| Budget Amount *help |
¥17,160,000 (Direct Cost: ¥13,200,000、Indirect Cost: ¥3,960,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2019: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2018: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
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| Outline of Final Research Achievements |
The study has been performed to clarify the physics of X-ray amplification using inner-shell-ionized plasma produced by an intense laser pulse. A spatially-resolved single-shot spectrometer which can measure signal and reference spectra simultaneously was developed to diagnose changes of X-ray transmissions between plasma and solid. By using this spectrometer, XFEL spectra transmitted through a plasma produced by a high-power femtosecond laser pulse were measured. Dynamics of bound electrons in ions for a time scale of femto-picosecond could be obtained, although X-ray amplification could not be observed. This result is important to clarify a mechanism of gain formation in a plasma.
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