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New reaction rate for 16O(p,gamma)17F and its influence on the oxygen isotopic ratios in massive AGB stars
C. Iliadis, C. Angulo, P. Descouvemont +2
The 16O(p,gamma)17F reaction rate is revisited with special emphasis on the stellar temperature range of T=60-100 MK important for hot bottom burning in asymptotic giant branch (AG…
Survival of Nature's Rarest Isotope 180Ta under Stellar Conditions
P. Mohr, F. Kaeppeler, R. Gallino
The nucleosynthesis of nature's rarest isotope 180Ta depends sensitively on the temperature of the astrophysical environment because of depopulation of the long-living isomeric sta…
Low-Energy Direct Capture in the 16O(alpha,gamma)20Ne Reaction
P. Mohr
The cross section of the 16O(a,g)20Ne capture reaction is analyzed at low energies where the direct capture mechanism is dominant. For temperatures below T9 = 0.2 the resulting ast…
Relation between the 16O(alpha,gamma)20Ne reaction and its reverse 20Ne(gamma,alpha)16O reaction in stars and in the laboratory
P. Mohr, C. Angulo, P. Descouvemont +1
The astrophysical reaction rates of the 16O(a,g)20Ne capture reaction and its inverse 20Ne(g,a)16O photodisintegration reaction are given by the sum of several narrow resonances an…
Elastic alpha-scattering of 112Sn and 124Sn at astrophysically relevant energies
D. Galaviz, Zs. Fulop, Gy. Gyurky +5
The cross sections for the elastic scattering reactions {112,124}Sn(a,a){112,124}Sn at energies above and below the Coulomb barrier are presented and compared to predictions for gl…
s-process branching at 185W revised
P. Mohr, T. Shizuma, H. Ueda +7
The neutron capture cross section of the unstable s-process branching nucleus 185W has been derived from experimental data of the inverse 186W(g,n)185W photodisintegration taken wi…
The (n,g) cross sections of short-living s-process branching points
K. Sonnabend, A. Mengoni, P. Mohr +3
An experimental method to determine the (n,g) cross section of short-living s-process branching points using data of the inverse (g,n) reaction is presented. The method was used to…
Properties of Be and C deduced from the folding--potential model
P. Mohr, H. Abele, V. Kölle +3
The -- differential cross sections are analyzed in the optical model using a double--folded potential. With the knowledge of this potential bound and resonance--state propert…
Alpha Clustering and the stellar nucleosynthesis of carbon
H. Oberhummer, H. Krauss, K. Grün +4
The astrophysical S--factor and reaction rates for the triple--alpha process are calculated in the direct--capture model. It is shown that the stellar carbon production is extremel…