Zobrazeno 1 - 10
of 539
pro vyhledávání: '"Usman, I"'
Autor:
Bahini, A., von Neumann-Cosel, P., Carter, J., Usman, I. T., Arsenyev, N. N., Severyukhin, A. P., Litvinova, E., Fearick, R. W., Neveling, R., Adsley, P., Botha, N., Brümmer, J. W., Donaldson, L. M., Jongile, S., Khumalo, T. C., Latif, M. B., Li, K. C. W., Mabika, P. Z., Molema, P. T., Moodley, C. S., Olorunfunmi, S. D., Papka, P., Pellegri, L., Rebeiro, B., Sideras-Haddad, E., Smit, F. D., Triambak, S., van Zyl, J. J., Wiedeking, M.
Over the past two decades high energy-resolution inelastic proton scattering studies were used to gain an understanding of the origin of fine structure observed in the isoscalar giant quadrupole resonance (ISGQR) and the isovector giant dipole resona
Externí odkaz:
http://arxiv.org/abs/2309.04016
Autor:
Bahini, A., Neveling, R., von Neumann-Cosel, P., Carter, J., Usman, I. T., Adsley, P., Botha, N., Brümmer, J. W., Donaldson, L. M., Jongile, S., Khumalo, T. C., Latif, M. B., Li, K. C. W., Mabika, P. Z., Molema, P. T., Moodley, C. S., Olorunfunmi, S. D., Papka, P., Pellegri, L., Rebeiro, B., Sideras-Haddad, E., Smit, F. D., Triambak, S., Wiedeking, M., van Zyl, J. J.
Inelastic $\alpha$-particle scattering at energies of a few hundred MeV and very-forward scattering angles including $0^\circ$ has been established as a tool for the study of the isoscalar giant monopole (IS0) strength distributions in nuclei. An ind
Externí odkaz:
http://arxiv.org/abs/2212.00327
Autor:
Carter, J., Donaldson, L. M., Fujita, H., Fujita, Y., Jingo, M., Kureba, C. O., Latif, M. B., Litvinova, E., Nemulodi, F., von Neumann-Cosel, P., Neveling, R., Papakonstantinou, P., Papka, P., Pellegri, L., Ponomarev, V. Yu., Richter, A., Roth, R., Sideras-Haddad, E., Smit, F. D., Swartz, J. A., Tamii, A., Trippel, R., Usman, I. T., Wibowo, H.
The fine structure of the IsoVector Giant Dipole Resonance (IVGDR) in the doubly-magic nuclei $^{40,48}$Ca observed in inelastic proton scattering experiments under $0^\circ$ is used to investigate the role of different mechanisms contributing to the
Externí odkaz:
http://arxiv.org/abs/2204.12170
Autor:
Olorunfunmi, S. D., Neveling, R., Carter, J., von Neumann-Cosel, P., Usman, I. T., Adsley, P., Bahini, A., Baloyi, L. P. L., Brümmer, J. W., Donaldson, L. M., Jivan, H., Kheswa, N. Y., Li, K. C. W., Marín-Lámbarri, D. J., Molema, P. T., Moodley, C. S., O'Neill, G. G., Papka, P., Pellegri, L., Pesudo, V., Sideras-Haddad, E., Smit, F. D., Steyn, G. F., Aava, A. A., Diel, F., Dunkel, F., Jones, P., Karayonchev, V.
Two recent studies of the evolution of the isoscalar giant monopole resonance (ISGMR) within the calcium isotope chain report conflicting results. One study suggests that the monopole resonance energy, and thus the incompressibility of the nucleus $K
Externí odkaz:
http://arxiv.org/abs/2202.00722
Autor:
Li, K. C. W., Smit, F. D., Adsley, P., Neveling, R., Papka, P., Nikolskii, E., Brümmer, J. W., Donaldson, L. M., Freer, M., Harakeh, M. N., Nemulodi, F., Pellegri, L., Pesudo, V., Wiedeking, M., Buthelezi, E. Z., Chudoba, V., Förtsch, S. V., Jones, P., Kamil, M., Mira, J. P., O'Neill, G. G., Sideras-Haddad, E., Singh, B., Siem, S., Steyn, G. F., Swartz, J. A., Usman, I. T., van Zyl, J. J.
