Precision spectroscopy and comprehensive analysis of perturbations in the $A\,{}^1\Pi(v=0$) state of ${}^{\rm 13}$C${}^{\rm 18}$O

We have reinvestigated the A^1\Pi(v=0)level of ^{13}^{18} using new high-resolution spectra obtained via multi-photon laser excitation as well as with synchrotron-based Fourier-transform absorption spectroscopy of the A^1\Pi -\textrm{X}^1\Sigma^+(0, 0) e^3\Sigma^--\textrm{X}^1\Sigma^+(1, 0) d^3\Delta-\textrm{X}^1\Sigma^+(4, 0) a'^3\Sigma^+-\textrm{X}^1\Sigma^+(9, 0) and \atX(11, 0)bands. In addition,...