Rotational-resolved pulsed field ionization photoelectron study of NO[sup +](a [sup 3][Sigma][sup +],v[sup +]=0[endash]16) in the energy range of 15. 6[endash]18. 2 eV

• Published in: The Journal of chemical physics 1999-08, Vol.111:5
• Main Authors: Jarvis, G.K., Song, Y., Ng, C.Y.
• Format: Article
• Language: English
• Subjects: ATOMIC AND MOLECULAR PHYSICS; BREMSSTRAHLUNG; CATIONS; CHALCOGENIDES; CHARGED PARTICLES; ELECTROMAGNETIC RADIATION; ELECTRON SPECTROSCOPY; ENERGY LEVELS; EXCITED STATES; IONIZATION; IONIZATION POTENTIAL; IONS; MOLECULAR IONS; MOLECULAR STRUCTURE; NITRIC OXIDE; NITROGEN COMPOUNDS; NITROGEN OXIDES; OXIDES; OXYGEN COMPOUNDS; PHOTOELECTRON SPECTROSCOPY; PHOTOIONIZATION; RADIATIONS; ROTATIONAL STATES; SPECTROSCOPY 664200 > Spectra of Atoms & Molecules & their Interactions with Photons-- (1992-); SYNCHROTRON RADIATION
• ISSN: 0021-9606; 1089-7690
• DOI: 10.1063/1.479462

We have obtained rotationally resolved pulsed field ionization photoelectron (PFI-PE) spectra of NO in the energy range of 15.6[endash]18.2 eV, covering ionization transitions of NO[sup +](a hthinsp;[sup 3][Sigma][sup +],v[sup +]=0[endash]16,J[sup +])[l arrow]NO(X hthinsp;[sup 2][Pi][sub 3/2,1/2],v[sup [double prime]]=0,J[sup [double prime]]). The PFI-PE bands for NO[sup +](a hthinsp;[sup 3][Sigma][sup +],v[sup +]=1[endash]5,7[endash]10,12[endash]14,16) obtained in this experiment represent the first rotationally resolved spectroscopic data for these states. The simulation of these PFI-PE bands provides accurate molecular constants for NO[sup +](a hthinsp;[sup 3][Sigma][sup +],v[sup +]=0[endash]5,7[endash]10,12[endash]14,16), including ionization energies, vibrational constants ([omega][sub e][sup +]=1295.2[plus minus]0.1 hthinsp;cm[sup [minus]1], [omega][sub e][sup +][chi][sub e][sup +]=15.198[plus minus]0.002 hthinsp;cm[sup [minus]1]), and rotational constants (B[sub e][sup +]=1.3501[plus minus]0.0070 hthinsp;cm[sup [minus]1], [alpha][sub e][sup +]=0.0206[plus minus]0.0001 hthinsp;cm[sup [minus]1]). As observed in the PFI-PE study of NO[sup +](X hthinsp;[sup 1][Sigma][sup +]), this experiment reveals a generally increasing trend for the maximum [Delta]J value and intensities of higher [Delta]J branches as v[sup +] (or bond distance) for NO[sup +](a hthinsp;[sup 3][Sigma][sup +]) is increased. This observation can be taken as strong support of the electron-molecular-ion-core scattering model for angular momentum and energy exchanges in the threshold photoionization of NO. [copyright] [ital 1999 American Institute of Physics.]