Preparation of highly enriched 12C target for measurement of stellar 12C(α,γ) reaction.

^<12> C(α,γ)^<16> O反应在确定氦燃烧后^<12> C和^<16> O的质量分数、碳和铁之间元素丰度分布以及超新星爆炸前铁核质量方面起着重要作用。在恒星温度下的反应截面仍有很大的不确定性。为了精确测量恒星温度附近的截面，我们制作了富集的12C靶。

The^<12> C(α,γ)^<16> O reaction plays an important role in determining the mass fraction of^<12> C and^<16> O after helium burning, abundance distribution of elements between carbon and iron, and the iron-core mass before a supernova explosion. The reaction cross section at the stellar temperature still has large uncertainty. In order to measure the cross section precisely near the stellar temperature, we produced the enriched 12C target.