| Budget Amount *help |
¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2016: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2015: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2014: ¥8,970,000 (Direct Cost: ¥6,900,000、Indirect Cost: ¥2,070,000)
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| Outline of Final Research Achievements |
Polarization resolved VUV spectroscopic measurement has been made for the Lyman-alpha line of hydrogen atoms in the Large Helical Device at National Institute for Fusion Science. The polarization degree takes about 5% at the maximum and shows a decaying tendency with increasing electron density of the plasma. On the other hand, an atomic model has been constructed based on the polarization creation cross section due to electron collisions. When a velocity function which has different temperatures in the direction parallel and perpendicular to the magnetic field direction, respectively, is adopted, it is confirmed that the line emission shows a similar degree of polarization to the measurement with anisotropy of about 10% in the velocity distribution function.
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