Browsing by Author "Aprahamian, A."

Now showing items 1-9 of 9

    • End point of the rp process on accreting neutron stars 

      Schatz, H.; Aprahamian, A.; Bildsten, L.; Cumming, A.; Ouellette, M.; Rauscher, T.; Thielemann, Friedrich-Karl; Wiescher, M. (2001-04-16)
      We calculate the rapid proton (rp) capture process of hydrogen burning on the surface of an accreting neutron star with an updated reaction network that extends up to Xe, far beyond previous work. In both steady-state ...

    • The endpoint of the rp-process 

      Schatz, H.; Aprahamian, A.; Brown, B.A.; Gorres, J.; Herndl, H.; Kratz, K.L.; Moller, P.; Pfeiffer, B.; Rauscher, T.; Rembges, J.F.; Thielemann, F.K.; Wiescher, M.; vanWormer, L. (1997-08-04)

    • The endpoint of the rp-process on accreting neutron stars 

      Schatz, H.; Aprahamian, A.; Bildsten, L.; Cumming, A.; Ouellette, M.; Rauscher, T.; Thielemann, Friedrich-Karl; Wiescher, M. (2001-05-21)
      We find that the rp process in X-ray bursts and in steady state burning, for example in X-ray pulsars, ends in a SnSbTe cycle. We discuss the consequences for the neutron star crust composition an X-ray burst light curves.

    • Measurement of La-139(n, gamma) cross section 

      Terlizzi, R.; Abbondanno, U.; Acrts, G.; Alvarez, H.; Alvarcz-Vclardc, F.; Andriamonjc, S.; Andrzcjcwski, J.; Assimakopoulos, P.; Audouin, L.; Badurek, G.; Baumann, P.; Becvar, F.; Berthoumieux, E.; Calvino, F.; Cano-Ott, D.; Capote, R.; Albornoz, A.C.; Cennini, P.; Chepel, V.; Chiaveri, E.; Colonna, N.; Cortes, G.; Couture, A.; Cox, J.; Dahlfors, M.; David, S.; Dolfini, R.; Domingo-Pardo, C.; Dridi, W.; Duran, R.B.; Eleftheriadis, C.; Embid-Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Fitzpatrick, L.; Frais-Koclbl, H.; Fujii, K.; Furman, W.; Gallino, R.; Gonzalez-Romero, E.; Goverdovski, A.; Gramegna, F.; Griesmayer, E.; Guerrero, C.; Gunsing, F.; Haas, B.; Haight, R.; Heil, M.; Herrera-Martinez, A.; Lgashira, M.; Isaev, S.; Jericha, E.; Kadi, Y.; Kappeler, F.; Karamanis, D.; Karadimos, D.; Kerveno, M.; Ketlerov, V.; Kochler, P.; Kossionides, E.; Krticka, M.; Lamboudis, C.; Leeb, H.; Lindote, A.; Lozano, M.; Lukic, S.; Marganiec, J.; Marques, L.; Marrone, S.; Mastinu, P.; Mengoni, A.; Milazzo, P.M.; Moreau, C.; Mosconi, M.; Neves, F.; Oberhummer, H.; O'Brien, S.; Oshima, M.; Pancin, J.; Papachristodoulou, C.; Papadopoulos, C.; Paradela, C.; Patronis, N.; Pavlik, A.; Pavlopoulos, P.; Perrot, L.; Plag, R.; Plompen, A.; Plukis, A.; Poch, A.; Pretel, C.; Quesada, J.; Rauscher, T.; Reifarth, R.; Rosetti, M.; Rubbia, C.; Rudolf, G.; Rullhusen, P.; Salgado, J.; Sarchiapone, L.; Stephan, C.; Tagliente, G.; Tain, J. L.; Tassan-Got, L.; Tavora, L.; Vannini, G.; Vaz, P.; Ventura, A.; Villamarin, D.; Vincente, M. C.; Vlachoudis, V.; Vlastou, R.; Voss, F.; Walter, S.; Wendler, H.; Wiescher, Michael; Wisshak, K. (American Institute of Physics, 2006)
      We measured the neutron capture cross section of La-139 relative to Au-197 in the energy range of 0.6 cV to 9 keV at n_TOF, the neutron time-of-flight facility at CERN. After a description of the experimental apparatus, ...

