) transition so as to estimate the validity of the rotational constants and the bond length of the B²П_i state obtained from previous studies. The photodissociation mechanism of the B²П_i(00n)←X²Π(000) transitions of N₂O⁺ ions and the product branching ratios were also discussed.
- Photodissociation,
- Nitrous oxide ion,
- Franck-Condon factor
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沈阳化工大学材料科学与工程学院沈阳 110142

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Study on the Photodissociation Mechanism of N₂O⁺ via B²П_i←X²П Transitions