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Browsing by Subject "NUCLEOSYNTHESIS"

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  • Kiss, G. G.; Szuecs, T.; Gyuerky, Gy.; Fueloep, Zs.; Farkas, J.; Kertesz, Zs.; Somorjai, E.; Laubenstein, M.; Froehlich, C.; Rauscher, T. (2011-10-01)
    For an improved modeling of the astrophysical nucleosynthesis of p-nuclei, low energy cross section data of alpha-induced reactions on heavy isotopes are needed. Technical difficulties hamper the experimental determination ...
  • Rapp, W.; Heil, M.; Hentschel, D.; Kappeler, F.; Reifarth, R.; Brede, H.J.; Klein, H.; Rauscher, T. (2002-07)
    The uncertain origin of the proton rich Mo and Ru isotopes has motivated cross-section measurements of alpha- and neutron-induced reactions. The experiments were performed via the activation technique by irradiating thin ...
  • Gyurky, Gy.; Kiss, G. G.; Elekes, Z.; Fulop, Zs.; Somorjai, E.; Palumbo, A.; Gorres, J.; Lee, H. Y.; Rapp, W.; Wiescher, M.; Ozkan, N.; Guray, R. T.; Efe, G.; Rauscher, T. (2006-08)
    The Cd-106(alpha,gamma)Sn-110 reaction cross section has been measured in the energy range of the Gamow window for the astrophysical p-process scenario. The cross sections for Cd-106(alpha,n)Sn-109 and for Cd-106(alpha,p)In-109 ...
  • Gyuerky, G. Y.; Elekes, Z.; Farkas, J.; Fueloep, Z. S.; Kiss, G. G.; Somorjai, E.; Szuecs, T.; Guray, R. T.; Ozkan, N.; Yalcin, C.; Rauscher, T. (IOP PUBLISHING LTD, 2010)
    The cross sections of (151)Eu(alpha, gamma)(155)Tb and (151)Eu(alpha,n)(154)Tb reactions have been measured with the activation method. Some aspects of the measurement are presented here to illustrate the requirements of ...
  • Rembges, F.; Freiburghaus, C.; Rauscher, T.; Thielemann, F.K.; Schatz, H.; Wiescher, M. (1997-07-20)
    Hot (explosive) hydrogen burning, or the rapid proton capture process (rp-process), occurs in a number of astrophysical environments. Novae and X-ray bursts are the most prominent ones, but accretion disks around black ...
  • Rauscher, T.; Kiss, G. G.; Szuecs, T.; Fueloep, Zs.; Froehlich, Carla; Gyuerky, Gy.; Halasz, Z.; Kertesz, Zs.; Somorjai, E. (2012-07-05)
    Reaction cross sections of Tm-169(alpha, gamma)Lu-173 and Tm-169(alpha, n)Lu-172 have been measured in the energy range 12.6
  • Thielemann, F.K.; Kratz, K.L.; Pfeiffer, B.; Rauscher, T.; van Wormer, L.; Wiescher, M. (1994-03)
    We discuss unstable nuclei on the proton-rich and neutron rich side of stability and their properties of astrophysical relevance. The Coulomb barriers in charged-particle captures lead to a cycle pattern which is not ...
  • Lederer, C.; Colonna, N.; Domingo-Pardo, C.; Gunsing, F.; Kaeppeler, F.; Massimi, C.; Mengoni, A.; Wallner, A.; Abbondanno, U.; Aerts, G.; Alvarez, H.; Alvarez-Velarde, F.; Andriamonje, S.; Andrzejewski, J.; Assimakopoulos, P.; Audouin, L.; Badurek, G.; Barbagallo, M.; Baumann, P.; Becvar, F.; Belloni, F.; Berthoumieux, E.; Calviani, M.; Calvino, F.; Cano-Ott, D.; Capote, R.; Carrapico, C.; Carrillo de Albornoz, A.; Cennini, P.; Chepel, V.; Chiaveri, E.; Cortes, G.; Couture, A.; Cox, J.; Dahlfors, M.; David, S.; Dillmann, I.; Dolfini, R.; Dridi, W.; Duran, I.; Eleftheriadis, C.; Embid-Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Fitzpatrick, L.; Frais-Koelbl, H.; Fujii, K.; Furman, W.; Rauscher, T.; n TOF Collaboration (2011-03-17)
    The cross section of the reaction Au-197(n,gamma) was measured with the time-of-flight technique at the n_TOF (neutron time-of-flight) facility in the unresolved resonance region between 5 and 400 keV using a pair of C6D6 ...
