Molecular effects on inner‐shell photoabsorption. K‐shell spectrum of N2

摘要: K‐shell photoabsorption spectra of the first‐row diatomic molecules N2, CO, and NO are known to depart drastically from behavior characteristic excitation in atoms. Below thresholds these dominated by a single, very intense peak rather than normal Rydberg structure, first 10–20 eV continuum exhibit broad band enhanced absorption, monotonic decrease. We use multiple‐scattering model compute discrete part 100 Ry photoionization for N2. This calculation accounts both novel features described above shows that they arise centrifugal barrier effects manifested as shape resonances high‐l components final state wavefunctions. These molecular origin, resulting interaction between photoelectron anisotropic field. also discuss energy dependence angular distributions, Kronig structu...