The properties of halo structure for 17B
Tóm tắt
The total reaction cross section (1724 ± 93 mb) of 17B at the energy of 43.7 A MeV on C target has been measured by using the transmission method at the Radioactive Ion Beam Line in Lanzhou (RIBLL). Assuming 17B consists of a core 15B plus two halo neutrons, the total cross section of 17B on C target was calculated with the zero-range Glauber model, where double Gaussian density distributions and Gaussian plus HO density distributions were used. It can fit the experimental data very well. The characteristic of halo structure for 17B was found with a large diffusion of the neutrons density distribution.
Tài liệu tham khảo
Jonson B. Light dripline nuclei. Phys Rep, 2004, 389: 1–59
Ren Z Z, Xu G O. A three-body model of 11Li, 14Be and 17B. Phys Lett B, 1990, 252: 311–313
Suzuki T, Kanungo R, Bochkarev O, et al. Nuclear radii of 17,19B and 14Be. Nucl Phys A, 1999, 658: 313–326
Suzuki T, Ogawa Y, Chiba M, et al. Momentum distribution of 15B fragments from the breakup of 17B. Phys Rev Lett, 2002, 89: 012501-1
Yamaguchi Y, Wu C, Suzuki T, et al. Density distribution of 17B from a reaction cross-section measurement. Phys Rev C, 2004, 70: 054320
Kanungo R, Elekes Z, Baba H, et al. Excited states in neutron rich boron isotopes. Phys Lett B, 2005, 608: 206–214
Sun Z Y, Zhan W L, Guo Z Y, et al. The radioactive ion beam line in Lanzhou. Nucl Instr Meth A, 2003, 503: 496–503
Guo Z Y, Zhan W L, Xiao G Q, et al. The separation techniques for secondry beams at RIBLL. Acta Phys Sin (Overseas Edition), 1999, 8(1): 21–26
Tanihata I, Kobayashi T, Shimoura S, et al. Radioactive Nuclear Beams. Singapore: World Scientific, 1990. 429
Farid M, Hassanain M A. Density-independent folding analysis of the 6;7Li elastic scattering at intermediate energies. Nucl Phys A, 2000, 678: 39–75
Grasso M, Yoshida S, Sandulescu N, et al. Giant halo and anti-halo in the non-relativistic mean field approach. Nucl Phys A, 2007, 788: 337c–342c
Alkhazov G D, Dobrovolsky A V, Egelhof P, et al. Nuclear matter distributions in the 6He and 8He nuclei from differential cross sections for mall-angle proton elastic scattering at intermedi at energy. Nucl Phys A, 2002, 712: 269–299