| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2015: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Outline of Final Research Achievements |
In light nuclear systems, it is well known that alpha cluster structures appear in excited states. One of characteristic properties in the alpha cluster structures is a prominent extension of the matter radius. Typical example is the 3 alpha structure in 12C. The matter radii of the 3 alpha state is expected to be prominently enhanced in comparison to the matter radius of the ground state but the direct measurement of the 3alpha radius is completely impossible because of its short life time.
In this study, we have formulated a method of scattering radius, which characterizes a spatial size for final state productions in nuclear reactions. The scattering radius is sensitive to the matter radius of the final state produced by the nuclear reaction. We have applied this method to the alpha + 12C inelastic scattering, which goes to the 3 alpha state in 12C. We have confirmed that the matter radius of the 3 alpha state is enhanced by about 1 fm in comparison to the ground 12C nucleus.
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