Analysis of the pressure, density, and velocity distributions in a spectroscopic heat‐pipe oven and the resulting limitations on device performance

The pressure, density, and velocity distributions within a cylindrical heat‐pipe oven are analyzed for inviscid, compressible flow in either the radial or axial direction. For sufficiently large but readily attainable heat flows, density variations within the heat pipe as large as 50% which can lead to inaccuracies in quantitative spectroscopic investigations are predicted.