Zobrazeno 1 - 10
of 209
pro vyhledávání: '"A. Lefebvre-Schuhl"'
Autor:
F. de Grancey, A. Mercenne, F. de Oliveira Santos, T. Davinson, O. Sorlin, J.C. Angélique, M. Assié, E. Berthoumieux, R. Borcea, A. Buta, I. Celikovic, V. Chudoba, J.M. Daugas, G. Dumitru, M. Fadil, S. Grévy, J. Kiener, A. Lefebvre-Schuhl, N. Michel, J. Mrazek, F. Negoita, J. Okołowicz, D. Pantelica, M.G. Pellegriti, L. Perrot, M. Płoszajczak, G. Randisi, I. Ray, O. Roig, F. Rotaru, M.G. Saint Laurent, N. Smirnova, M. Stanoiu, I. Stefan, C. Stodel, K. Subotic, V. Tatischeff, J.C. Thomas, P. Ujić, R. Wolski
Publikováno v:
Physics Letters B, Vol 758, Iss C, Pp 26-31 (2016)
Intense and purified radioactive beam of post-accelerated 14O was used to study the low-lying states in the unbound 15F nucleus. Exploiting resonant elastic scattering in inverse kinematics with a thick target, the second excited state, a resonance a
Externí odkaz:
https://doaj.org/article/f3ad206937724cd4adca6d5c4f4a4864
Autor:
Riley, J. E., Laird, A. M., de Séréville, N., Parikh, A., Fox, S. P., Hammache, F., Stefan, I., Adsley, P., Assié, M., Bastin, B., Boulay, F., Coc, A., Franchoo, S., Garg, R., Gillespie, S. A., Guimaraes, V., Hamadache, C., Hubbard, N., Kiener, J., Lefebvre-Schuhl, A., Santos, F. de Oliveira, Remadi, A., Perrot, L., Suzuki, D., Verde, G., Tatischeff, V., Williams, M.
Classical novae result from thermonuclear explosions producing several $\gamma$-ray emitters which are prime targets for satellites observing in the MeV range. The early 511 keV gamma-ray emission depends critically on the $^{18}$F(p,$\alpha$)$^{15}$
Externí odkaz:
http://arxiv.org/abs/2011.13222
Autor:
Adsley, P., Hammache, F., de Séréville, N., Alcindor, V., é, M. Assi, Chabot, D. Beaumel M., Degerlier, M., Delafosse, C., Faestermann, T., Flavigny, F., Fox, S. P., Garg, R., Georgiadou, A., Gillespie, S. A., Guillot, J., Hertenberger, R., Guimarães, V., Gottardo, A., Kiener, J., Laird, A. M., Lefebvre-Schuhl, A., Matea, I., Meyer, A., Mahgoub, M., Olivier, L., Perrot, L., Riley, J., Sivacek, I., Stefan, I., Tatischeff, V., Wirth, H. -F.
Publikováno v:
Phys. Rev. C 103, 035804 (2021)
Spatially-correlated overabundances of $^{15}$N and $^{18}$O observed in some low-density graphite meteoritic grains have been connected to nucleosynthesis taking place in the helium-burning shell during core-collapse supernovae. Two of the reactions
Externí odkaz:
http://arxiv.org/abs/2007.03965
Autor:
Meyer, A., de Séréville, N., Laird, A. M., Hammache, F., Longland, R., Lawson, T., Pignatari, M., Audouin, L., Beaumel, D., Fortier, S., Kiener, J., Lefebvre-Schuhl, A., Pellegriti, M. G., Stanoiu, M., Tatischeff, V.
Publikováno v:
Phys. Rev. C 102, 035803 (2020)
It has been suggested that hydrogen ingestion into the helium shell of massive stars could lead to high $^{13}$C and $^{15}$N excesses when the shock of a core-collapse supernova passes through its helium shell. This prediction questions the origin o
Externí odkaz:
http://arxiv.org/abs/2006.13589
Autor:
Adsley, P., Hammache, F., de Séréville, N., Assié, M., Beaumel, D., Chabot, M., Degerlier, M., Delafosse, C., Flavigny, F., Georgiadou, A., Guillot, J., Guimarães, V., Gottardo, A., Matea, I., Olivier, L., Perrot, L., Stefan, I., Laird, A., Fox, S. P., Garg, R., Gillespie, S., Riley, J., Kiener, J., Lefebvre-Schuhl, A., Tatischeff, V., Sivacek, I.
Neutron-capture reactions on $^{18}$F in the helium-burning shell play an important role in the production of $^{15}$N during core-collapse supernovae. The competition between the $^{18}$F($n,p/\alpha$)$^{18}$O/$^{15}$N reactions controls the amount
Externí odkaz:
http://arxiv.org/abs/1809.04357
Autor:
Belhout, A., Ouichaoui, S., Beaumevieille, H., Bouchemha, A., Bogaert, G., Fortier, S., Kiener, J., Lefebvre-Schuhl, A., Maison, J. M., Rosier, L., Rotbard, J., Tatischeff, V., Thibaud, J. P., Vernotte, J.