Knowledge of the low-lying monopole strength in $\mathrm{^{12}C}$ $-$ the Hoyle state in particular $-$ is crucial for our understanding of both the astrophysically important $3\alpha$ reaction and of $\alpha$-particle clustering. Multiple theoretica
Externí odkaz:
http://arxiv.org/abs/2201.10396
Autor:
Bahini, A., Nesterenko, V. O., Usman, I. T., von Neumann-Cosel, P., Neveling, R., Carter, J., Kvasil, J., Repko, A., Adsley, P., Botha, N., Brummer, J. W., Donaldson, L. M., Jongile, S., Khumalo, T. C., Latif, M. B., Li, K. C. W., Mabika, P. Z., Molema, P. T., Moodley, C. S., Olorunfunmi, S. D., Papka, P., Pellegri, L., Rebeiro, B., Sideras-Haddad, E., Smit, F. D., Triambak, S., van Zyl, J. J.
Background: In highly deformed nuclei, there is a noticeable coupling of the Isoscalar Giant Monopole Resonance (ISGMR) and the $K = 0$ component of the Isoscalar Giant Quadrupole Resonance (ISGQR), which results in a double peak structure of the iso
Externí odkaz:
http://arxiv.org/abs/2111.07105
Autor:
Li, K. C. W., Smit, F. D., Adsley, P., Neveling, R., Papka, P., Nikolskii, E., Brümmer, J. W., Donaldson, L. M., Freer, M., Harakeh, M. N., Nemulodi, F., Pellegri, L., Pesudo, V., Wiedeking, M., Buthelezi, E. Z., Chudoba, V., Förtsch, S. V., Jones, P., Kamil, M., Mira, J. P., O'Neill, G. G., Sideras-Haddad, E., Singh, B., Steyn, G. F., Swartz, J. A., Usman, I. T., van Zyl, J. J.
Knowledge of the low-lying monopole strength in $\mathrm{^{12}C}$, the Hoyle state in particular, is crucial for our understanding of both the astrophysically important $3\alpha$ reaction and of $\alpha$-particle clustering. The $\mathrm{^{12}C}(\alp
Externí odkaz:
http://arxiv.org/abs/2011.10112
Autor:
Donaldson, L. M., Carter, J., von Neumann-Cosel, P., Nesterenko, V. O., Neveling, R., Reinhard, P. -G., Usman, I. T., Adsley, P., Bertulani, C. A., Brümmer, J. W., Buthelezi, E. Z., Cooper, G. R. J., Fearick, R. W., Förtsch, S. V., Fujita, H., Fujita, Y., Jingo, M., Kheswa, N. Y., Kleinig, W., Kureba, C. O., Kvasil, J., Latif, M., Li, K. C. W., Mira, J. P., Nemulodi, F., Papka, P., Pellegri, L., Pietralla, N., Ponomarev, V. Yu., Rebeiro, B., Richter, A., Shirikova, N. Yu., Sideras-Haddad, E., Sushkov, A. V., Smit, F. D., Steyn, G. F., Swartz, J. A., Tamii, A.
Publikováno v:
Phys. Rev. C 102, 064327 (2020)
Background: Inelastic proton scattering at energies of a few hundred MeV and very-forward angles including $0^\circ$ has been established as a tool to study electric-dipole strength distributions in nuclei. The present work reports a systematic inves
Externí odkaz:
http://arxiv.org/abs/2010.01210
Autor:
Olorunfunmi, S. D., Usman, I. T., Carter, J., Molema, P. T., Sideras-Haddad, E., Neveling, R., Smit, F. D., Adsley, P., Donaldson, L. M., Pellegri, L., Steyn, G. F., von Neumann-Cosel, P., Pietralla, N., Arsenyev, N. N., Papka, P., Li, K. C. W., Brümmer, J. W., ONeill, G. G., Pesudo, V., Marín-Lámbarri, D. J., Fujita, H., Tamii, A.
Experiments investigating the fine structure of the IsoScalar Giant Monopole Resonance (ISGMR) of 48Ca were carried out with a 200 MeV alpha inelastic-scattering reaction, using the high energy-resolution capability and the zero-degree setup at the K
Externí odkaz:
http://arxiv.org/abs/2007.08984
Autor:
Jingo, M., Buthelezi, E. Z., Carter, J., Cooper, G. R. J., Fearick, R. W., Förtsch, S. V., Kureba, C. O., Krumbholz, A. M., von Neumann-Cosel, P., Neveling, R., Papka, P., Poltoratska, I., Ponomarev, V. Yu., Richter, A., Sideras-Haddad, E., Smit, F. D., Swartz, J. A., Tamii, A., Usman, I. T.
Publikováno v:
Eur. Phys. J. A 54, 234 (2018)
A survey of the fine structure of the Isovector Giant Dipole Resonance (IVGDR) was performed, using the recently commissioned zero-degree facility of the K600 magnetic spectrometer at iThemba LABS. Inelastic proton scattering at an incident energy of
Externí odkaz:
http://arxiv.org/abs/1808.02282