ROTATIONALLY RESOLVED PHOTODISSOCIATION SPECTROSCOPY OF THE $Ca^{+}$ -NN COMPLEX

Abstract

Author Institution: Department of Chemisty, University of GeorgiaMass selected resonance enhanced photodissociation spectroscopy is utilized to rotationally resolve the $(2,0,0) \leftarrow (0,0,0)$ vibronic member of the ${^{2}} \Pi \leftarrow X \ {^{2}} \Sigma$ electronic transition in $Ca^{+}-NN$. The $Ca^{+} -NN$ molecule is formed in a pulsed nozzle/laser vaporization cluster source, and rotationally resolved spectra are recorded by monitoring the $Ca^{+}$ channel as a function of photodissociation laser wavelength. Spectra are recorded for the molecules $Ca^{+}-{^{14}}N{^{14}}N$ and $Ca^{+}-{^{15}}N{^{15}}N$ allowing for determination of both the $Ca^{+}N$ and N-N bond Lengths in the complex. Preliminary results indicate that the and bond length is approximately 2.74 {\AA} in the ground state and 2.48 {\AA} in the excited state, while the N-N bond length remains approximately that of free nitrogen