    • Neutron capture cross section measurements at n_TOF of Np-237, Pu-240 and Am-243 for the transmutation of nuclear waste 

      Cano-Ott, D.; Abbondanno, U.; Aerts, G.; Alvarez, H.; Alvarez-Velarde, F.; Andriamonje, S.; Andrzejewski, J.; Assimakopoulos, P.; Audouin, L.; Badurek, G.; Baumann, P.; Becvar, F.; Berthoumieux, E.; Calvino, F.; Capote, R.; Carrillo de Albornoz, A.; Cennini, P.; Chepel, V.; Chiaveri, E.; Colonna, N.; Cortes, G.; Couture, A.; Cox, J.; Dahlfors, M.; David, S.; Dillman, R.; Dolfini, R.; Domingo-Pardo, C.; Dridi, W.; Duran, R.B.; Eleftheriadis, C.; Embid-Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Fitzpatrick, L.; Frais-Koelbl, H.; Fujii, K.; Furman, W.; Gallino, R.; Goncalves, I. F.; Gonzalez-Romero, E.; Goverdovski, A.; Gramegna, F.; Griesmayer, E.; Guerrero, C.; Gunsing, F.; Haas, B.; Haight, R.; Rauscher, T.; n TOF Collaborat (American Institute of Physics, 2006)
      Accurate and reliable neutron capture cross section data for actinides are necessary for the proper design, safety regulation and precise performance assessment of transmutation devices such as Fast Critical Reactors or ...

    • Neutron captures and the r-process 

      Farouqi, K.; Kratz, K.L.; Pfeiffer, B.; Rauscher, T.; Thielemann, R.K. (American Institute of Physics (AIP), 2006)
      In order to study possible neutron-capture effects during an r-process, it is necessary to perform fully dynamical simulations. We have performed such calculations within the model of an adiabatically expanding high-entropy ...

    • Radiative capture reactions and alpha-elastic scattering on Cd-106 for the astrophysical p-process 

      Gyurky, Gy.; Elekes, Z.; Kiss, G. G.; Fulop, Zs.; Somorjai, E.; Mate, Z.; Goerres, J.; Palumbo, A.; Wiescher, A.; Lee, H.Y.; Ozkan, N.; Guray, R. T.; Efe, G.; Galaviz, D.; Kretschmer, A.; Sonnabend, K.; Zilges, A.; Rauscher, T. (American Institute of Physics, 2006)
      In the present work both the (alpha,gamma) and (p,gamma) cross sections on the p-nucleus Cd-106 have been measured in the energy range relevant to the astrophysical p-process. The results are compared with the predictions ...

    • rp-process nucleosynthesis at extreme temperature and density conditions 

      Schatz, H.; Aprahamian, A.; Gorres, J.; Wiescher, M.; Rauscher, T.; Rembges, J.F.; Thielemann, F.K.; Pfeiffer, B.; Moller, P.; Kratz, K.L.; Herndl, H.; Brown, B.A.; Rebel, H. (1998-02)
      We present nuclear reaction network calculations to investigate the influence of nuclear structure on the rp-process between Ge and Sn in various scenarios. Due to the lack of experimental data for neutron-deficient nuclei ...

    • An updated library of reaction rates for the astrophysical rp-process. 

      Sakharuk, A.; Elliot, T.; Fisker, J. L.; Hemingray, S.; Kruizenga, A.; Rauscher, T.; Schatz, H.; Smith, K.; Thielemann, Friedrich-Karl; Wiescher, Michael (American Institute of Physics, 2006)
      We are developing an updated library with reaction rates important for the study of the astrophysical rp- process. It includes both experimental and theoretical rates parametrized in terms of the standard REACLIB format. ...