Murat Aygün
2.474 425


The quasielastic scattering angular distribution of the 14Be projectile scattered from the 12C target nucleus at incident energy of 796 MeV is analyzed by using the double folding model. In this context, the eight different density distributions of 14Be are used to obtain the real part of the optical potential. The imaginary potentials of all the density distributions are taken as Woods-Saxon type. The theoretical results obtained for each density distribution are compared with each other as well as the experimental data. Then, the theoretical results of the GO-2n density distribution giving good results in all the density distributions are compared with the results of previous works. These comparisons provide information about the similarities and differences of the density distributions used in the theoretical analysis.


Optical model, Double folding model, Elastic scattering

Full Text:




Tanihata, I., Hamagaki, H., Hashimoto, O., Shida, Y., Yoshikawa, N., Sugimoto, K., Yamakawa, O., Kobayashi, T., Takahashi, N., “Measurements of interaction cross sections and nuclear radii in the light p-shell region”, Phys. Rev. Lett., 55: 2676 (1985).

Hansen, P.G. and Jonson, B., “The neutron halo of extremely neutron-rich nuclei”, Europhys. Lett., 4: 409 (1987).

Zhukov, M.V., Danilin, B.V., Fedorov, D.V., Bang, J.M., Thompson, I.J., Vaagen, J.S., “Bound state properties of Borromean halo nuclei: 6He and 11Li”, Phys. Rep., 231:151-199 (1993).

Thompson, I.J. and Zhukov, M.V., “Structure and reactions of the 12,14Be nuclei”, Phys. Rev. C, 53: 708 (1996).

Tanihata, I., “Nuclear radii and change in shell structure: A halo driven new magic number N=16”, Nucl. Phys. A, 682: 114-123 (2001).

Jonson, B., “Light dripline nuclei”, Phys. Rep., 389: 1-59 (2004).

Tanihata, I., Kobayashi, T., Yamakawa, O., Shimoura, S., Ekuni, K., Sugimoto, K., Takahashi, N., Shimoda, T., Sato, H., “Measurement of interaction cross sections using isotope beams of Be and B and isospin dependence of the nuclear radii”, Phys. Lett. B, 206: 592-596 (1988).

Tanihata, I., “Neutron halo nuclei”, J. Phys. G. Nucl. Part. Phys., 22: 157 (1996).

Hansen, P.G., Jensen, A.S., Jonson, B., “Nuclear halos”, Ann. Rev. Nucl. Part. Sci., 45: 591-634 (1995).

Ye, Y.L., Pang, D.Y., Zhang, G.L., et al., “Study of the halo nucleus 6He through the direct nuclear reactions”, J. Phys. G. Nucl. Part. Phys., 31: S1647-S1653 (2005).

Aygun, M., Boztosun, I., Rusek, K., “Parametrized form of the dynamic polarization potential for the 6He + 208Pb interaction”, Mod. Phys. Lett. A, 28: 1350112 (2013).

Aygun, M. and Boztosun, I., “An extended analysis of the elastic scattering of 6Li(6He, 6He)6Li system at 17.9 MeV”, Few-Body Syst., 55: 203-209 (2014).

Aygun, M., Boztosun, I., Sahin, Y., “A study on the fresnel diffraction of 6He by means of different microscopic density distributions”, Phys. At. Nuc., 75: 963-968 (2012).

Aygun, M., “A theoretical study on 120Sn(6He, 6He)120Sn elastic scattering”, Ann. Nucl. Energy, 51: 1-4 (2013).

Aygun, M., Kucuk, Y., Boztosun, I., Ibraheem, A.A., “Microscopic few-body and gaussian-shaped density distributions for the analysis of the 6He exotic nucleus with different target nuclei”, Nucl. Phys. A, 848: 245-259 (2010).

Sugimoto, T., Nakamura, T., Kondo, Y., et al., “The first 2+ state of 14Be” Phys. Lett. B, 654: 160-164 (2007).

Suzuki, T., Kanungo, R., Bochkarev, O., et al., “Nuclear radii of 17,19B and 14Be”, Nucl. Phys. A, 658: 313-326 (1999).

Ozawa, A., Cai, Y.Z., Chen, Z.Q., et al., “Measurements of the interaction cross-sections for 14Be and 14,15B as projectiles with a new scheme at RIBLL”, Nucl. Instr. and Meth. B, 247: 155-160 (2006).

