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- Title
A study of flames with millimeter-wave radiation.
- Authors
Jing-ran Xu; Ru Peng; Chen-guang Zhu; Xiao Xie; Chen-guang Yan
- Abstract
It is a valuable issue to explore whether a flame can radiate microwaves, in spite of the electric field formed in the flame. Presented herein is an experimental study on a series of flames with millimeterwave radiation in the combustion of pyrotechnic films. The pyrotechnic films were composed of ultrafine red phosphorus (P), sodium nitrate (NaNO3), Polyvinyl Alcohol (PVA) and some additives such as chopped carbon fibers (CFs) and aluminized glass fibers (GFs). The combustion temperatures and millimeter-wave radiation signals of the flames were measured, the millimeter-wave emissivity and spectral radiant exitance were calculated to describe the millimeter-wave radiation intensity. The results demonstrate that the flame of the pyrotechnic films based on P/NaNO3/CFs can radiate millimeter waves, and different materials and their proportion have a great effect on the millimeter-wave radiation intensity.
- Subjects
MICROWAVES; ELECTRIC fields; POLYVINYL alcohol; MICROSCOPY; COMPOSITE materials
- Publication
Defence Technology, 2020, Vol 16, Issue 4, p876
- ISSN
2096-3459
- Publication type
Article
- DOI
10.1016/j.dt.2019.11.004