| Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2010: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2009: ¥10,010,000 (Direct Cost: ¥7,700,000、Indirect Cost: ¥2,310,000)
Fiscal Year 2008: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2007: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Research Abstract |
The beta-decay half-lives of 38 neutron-rich isotopes (18 for first time) from Kr to Tc, which play important role in the r-process nucleosynthesis, have been measured. The results when compared with previous standard models indicate the overestimation in the predicted half-lives by a factor of 2 or more in the A～110 region. The results suggest a more rapid flow of the rapid neutron capture process (r-matter flow) through this region around mass A=110～125 than previously predicted.
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