Labiche, M., Orr, N.A., Marqués, F.M., et al., “Halo Structure of 14Be”, Phys. Rev. Lett., 86: 600 (2001).

Al-Khalili, J.S., Tostevin, J.A., Thompson, I.J., “Radii of halo nuclei from cross section measurements”, Phys. Rev. C, 54: 1843 (1996).

Aksyutina, Yu., Aumann, T., Boretzky, K., et al., “Study of the 14Be continuum: identification and structure of its second 2+ state”, Phys. Rev. Lett., 111: 242501 (2013).

Tarutina, T., Thompson, I.J., Tostevin, J.A., “Study of 14Be with core excitation”, Nucl. Phys. A, 733: 53-66 (2004).

Ozawa, A., Suzuki, T., Tanihata, I., “Nuclear size and related topics”, Nucl. Phys. A, 693: 32-62 (2001).

Tanihata, I., Savajols, H., Kanungo, R., “Recent experimental progress in nuclear halo structure studies”, Prog. Part. Nucl. Phys., 68: 215-313 (2013).

Alkhazov, G.D., Sarantsev, V.V., “Sensitivity of cross sections for elastic nucleus-nucleus scattering to halo nucleus density distributions”, Phys. At. Nucl., 75: 1544-1549 (2012).

Bush, M.P., Al-Khalili, J.S., Tostevin, J.A., et al., “Sensitivity of reaction cross sections to halo nucleus density distributions”, Phys. Rev. C, 53: 3009 (1996).

Ilieva, S., Aksouh, F., Alkhazov, G.D., et al., “Nuclear-matter density distribution in the neutron-rich nuclei 12,14Be from proton elastic scattering in inverse kinematics”, Nucl. Phys. A, 875: 8-28 (2012).

Zahar, M., Belbot, M., Kolata, J.J., et al., “Quasielastic scattering of 12,14Be on 12C”, Phys. Rev. C, 49: 1540 (1994).

Mermaz, M.C., “Optical model analysis of 12Be and 14Be quasielastic scattering on a 12C target at 56 MeV per nucleon”, Phys. Rev. C, 50: 2620 (1994).

Satchler, G.R. and Love, W.G., “Folding model potentials from realistic interactions for heavy-ion scattering”, Phys. Rep., 55: 183-254 (1979).

Alkhazov, G.D., Dobrovolsky, A.V., Lobodenko, A.A., “Experimental studies of the nuclear spatial structure of neutron-rich He and Liisotopes”, Phys. At. Nucl., 69: 1124-1131 (2006).

El-Azab Farid, M. and Hassanian, M.A., “Density-independent folding analysis of the 6,7Li elastic scattering at intermediate energies”, Nucl. Phys. A, 678: 39-75 (2000).

Karakoc, M. and Boztosun, I., “- double folding cluster potential description of the 12C + 24Mg system”, Phys. Rev. C, 73: 047601 (2006).

Bertsch G., Borysowicz, J., McManus, H., Love, W.G., “Interactions for inelastic scattering derived form realistic potentials”, Nucl. Phys. A, 284: 399-419 (1977).

Thompson, I.J., “Coupled reaction channels calculations in nuclear physics”, Computer Phys. Rep., 7: 167-212 (1988).

Ilieva, S., “Investigation of the nuclear-matter density distributions of the exotic 12Be, 14Be and 8B nuclei by elastic proton scattering in inverse kinematics”, PhD thesis, Johannes Gutenberg-Universität in Mainz, 2008.

Alkhazov, G.D., Dobrovolsky, A.V., Egelhof, P., et al., “Nuclear matter distributions in the 6He and 8He nuclei from differential cross sections for small-angle proton elastic scattering at intermediate energy”, Nucl. Phys. A, 712: 269-299 (2002).

Warner, R.E., Patty, R.A., Voyles, P.M., et al., “Total reaction and 2n-removal cross sections of 20-60A MeV 4,6,8He, 6-9,11Li, and 10Be on Si”, Phys. Rev. C., 54: 1700 (1996).

Chaudhur, A.K., “Density distribution of 11Li and proton elastic scattering from 9Li and 11Li”, Phys. Rev. C, 49: 1603 (1994).

Rego, R.A., “Closed-form expressions for cross sections of exotic nuclei”, Nucl. Phys. A, 581: 119-130 (1995).