E141-04 - Forschungsbereich Neutron- and Quantum Physics E141-03 - Forschungsbereich Nuclear and Particle Physics
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Journal:
Physical Review C
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ISSN:
2469-9985
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Date (published):
2011
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Number of Pages:
8
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Publisher:
AMER PHYSICAL SOC
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Peer reviewed:
Yes
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Keywords:
Nuclear and High Energy Physics; Radiative capture; Resonances; 90 #lt= A #lt= 149; Nucleosynthesis in late stellar evolution
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Abstract:
The (n,γ) cross section of ⁹⁶Zr has been investigated at the CERN n_TOF spallation neutron source. High-resolution time-of-flight measurements using an enriched ZrO#_2 sample allowed us to analyze 15 resonances below 40 keV with improved accuracy. On average, the capture widths were found to be 25% smaller than reported in earlier experiments. If complemented with the contribution by direct radiative capture, the derived Maxwellian averaged cross sections are consistent with activation data at kT = 25 keV. The present results confirm the astrophysical implications for the s-process branching at ⁹⁵Zr.
en
Research Areas:
Materials Characterization: 80% Quantum Modelling and Simulation: 10% Modelling and Simulation: 10%
