实验通过17F＋p共振弹性散射研究了复合核18 Ne激发态中与天体核反应14 O（#,p）17F相关的共振态性质。利用兰州放射性束流线（RIBLL）对弹核碎裂反应产生的放射性束17F进行了分离和提纯。经过降能后,能量为4.22 AMeV的17F束流轰击在T2终端的厚氢靶（CH2）n上。两套（E-ESi探测器望远镜放置在两个不同的探测角度θlab≈2.3°和14°上,对反冲质子的角度和能量进行了测量。实验观测到了复合核18 Ne的几条质子共振能级。通过R-Matrix理论程序对激发函数进行拟合,得到了共振态的能量、自旋、宇称和衰变宽度等共振参数。
Resonant properties in 18Ne relevant to the stellar reaction of 14O（α,p）17F have been investigated through a resonant elastic scattering of 17F＋p.The 17F RI beam was produced via a projectile-fragmentation reaction,and subsequently separated and purified by Radioactive Ion beam Line in Lanzhou（RIBLL）.After a series of energy degradation,a 4.22 AMeV 17F beam bombarded a thick（CH2）n target at T2 terminal.Energy and angle of the recoiled protons were measured by two sets of ΔE-E silicon telescope at θlab≈2.3°,14° respectively.Several resonances in 18Ne were observed,and their resonant parameters including energy,spin-parity and decay width have been determined by an R-Matrix analysis of the experimental excitation function.
参考文献
| [1] | Champage A E, Wiescher M. Annu Rev Nucl Part Sci, 1992, 42: 39. |
| [2] | Wiescher M, Schatz H, Champage A E. Phil Tran R Soc, 1998, A356: 2105. |
| [3] | Hahn K I, Garcia A, Adelberger E G, et al. Phys Rev, 1996, C54: 1999. |
| [4] | Hass B, Greene J P, Henderson D, et al. Plays Rev Lett, 1999, 82: 3964. |
| [5] | Gomez del Campo J, Galindo-Uribarri A, Beene J R, et al. Phys Rev Lett, 2001, 86: 43. |
| [6] | Blackmon J C, Bardayan D W, Bradfield-Smith W, et al. Nucl Phys, 2001, A688: 142(c). |
| [7] | Hass B, Jiang C L, Rehm K E, et al. Phys Rev, 2002, C65: 035803. |
| [8] | Blackmon J C, Bardayan D W, Bradfield-Smith W, etal. Nucl Phys, 2003, A718: 127(c). |
| [9] | Notani M, Kubono S, Teranishi T, et al. Nucl Phys, 2004, A746: 113(c). |
| [10] | He J J, Woods P J, Davinson T, et al. Phys Rev, 2009, C80: 042801(R). |
| [11] | Jin S J, Wang Y B, Wang B X, et al. Chin Phys Lett, 2010, 27: 032102. |
| [12] | Bardayan D W, Blackmon J C, Chae K Y, et al. Phys Rev,2010, C81: 065802. |
| [13] | Sun Z, Zhan W L, Guo Z Y, et al. Nucl Instr and Meth, 2003, A503: 496. |
| [14] | 马朋,王建松,段利敏,等.原子能科学技术,2011,45(3):356. |
| [15] | Audi G, Wapstra A H, Thibault C. Nucl Phys, 2003, A729: 337. |
| [16] | Lane A M, Thomas R G. Rev Mod Phys, 1958, 30: 257. |
| [17] | He J J, Wang H W, Hu J, et al. arXiv: 1001.2053v1, 2010. |
| [18] | Nero A V, Adelberger E G, Dietrich F S, et al. Phys Rev, 1981, C24: 1864. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%