Abstract
As an auxiliary apparatus for calculations, the geometric radiation factors for the spiral are presented. The gas-phase deposition method using the thermal activation (Hot-Wire Chemical Vapor Deposition (HWCVD)) of precursor gases is widely used for the synthesis of diamond structures. The gas-jet modification of this method consists in activation of hydrogen and methane flows through a heated cylindrical channel and a spiral of tungsten [1, 2]. A peculiarity of this approach is the use of heterogeneous dissociation processes that occur during multiple collisions of molecules with a hot surface. This allows a significant increase in the dissociation of hydrogen. Tungsten is widely used in the deposition of diamond-like structures from mixtures of carbon-containing gases with hydrogen, both as a heating element, and as a catalyst for the dissociation of hydrogen [3].
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