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Browsing by Author "Gyuerky, Gy."
Now showing items 1-13 of 13
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(70)Ge(p,gamma)(71)As and (76)Ge(p,n)(76)As cross sections for the astrophysical p process : Sensitivity of the optical proton potential at low energies
Kiss, G. G.; Gyuerky, Gy.; Elekes, Z.; Fueloep, Zs.; Somorjai, E.; Rauscher, T. (2007-11)The cross sections of the (70)Ge(p,gamma)(71)As and (76)Ge(p,n)(76)As reactions have been measured with the activation method in the Gamow window for the astrophysical p process. The experiments were carried out at the Van ... -
The (85)Rb(p,n)(85)Sr reaction and the modified proton optical potential
Kiss, G. G.; Gyuerky, Gy.; Simon, A.; Fueloep, Zs.; Somorjai, E.; Rauscher, T. (American Institute of Physics (AIP), 2009)The cross sections of the astrophysically relevant (85)Rb(p,n)(85)Sr(g,m) reaction have been measured between E(c.m). = 2.16 and 3.96 MeV. The cross sections have been derived by measuring the gamma radiation following the ... -
Activation method combined with characteristic X-ray counting : A possibility to measure (alpha, gamma) cross sections on heavy p-nuclei
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 ... -
Alpha-induced reaction cross section measurements on Eu-151 for the astrophysical gamma-process
Gyuerky, Gy.; Elekes, Z.; Farkas, J.; Fueloep, Zs.; Halasz, Z.; Kiss, G. G.; Somorjai, E.; Szuecs, T.; Guray, R. T.; Ozkan, N.; Yalcin, C.; Rauscher, T. (2010-11)In order to extend the experimental database relevant for the astrophysical gamma-process towards the unexplored heavier mass region, the cross sections of the Eu-151(alpha, gamma)Tb-155 and Eu-151 (alpha, n)Tb-154 reactions ... -
Astrophysical analysis of the measurement of (alpha,gamma) and (alpha,n) cross sections of Tm-169
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 -
Astrophysical S-factor for alpha-Capture of (113)In in the p-Process Energy Range
Yalcin, C.; Gueray, R. T.; Oezkan, N.; Kutlu, S.; Gyuerky, Gy.; Farkas, J.; Kiss, G. G.; Fueloep, Zs.; Rauscher, T.; Somorjai, E. (American Institute of Physics (AIP), 2009)The cross sections of (113)In(alpha, gamma)(117)Sb and (113)In(alpha,n)(116)Sb reactions have been measured using the activation method. The experiments were carried out at the ATOMKI cyclotron accelerator in the center ... -
Determining reaction cross sections via characteristic X-ray detection : alpha-induced reactions on Tm-169 for the astrophysical gamma-process
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 ... -
How important is the Family? : Alpha nuclear potentials and p-process nucleosynthesis
Ornelas, A.; Galaviz, D.; Fueloep, Zs.; Gyuerky, Gy.; Kiss, G. G.; Mate, Zs.; Mohr, P.; Rauscher, T.; Somorjai, E.; Sonnabend, K.; Zilges, A. (SISSA, 2011-01)In this work we present the results from the analysis of the experimentally measured angular distributions of the reaction 106Cd(α , α )106 Cd at several different energies around the Coulomb barrier. The difficulties that ... -
Investigation of alpha-induced reactions on Ba-130 and Ba-132 and their importance for the synthesis of heavy p nuclei
Halasz, Z.; Gyuerky, Gy.; Farkas, Judit; Fueloep, Zs.; Szuecs, T.; Somorjai, E.; Rauscher, T. (2012-02-17)Captures of a particles on the proton-richest barium isotope, Ba-130, have been studied in order to provide cross-section data for the modeling of the astrophysical gamma process. The cross sections of the Ba-130(alpha,g ... -
Investigation of alpha-induced reactions on I-127 for the astrophysical gamma process
Kiss, G. G.; Szuecs, T.; Toeroek, Zs.; Korkulu, Z.; Gyuerky, Gy.; Halasz, Z.; Fueloep, Zs.; Somorjai, E.; Rauscher, T. (2012-09-04)Background: The. process in core-collapse supernova explosions is thought to explain the origin of proton-rich isotopes between Se and Hg, the so-called p nuclei. The majority of the reaction rates for gamma process reaction ... -
Investigation of alpha-nuclear potential families from elastic scattering experiments
Ornelas, A.; Galaviz, D.; Fueloep, Zs.; Gyuerky, Gy.; Kiss, G.; Mate, Z.; Mohr, P.; Rauscher, T.; Somorjai, E.; Sonnabend, K.; Zilges, A. (IOP Publishing Ltd., 2012)In this work we present the continuation of the reported analysis [1] of the experimentally measured angular distributions of the reaction Cd-106(alpha, alpha)Cd-106 at several different energies around the Coulomb barrier. ... -
Investigation of proton-induced reactions on Germanium isotopes
Kiss, G. G.; Gyuerky, Gy.; Elekes, Z.; Fueloep, Zs.; Somorjai, E.; Rauscher, T.; Wiescher, M. (2008-01)The cross sections of the (70)Ge(p,gamma)(71)As and (76)Ge(p, n)(76)As reactions have been measured in the energy range relevant for the astrophysical p-process (1.6-4.4 MeV). The proton beam was provided by the Van de ... -
Suppression of the stellar enhancement factor and the reaction Rb-85(p, n)Sr-85
Rauscher, T.; Kiss, G. G.; Gyuerky, Gy.; Simon, A.; Fueloep, Zs.; Somorjai, E. (2009-09)It is shown that a Coulomb suppression of the stellar enhancement factor occurs in many endothermic reactions at and far from stability. Contrary to common assumptions, reaction measurements for astrophysics with minimal ...