| Budget Amount *help |
¥24,440,000 (Direct Cost: ¥18,800,000、Indirect Cost: ¥5,640,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2015: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2014: ¥13,910,000 (Direct Cost: ¥10,700,000、Indirect Cost: ¥3,210,000)
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| Outline of Final Research Achievements |
We aim to measure nuclear spins and electromagnetic moments of low-yield radioactive isotopes (RIs) with our new laser spectroscopy technique using superfluid helium as an effective stopper of energetic RI beam. In the previous experiments, large background signals caused by stray laser light prevented the measurement with low-yield RIs. Our new-developed photodetection system including double-grating monochromators enabled us to reduce the background signals to approximately 1/10000. Using this new photodetection system, we performed a laser spectroscopy experiment with energetic 85Rb beam injected into superfluid helium. We observed double resonance signals with improving the signal-to-noise ratio to two orders of magnitude.
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