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Chinese scholars and overseas collaborators have made important progress in the study of key reactions in nuclear astrophysics in the Deep Earth Laboratory

 Last Update: 2021-10-21
 Source: Internet
 Author: User

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standard comparison experiment

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Paper link: https://link.
aps.
org/doi/10.
1103/PhysRevLett.
127.
152702
.

The JUNA experimental device is installed in the Jinping Underground Laboratory in China, which covers a rock layer of more than 2,400 meters thick
.

The JUNA experimental team has developed a 400 kV accelerator with the strongest beam current in the deep earth, and established a high-efficiency and large solid-angle BGO gamma-ray, neutron detector and charged particle detector array

The origin of fluorine in the universe is an important scientific issue and an important research direction of nuclear astrophysics
.

There are theories that the AGB star is the main synthesis site of fluorine, and the current AGB star model cannot explain the phenomenon of fluorine overabundance observed in astronomy

The results of this experiment are of great significance to explain the problem of excess fluorine in the universe, opening a new stage of nuclear astrophysics research using JUNA

Figure 1 Comparison of gamma-ray spectra obtained from ground and deep ground laboratories

Figure 2 Astrophysical S factor of ¹⁹ F(p,αg) ¹⁶ O reaction

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