subcritical instability tagged posts

New Phenomenon of Abrupt Excitation of Fluctuations in high-temperature plasma

Figure 2: This shows the restoring force against the growth of fluctuations. When the amplitude is lower than the threshold value, the amplitude approaches zero and is stable (black). Separating from the center, when the amplitude exceeds the threshold value, the amplitude abruptly grows red. Credit: National Institutes of Natural Sciences

Figure 2: This shows the restoring force against the growth of fluctuations. When the amplitude is lower than the threshold value, the amplitude approaches zero and is stable (black). Separating from the center, when the amplitude exceeds the threshold value, the amplitude abruptly grows red. Credit: National Institutes of Natural Sciences

In the Large Helical Device (LHD) at the National Institute for Fusion Science in Japan, researchers have developed the high-energy heavy ion beam probe, in order to perform potential measurement inside plasma that was generated in the LHD and have clarified the mechanism of this new phenomenon.

Seeking to achieve nuclear fusion, research on plasma of >100,000,000 C is being conducted around the world...

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