  • Rauscher, T. (2006-01)
    The location of the (gamma,p)/(gamma,n) and (gamma,alpha)/(gamma,n) line at gamma process temperatures is discussed, using updated reaction rates based on global Hauser-Feshbach calculations. The results can be directly ...
  • Fujii, K.; Mosconi, M.; Milazzo, P. M.; Domingo-Pardo, C.; Kaeppeler, F.; Mengoni, A.; 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.; Calviani, M.; Cano-Ott, D.; Capote, R.; Carrapico, C.; Cennini, P.; Chepel, V.; Chiaveri, E.; Colonna, N.; Cortes, G.; Couture, A.; Cox, J.; Dahlfors, M.; David, S.; Dillmann, I.; Dridi, W.; Duran, I.; Eleftheriadis, C.; Embid-Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Furman, W.; Goncalves, I.; Gonzalez-Romero, E.; Gramegna, F.; Guerrero, C.; Gunsing, F.; Haas, B.; Haight, R.; Heil, M.; Rauscher, T.; n TOF Collaboration (EDP Sciences, 2008)
    The neutron capture cross sections of (186,187,188)Os have been measured at the CERN neutron time-of-flight facility, n_TOF, in the neutron energy range from 1 eV up to 1 MeV. In this contribution, we report the results ...
  • Rauscher, T.; Thielemann, Friedrich-Karl; Gorres, J.; Wiescher, M. (2000-08-14)
    The reaction rates for ct capture processes on self-conjugate nuclei in the mass range A = 20-40 have been investigated. The rates were calculated using the statistical model code NON-SMOKER taking into account isospin ...
  • Kobayashi, Chiaki; Tominaga, Nozomu; Nomoto, Ken'ichi (2011-04-01)
    We show that the recently observed elemental abundance pattern of the carbon-rich metal-poor damped Ly alpha (DLA) system is in excellent agreement with the nucleosynthesis yields of faint core-collapse supernovae of ...
  • Sonnabend, K.; Mengoni, A.; Mohr, P.; Rauscher, T.; Vogt, K.; Zilges, A. (2003-05-19)
    We present our method to determine the (n,gamma) reaction rates of s-process branching point nuclei using data of the inverse (gamma,n) reaction. As an example, we selected Zr-95. The analysis of the data of the reaction ...
  • Kiss, G. G.; Rauscher, T.; Szuecs, T.; Kertesz, Zs.; Fueloep, Zs.; Gyuerky, Gy.; Froehlich, C.; Farkas, J.; Elekes, Z.; Somorjai, E. (2011-01-17)
    The cross sections of the Tm-169(alpha, gamma)Lu-173 and Tm-169(alpha,n)Lu-172 reactions have been measured first time using a new method, by detecting the characteristic X-ray radiation following the electron capture-decay ...
  • Rauscher, T.; Guber, K. H. (2002-08)
    Direct neutron capture on Ni-62 is calculated in the DWBA and the Maxwellian averaged cross sections and astrophysical reaction rates in the energy range relevant for s-process nucleosynthesis are given. It is confirmed ...
  • Galaviz, D.; Fulop, Zs.; Gyurky, Gy.; Mate, Z.; Mohr, P.; Rauscher, T.; Somorjai, E.; Zilges, A. (2005-06)
    The cross sections for the elastic scattering reactions Sn-112,Sn-124(alpha,alpha)Sn-112,Sn-124 at energies above and below the Coulomb barrier are presented and compared to predictions for global alpha-nucleus potentials. ...