The angular distributions of $^{8}$Be states in the excitation energy region, E$_{x}$ $\ \sim$($16.5-18.2$) MeV, produced in the $^{7}$Li($^{3}% $He,d)$^{8}$Be proton transfer reaction have been measured at the Orsay 14.8$-$MV tandem accelerator for
Externí odkaz:
http://arxiv.org/abs/1709.05482
Autor:
De Grancey, F., Mercenne, A., Santos, F. de Oliveira, Davinson, T., Sorlin, O., Angélique, J. C., Assié, M., Berthoumieux, E., Borcea, R., Buta, A., Celikovic, I., Chudoba, V., Daugas, J. M., Dumitru, G., Fadil, M., Grévy, S., Kiener, J., Lefebvre-Schuhl, A., Michel, N., Mrazek, J., Negoita, F., Okolowicz, J., Pantelica, D., Pellegriti, M. G., Perrot, L., Ploszajczak, M., Randisi, G., Ray, I., Roig, O., Rotaru, F., Laurent, M. G. Saint, Smirnova, N., Stanoiu, M., Stefan, I., Stodel, C., Subotic, K., Tatischeff, V., Thomas, J. C., Ujic, P., Wolski, R.
Intense and purified radioactive beam of post-accelerated $^{14}$O was used to study the low-lying states in the unbound $^{15}$F nucleus. Exploiting resonant elastic scattering in inverse kinematics with a thick target, the second excited state, a r
Externí odkaz:
http://arxiv.org/abs/1603.00436
Autor:
Stefan, I., Santos, F. de Oliveira, Sorlin, O., Davinson, T., Lewitowicz, M., Dumitru, G., Angélique, J. C., Angélique, M., Berthoumieux, E., Borcea, C., Borcea, R., Buta, A., Daugas, J. M., De Grancey, F., Fadil, M., Grévy, S., Kiener, J., Lefebvre-Schuhl, A., Lenhardt, M., Mrazek, J., Negoita, F., Pantelica, D., Pellegriti, M. G., Perrot, L., Ploszajczak, M., Roig, O., Laurent, M. G. Saint, Ray, I., Stanoiu, M., Stodel, C., Tatischeff, V., Thomas, J. C.
Publikováno v:
Physical Review C 90 (2014) 014307
Radioactive beams of $^{14}$O and $^{15}$O were used to populate the resonant states 1/2$^+$, 5/2$^+$ and $0^-,1^-,2^-$ in the unbound $^{15}$F and $^{16}$F nuclei respectively by means of proton elastic scattering reactions in inverse kinematics. Ba
Externí odkaz:
http://arxiv.org/abs/1406.3610
Autor:
Hammache, F., Coc, A., de Séréville, N., Stefan, I., Roussel, P., Ancelin, S., Assié, M., Audouin, L., Beaumel, D., Franchoo, S., Fernandez-Dominguez, B., Fox, S., Hamadache, C., Kiener, J., Laird, A., Crom, B. Le, Lefebvre-Schuhl, A., Lefebvre, L., Matea, I., Matta, A., Mavilla, G., Mrazek, J., Morfouace, P., Santos, F. de Oliveira, Parikh, A., Perrot, L., Sanchez-Benitez, A. M., Suzuki, D., Tatischeff, V., Ujic, P., Vandebrouck, M.
The observed primordial 7Li abundance in metal-poor halo stars is found to be lower than its Big-Bang nucleosynthesis (BBN) calculated value by a factor of approximately three. Some recent works suggested the possibility that this discrepancy origina
Externí odkaz:
http://arxiv.org/abs/1312.0894
Autor:
Assié, M., Santos, F. de Oliveira, Davinson, T., de Grancey, F., Achouri, L., Alcántara-Núñez, J., Kalanee, T. Al, Angélique, J. -C., Borcea, C., Borcea, R., Caceres, L., Celikovic, I., Chudoba, V., Pang, D. Y., Ducoin, C., Fallot, M., Kamalou, O., Kiener, J., Lam, Y., Lefebvre-Schuhl, A., Lotay, G., Mrazek, J., Perrot, L., Sánchez-Benítez, A. M., Rotaru, F., Saint-Laurent, M-G., Sobolev, Yu., Smirnova, N., Stanoiu, M., Stefan, I., Subotic, K., Ujic, P., Wolski, R., Woods, P. J.
The unbound nucleus $^{18}$Na, the intermediate nucleus in the two-proton radioactivity of $^{19}$Mg, was studied by the measurement of the resonant elastic scattering reaction $^{17}$Ne(p,$^{17}$Ne)p performed at 4 A.MeV. Spectroscopic properties of
Externí odkaz:
http://arxiv.org/abs/1110.1236