Optical emission spectroscopic investigation of the millimeter/thz wave and magnetic field combined effect on the cold plasma abnormal region

Based on the growth of terahertz detection techniques, this study goal to investigate experimentally the impact of the terahertz radiation and magnetic fields on the glow discharge detectors GDDs (cold plasma) using plasma spectroscopy techniques (optical emission spectroscopy methods), which gave for more details via different techniques. that can be supported the neon indicator lamps GDDs as inexpensive detectors for terahertz radiation. Where interaction the glow discharge detectors GDDs with the magnetic field and THz radiation were studied by optical emission spectroscopy. The experiment setup contains a plasma source which is the glow discharge detector GDD. Also, the electromagnetic field was generated by two EM coils. And the THz radiation was generated by the THz system which designed via Schottky Terahertz Diodes. While the results were collected by AvaSpec-ULS3648 Star-Line High-resolution Fiber-optic Spectrometer. The analysis methods that have been utilised are the ratio method and subtraction method. At the end of the examination, the results were very encouraging, represented by the effect of terahertz radiation and magnetic field on GDD was clearly. Where the THz radiation works to suppress the light intensity of the GDD, reverse magnetic field effect. While the magnetic field works to support the light intensity of the GDD. Therefore, this study supports the other researchers which utilised the inexpensive tool GDDs to detect the THz radiation. And, the optical emission spectroscopy is very useful to examine the GDDs than using the light intensity measurements of the GDDs.