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Theoretical investigation of near-threshold photoionization of N2

Conner Penson1,2, Mehdi Ayouz2,3, and Viatcheslav Kokoouline1

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Phys. Rev. A 114, 023102 – Published 10 August, 2026

DOI: https://doi.org/10.1103/3zbg-wcdc

Abstract

The photoionization (PI) spectrum of the N2 molecule is modeled using a first-principles approach combining the multichannel quantum defect theory and electron scattering calculations performed using the uk r-matrix codes. The PI spectra were determined starting from the ground and several excited vibrational levels of N2 in the ground electronic state X1Σg+. Excited electronic states and vibrational motion of the N+2 ion are accounted for. The spectrum obtained for the lowest vibrational level of N2 was compared to the available experimental data. Major resonances in the obtained spectrum were characterized using the quantum defect technique.

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References (29)

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Phys. Rev. A 114, 023102– Published 10 August, 2026
  • Received 9 January 2026
  • Accepted 8 May 2026
Article part of CHORUS
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