  • 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 ...
  • Dillmann, I.; Heil, M.; Kappeler, F.; Rauscher, T.; Thielemann, Friedrich-Karl (2006-01)
    The nucleosynthesis of elements beyond iron is dominated by the s and r processes. However, a small amount of stable isotopes on the proton-rich side cannot be made by neutron capture and are thought to be produced by ...
  • Tagliente, G.; Milazzo, P. M.; Fujii, K.; Aerts, G.; Abbondanno, U.; Alvarez, H.; Alvarez-Velarde, F.; Andriamonje, S.; Andrzejewski, J.; Assimakopoulos, P.; Audouin, L.; Badurek, G.; Baumann, P.; Becvar, F.; Belloni, F.; Berthoumieux, E.; Calvino, F.; Calviani, M.; Cano-Ott, D.; Capote, R.; Carrapico, C.; Cennini, P.; Chepel, V.; Colonna, N.; Cortes, G.; Couture, A.; Cox, J.; Dahlfors, M.; David, S.; Dillmann, I.; Domingo-Pardo, C.; Dridi, W.; Duran, I.; Eleftheriadis, C.; Embid-Segura, M.; Ferrant, L.; Ferrari, A.; Ferreira-Marques, R.; Furman, W.; Goncalves, I.; Gonzalez-Romero, E.; Gramegna, F.; Guerrero, C.; Gunsing, F.; Haas, B.; Haight, R.; Heil, M.; Herrera-Martinez, A.; Igashira, M.; Jericha, E.; Kaeppeler, F.; Kadi, Y.; Karadimos, D.; Karamanis, D.; Kerveno, M.; Koehler, P.; Kossionides, E.; Krticka, M.; Lamboudis, C.; Leeb, H.; Lindote, A.; Lopes, I.; Lozano, M.; Lukic, S.; Marganiec, J.; Marrone, S.; Martinez, T.; Massimi, C.; Mastinu, P.; Mengoni, A.; Moreau, C.; Mosconi, M.; Neves, F.; Oberhummer, H.; O'Brien, S.; Pancin, J.; Papachristodoulou, C.; Papadopoulos, C.; Paradela, C.; Patronis, N.; Pavlik, A.; Pavlopoulos, P.; Perrot, L.; Pigni, M. T.; Plag, R.; Plompen, A.; Plukis, A.; Poch, A.; Praena-Rodriguez, J.; Pretel, C.; Quesada, J.; Rauscher, T.; Reifarth, R.; Rubbia, C.; Rudolf, G.; Rullhusen, P.; Salgado, J.; Santos, C.; Sarchiapone, L.; Savvidis, I.; Stephan, C.; Tain, J. L.; Tassan-Got, L.; Tavora, L.; Terlizzi, R.; Vannini, G.; Vaz, P.; Ventura, A.; Villamarin, D.; Vincente, M. C.; Vlachoudis, V.; Vlastou, R.; Voss, F.; Walter, S.; Wiescher, M.; Wisshak, K. (2008-10)
    The neutron capture cross sections of the Zr isotopes are relevant to studies in nuclear structure, nuclear astrophysics, and nuclear technology. The valence neutron of (91)Zr with respect to the neutron magic nucleus ...
  • Sorlin, O.; Borrel, V.; Grevy, S.; Guillemaud-Mueller, D.; Mueller, A.C.; Pougheon, F.; Bohmer, W.; Kratz, K.L.; Mehren, T.; Moller, P.; Pfeiffer, B.; Rauscher, T.; Saint-Laurent, M.G.; Anne, R.; Lewitowicz, M.; Ostrowski, A.; Dorfler, T.; Schmidt-Ott, W.D. (1998-03-16)
    The neutron-rich isotopes Sc53-55 and V56-59 have been produced at GANIL in interactions of a 64.5 MeV/u Cu-65 beam with a Be-9 target. They were separated by the doubly achromatic spectrometer LISE3. Beta-decay half-lives ...

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