利用重叠函数的渐近归一化常数(ANC)计算了一系列核的价核子处于核外的几率及价核子密度分布的均方根半径〈r2〉1/2. 由于实验上抽取的核ANC近似与模型参数无关,因此由核ANC计算的核外几率和均方根半径是考察晕核的可靠且有效的观察量. 依价核子处于核外的几率大于50%为条件, 证实了一些核为晕核, 且给出了比较宽松的晕核出现的条件. 此外, 还用〈r2〉/R2≥1.5及〈r2〉1/2/rc≥2.0为判据考察了一系列晕核候选者. 最后, 利用r2算符在有限方势阱中的预期值给出了晕核的标度定律.
参考文献
| [1] | Tanihata I, Hamagaki H, Hashimoto O, et al. Measurements of Interaction Cross Sections and Nuclear Radii in Light p-shell Regien[J]. Phys Rev Lett, 1985, 55: 2 676. |
| [2] | Ozawa A, Bochkarev O, Chulkov L, et al. Measurements of Interaction Cross Sections for Light Neutron-rich Nuclei at Relativistic Energies and Determination of Effective Matter Radii[J]. Nucl Phys, 2001, A691: 599. |
| [3] | Alkhazov G D, Andronenko M N, Dobrovolsky A V, et al. Nuclear Matter Distributions in 6He and 8He from Small Angle p-He Scattering in Inverse Kinematics at Intermediate Energy[J]. Phys Rev Lett, 1997, 78: 2 313. |
| [4] | Tanihata I, Kobayashi T, Suzuki T, et al. Determination of the Density Distribution and the Correlation of Halo Neutrons in 11Li[J]. Phys Lett, 1992, B287: 307. |
| [5] | Carstion F, Trache L, Gagliardi C A, et al. Radios of 8Be from the Asymptotic Normalization Coefficient[J]. Phys Rev, 2001, C63: 054310-1. |
| [6] | Navin A, Bazin D, Brown B A, et al. Spectroscopy of Radioactive Beams from Single-neutron Knockout Reactions: Aplication to the sd shell nuclei 25Al and 26, 27, 28P[J]. Phys Rev Lett, 1998, 81: 5 089. |
| [7] | Liu Z H, Lin C J, Zhang H Q, et al. Asymptotic Normalization Coefficients and Neutron Halo of the Excited States in 12B and 13C[J]. Phys Rev, 2001, C64: 034312-1. |
| [8] | Liu Z H. Halo Nature of 14, 15C[J]. Chin Phys Lett, 2002, 19: 1 071. |
| [9] | Lewis R, Hayes A C. Deutron Stripping as a Probe of the Proton Halo in 17F[J]. Phys Rev, 2000, 2002, C61: 0473-1. |
| [10] | Zhou S H, Zhou J. Halo Structure of Isobaric Analogue States in A=21 and 17 Mirror Nuclei[J]. Chin Phys Lett, 2002, 19: 1 065. |
| [11] | Riisager K. Nuclear Halo States[J]. Rev Mod Phys, 1994, 1 105. |
| [12] | Riisager K, Fedorov D V, Jensen A S. Quantum Halos[J]. Europhys Lett, 2000, 49: 547. |
| [13] | Liu Z H, Zhang X Z, Zhang H Q. Nuclear Halo and Its Scaling Lows[J]. Phys Rev, 2003, C68: 024305-1. |
| [14] | Hamamoto I, Zhang X Z. Coupling of Particles Near Threshold to Shape Oscillatations[J]. Phys Rev, 1998, C58: 3 388. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%