Shengquan Yan

Current progress of nuclear astrophysics study and BRNBF at CIAE

Abstract A secondary beam line (GIRAFFE) at the Beijing tandem accelerator lab was constructed for yielding low energy secondary beams. The current progress on the study of nuclear astrophysics and nuclear structure is presented. Up to now, we have carried out measurement of 7 Be(d,n) 8 B, 11 C(d,n) 12 N, 8 Li(d,n) 9 Be and 6 He(p,n) 6 Li reactions. The proposed Beijing radioactive nuclear beam facility and its current R&D progress are briefly introduced. This facility is based on the exist HI-13 tandem accelerator. A proton cyclotron will be built to provide 100 MeV 200 μA proton beam, together with an isotope separator on line system and a super-conducting heavy ion LINAC. By this facility, intensity of order of 10 9 pps radioactive nuclear beams for mass up to A =120 will be produced.

A proposed direct measurement of cross section at Gamow window for key reaction 19F(p,α) 16O in Asymptotic Giant Branch stars with a planned accelerator in CJPL

In 2014, the National Natural Science Foundation of China (NSFC) approved the Jinping Underground Nuclear Astrophysics laboratory (JUNA) project, which aims at direct cross-section measurements of four key stellar nuclear reactions right down to the Gamow windows. In order to solve the observed fluorine overabundances in Asymptotic Giant Branch (AGB) stars, measuring the key 19F(p,α)16O reaction at effective burning energies (i.e., at Gamow window) is established as one of the scientific research sub-projects. The present paper describes this sub-project in details, including motivation, status, experimental setup, yield and background estimation, aboveground test, as well as other relevant reactions.

Determination of the astrophysical12N(p,γ)13O reaction rate from the2H(12N,13O)nreaction and its astrophysical implications

The evolution of massive stars with very low-metallicities depends critically on the amount of CNO nuclides which they produce. The

Study on the desorption yield for natural botanic sample induced by energetic heavy ions

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INDIRECT MEASUREMENTS OF NUCLEAR ASTROPHYSICS REACTIONS USING UNSTABLE NUCLEAR BEAMS

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Nuclear Astrophysics Experiments at CIAE

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Radii of the bound states in 16 N from the asymptotic normalization coefficients

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Experimental studies on the primordial lithium abundance

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Indirect Measurement of Astrophysical13C(α, n)16OS-Factors

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Current progress of nuclear astrophysics experiments at CIAE

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