Fig. 1. Radioactive secondary beam line in HI-13 tandem accelerator
Fig. 2. Typical inverse kinematics experiment setup for radioactive beam
[4] Fig. 3. Angular distribution of
7Be(d, n)
8B transfer reaction and DWBA fitting results
[2] Fig. 4. Comparison between astrophysical S-factor of
13N(p, γ)
14O obtained by Nuclear Astrophysics Research Group and other results
[3] Fig. 5. Angular distribution of
8Li(d, p)
9Li reaction and four DWBA results (a) and the astrophysics reaction rate of
8Li(n, γ)
9Li (b)
[4] Fig. 6. Comparison between the angular distribution of
1H(
6He,
6Li)n reaction and different DWBA results
[21] Fig. 7. Exciting function of
13N+p elastic resonance scattering and results analyzed by
R-matrix
[23] Fig. 8. Exciting function of
17F+p elastic resonance scattering and results analyzed by
R-matrix
[25] Fig. 9. Q3D magnetic spectrometer
Fig. 10. Two-dimensional position-sensitive X4 silicon detector array
Fig. 11. Angular distribution of
13C(
7Li,
6He)
14N reaction producing
14N ground state and the first excited state — the DWBA results reproduced the experimental data well
[29] Fig. 12. Angular distribution of
13C(
9Be,
8Li)
14N reaction and four sets of theoretical calculation results
[30] Fig. 13. Effect spectrum and background spectrum of
25Mg(
7Li,
6He)
26Al reaction
[32] Fig. 14. Angular distribution and calculation results of
15N(
7Li,
6Li)
16N reaction
[33] Fig. 15. Comparison of results of astrophysical reaction rates of
13C(α, n)
16O
[42] Fig. 16. Astrophysical SE2 factor of
12C(α, γ)
16O
[52]The data points represent the results of direct measurement (the uncertainty is 56%), the solid line represents the result of considering the data of
16O ground state ANC (the uncertainty is reduced to 10%), and, compared with the latest value recommended by RMP (dashed line)
[53], the new results increase by 55%.
Fig. 17. Relationship between the black hole mass and the initial mass of the He core of a star, which finally forms the black hole (a), and data of black hole mass measured by LIGO and Virgo (b)
[54]. In the Fig.(a), the point and dashed line below are, respectively, the upper and lower limits based on the present work, and the point and dashed line above are, respectively, the upper and lower limits based on the latest review of reaction rates. There is an obvious difference between the two results.
束流 Beams | 产生反应 Producing reaction | 能量±半宽 Energy±half-width / MeV | 纯度 Purity / % | 强度 Intensity / pps |
---|
6He | 2H(7Li, 6He)3He | 37.3±0.5 | 99 | 450 | 7Be | 1H(7Li, 7Be)n | 30.8±1.3 | 99 | 900 | 8Li | 2H(7Li, 8Li)p | 40.0±0.5 | 88 | 2 000 | 10C | 1H(10B, 10C)n | 55.9±3.5 | 96 | 200 | 11C | 1H(11B, 11C)n | 63.4±2.7 | 80 | 1 000 | 13N | 2H(12C, 13N)n | 57.8±2.1 | 92 | 1 200 | 15O | 2H(14N, 15O)n | 66.0±3.6 | 91 | 800 | 17F | 2H(16O, 17F)n | 76.1±3.7 | 90 | 2 000 | 18F | 3He(16O, 18F)p | 75.7±2.2 | 85 | 800 | 19Ne | 4He(16O, 19Ne)p | 56.6±3.4 | 47 | 120 | | 3He(19F, 19Ne)3H | 68.6±3.8 | 42 | 70 | 22Na | 4He(19F, 22Na)n | 52.9±1.9 | 57 | 100 |
|
Table 1. Radioactive nuclear beams produced by GIRAFFE