| Budget Amount *help |
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2019: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2018: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2017: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
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| Outline of Final Research Achievements |
An experiment to search for time-reversal symmetry violation was performed and data was successfully collected. The experiment measured the transverse polarization of electron emitted from spin-polarized Li-8 nuclei. The spin-polarized unstable nuclei were produced using ISAC at the TRIUMF in Canada, and a transverse polarimeter based on the principle of measuring the scattering asymmetry of Mott scattering using a cylindrical drift chamber as an electron tracking detector was constructed and used. Experiments were performed in 2016 and 2017 and data were successfully collected, yielding data on R correlations that break time-reversal symmetry, N correlations that do not break time-reversal symmetry but have not been observed before, and time variations of polarized nuclear half-lives that can verify Lorentz symmetry breaking.
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