# Measurement of (α,n) reaction crosssections of erbium isotopes for testingastrophysical rate predictions

@inproceedings{Kiss2015MeasurementO,
title={Measurement of ($\alpha$,n) reaction crosssections of erbium isotopes for testingastrophysical rate predictions},
author={G{\'a}bor Gyula Kiss and Tam'as Szucs and Thomas Rauscher and Zs. Torok and L{\'a}szl{\'o} Csedreki and Zs. Fulop and Gy. Gyurky and Z. Hal'asz},
year={2015}
}
• Published 6 March 2015
• Physics
The γ-process in core-collapse and/or type Ia supernova explosions is thought to explain the origin of the majority of the so-called p nuclei (the 35 protonrich isotopes between Se and Hg). Reaction rates for γ-process reaction network studies have to be predicted using Hauser–Feshbach statistical model calculations. Recent investigations have shown problems in the prediction of α-widths at astrophysical energies which are an essential input for the statistical model. It has an impact on…
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## References

SHOWING 1-10 OF 75 REFERENCES
Astrophysical analysis of the measurement of (α,γ) and (α,n) cross sections of 169Tm
• Physics
• 2012
energy range 12.6 ≤ E� ≤ 17.5 MeV and 11.5 ≤ E� ≤ 17.5 MeV, respectively, using the recently introduced method of combining activation with X-ray counting. Improved shielding allowed to measure the
Solution of the α-potential mystery in the γ process and its impact on the Nd/Sm ratio in meteorites.
Since Coulomb excitation does not affect α emission, the 148Gd(γ,α) rate is much higher than previously assumed, which leads to very small 146Sm/144Sm stellar production ratios, in even more pronounced conflict with the meteorite data.
Nuclear level density and the determination of thermonuclear rates for astrophysics
• Physics
• 1997
The prediction of cross sections for nuclei far off stability is crucial in the field of nuclear astrophysics. In recent calculations the nuclear level density{emdash}as an important ingredient to
Neutron Capture in Low Mass Asymptotic Giant Branch Stars: Cross Sections and Abundance Signatures
• Physics
• 1999
Recently improved information on the stellar (n, γ) cross sections of neutron magic nuclei at N = 82, and in particular of 142Nd, turn out to represent a sensitive test for models of s-process
Determination of 141Pr(alpha,n)144Pm cross sections at energies of relevance for the astrophysical p-process using the gamma-gamma coincidence method
• Physics
• 2011
The reaction 141 Pr(α,n) 144 Pm was investigated between Eα = 11 MeV and 15 MeV with the activation method using the γγ coincidence method with a segmented clover-type high-purity Germanium (HPGe)
Constraining the astrophysical origin of the p-nuclei through nuclear physics and meteoritic data.
• Physics
Reports on progress in physics. Physical Society
• 2013
The main part of the review focuses on the nuclear uncertainties involved in the determination of the astrophysical reaction rates required for the extended reaction networks used in nucleosynthesis studies.
Type Ia supernovae as sites of the p-process: two-dimensional models coupled to nucleosynthesis
• Physics
• 2011
Beyond Fe, there is a class of 35 proton-rich nuclides, between 74Se and 196Hg, called p-nuclei. They are bypassed by the s and r neutron capture processes and are typically 10-1000 times less
The P-Process in a Realistic Supernova Model
• Physics
• 1991
The astrophysically most plausible site for the synthesis of the (Z ≥ 34) neutron deficient isotopes (the “p-nuclei”) seems to be the deep interior of highly evolved massive stars. There, (γ, n.)