  This work investigates the capability of TMA ((CH3)3N) molecules to shift the
wavelength of Xe VUV emission (160-188 nm) to a longer, more manageable,
wavelength (260-350 nm). Light emitted from a Xe lamp was passed through a gas
chamber filled with Xe-TMA mixtures at 800 Torr and detected with a
photomultiplier tube. Using bandpass filters in the proper transmission ranges,
no reemitted light was observed experimentally. Considering the detection limit
of the experimental system, if reemission by TMA molecules occurs, it is below
0.3% of the scintillation absorbed in the 160-188 nm range. An absorption
coefficient value for xenon VUV light by TMA of 0.43+/-0.03 cm-1.Torr-1 was
also obtained. These results can be especially important for experiments
considering TMA as a molecular additive to Xe in large volume optical time
projection chambers.
