dc.creator Meerts, W. Leo en_US dc.creator Majewski, W. A. en_US dc.creator Ubachs, W. en_US dc.creator Van Der Meer, B. J. en_US dc.creator Drabe, K. E. en_US dc.date.accessioned 2006-06-15T17:39:54Z dc.date.available 2006-06-15T17:39:54Z dc.date.issued 1984 en_US dc.identifier 1984-FD-2 en_US dc.identifier.uri http://hdl.handle.net/1811/16613 dc.description $^{1}$ B.J. van der Meer, H. Th. Jonkman, J. Kommandeur, W.L. Meerts and W.A. Majewski Chem. Phys. Lett. 92 (1982) 565 en_US dc.description Author Institution: Fysisch Laboratorium, Katholieke Universiteit; Herzberg Institute of Astrophysics, National Research Council of Canada; Laboratory of Physical Chemistry, University of Groningen en_US dc.description.abstract The $S_{1}(^{1}B_{1})\leftarrow S_{0}(^{1}A_{1})$ transition in pyrimidine has been investigated. High resolution laser induced fluorescence spectra were obtained by crossing a well collimated molecular beam with UV radiation of an intra-cavity frequency doubled ring laser. The extreme resolution enabled us to observe the molecular eigenstates of the excited electronic state. Most of the spectral features arising from the $S_{1}$ state could be interpreted in terms of a slightly perturbed axis switched asymmetric rotor spectrum. Perturbations are found both in the energy levels of the $S_{1}$ state and in the relative intensities of the transitions. This is in agreement with the much smaller background triplet level density in pyrimidime as compared to $pyrazine^{1}$. Single level lifetime measurements have been carried out for rotational states up to $J^{\prime} = 4$. The results suggest a lengthening of the lifetimes of the excited state with increasing values of $K^{\prime}$. The question put in the title will be discussed. en_US dc.format.extent 1471495 bytes dc.format.mimetype image/jpeg dc.language.iso English en_US dc.publisher Ohio State University en_US dc.title IS PYRIMIDINE AN INTERMEDIATE STATE MOLECULE? en_US dc.type article en_US
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