NOVEL APPLICATIONS OF A SHAPE SENSITIVE DETECTOR 2: UV-MW RESONANCE
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Publisher:Ohio State University
We demonstrate the capability of using chirped pulsed Fourier transform microwave spectrometer (CP-FTMW) with UV double-resonance techniques. The application of this technique greatly simplifies the rotational spectrum, facilitating the simple assignment of the rotationally resolved electronic spectra of several compounds of interest. A Sirah dye laser pumped by a ND:YAG laser generated a variable laser beam which was then transferred to the UV region using a doubling crystal. Prior knowledge of $\Delta$J assignments from the rotational spectrum allowed for the straightforward monitoring of the intensity of specific rotational lines in the ground state spectrum as we scanned the UV laser beam. UV-MW double resonance was seen for many of the $\Delta$J1$\rightarrow$2, 2$\rightarrow$3, and 3$\rightarrow$4 rotational transitions of Aniline and Phenylacetylene. The application of this technique to other molecular systems and processes will also be discussed.
Author Institution: Department of Chemistry, Purdue University, West Lafayette, IN, 47907.