A TEMPERATURE-CON TROLLED LONG-PATH ABSORPTION CELL

Abstract

A large temperature-controlled multi-pass absorption cell has recently been constructed. It is capable of operation over the range of $-50^{\circ}$ C to $+50^{\circ}$ C at maximum path lengths exceeding one kilometer. The cell and its support equipment include several unique design features which will be described, and its application to absorption studies with laser sources or Fourier transform spectroscopy will be discussed.