JpGU-AGU Joint Meeting 2020

Presentation information

[J] Poster

O (Public ) » Public

[O-04] Poster presentations by senior high school students

convener:Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute), Katsuyoshi Michibayashi(Department of Earth and Planetary Sciences, Nagoya University), Miwa Kuri(Japan Meteorological Agency), Keiko Konya(Japan Agency for Marine-Earth Science and Technology)

[O04-P19] Spectroscopy of plasma generated in a microwave using a newly developed simple spectrometer with high resolution

*Ayaka Akase1, *Kento Takase1, *Reiji Iwamoto1, *Keishi Okumi1, *Mayu Naito1, *Hiromu Fujimoto1, *Yamato Yasuhara1, *Natsuki Yamamoto1 (1.Hyogo Prefectural Himeji Higashi Senior High School Science Club ( Plasma team ))

Keywords:plasma in a microwave oven, developed of the simple spectroscope, exciting of the sodium

We conducted the following basic research on plasma. When a mechanical pencil’s core is heated in a microwave oven, yellow plasma is emitted. High resolution spectrometers are expensive and we cannot buy them. In order to confirm the identity of this light, we developed the simple spectroscope that has the resolution to split the D line of a sodium lamp into two lines, and that can obtain a stable and clear image with a digital camera. We used this spectrometer to split the plasma light emitted from the mechanical pencil’s core in a microwave oven. As a result, the light was found to be a strong emission line of sodium. The plasma is generated by exciting the sodium of the ceramic table by the mechanical pencil's core acting as an antenna.