Stellar (n, gamma) cross sections of neutron-rich nuclei

Journal Article · Mon Mar 01 04:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3362587· OSTI ID:21371071

Marganiec, J ^[1]; Dillmann, I ^[2]; Domingo Pardo, C ^[1]; Kaeppeler, F ^[3]

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1. GSI Helmholtzzentrum fuer Schwerionenforschung GmbH, Planckstr. 1, D-64291 Darmstadt (Germany)
2. Physik-Department E12 and Excellence Cluster Universe, Technische Universitaet Muenchen, 85748 Garching (Germany)
3. Forschungszentrum Karlsruhe, Institut fuer Kernphysik, 76344 Eggenstein-Leopoldshafen (Germany)

The present measurements were performed by means of the activation technique. Neutrons were produced at the Karlsruhe Van de Graaff accelerator via the {sup 7}Li(p,n){sup 7}Be reaction. For proton energies just above threshold, one obtains a neutron spectrum similar to a Maxwellian distribution for kT = 25 keV. This quasi-stellar neutron spectrum allowed us to measure the Maxwellian averaged cross sections directly. The experimental results of {sup 174,176}Yb, {sup 184,186}W, {sup 190,192}Os, {sup 196,198}Pt, and {sup 202}Hg were extrapolated from kT = 25 keV to lower and higher temperatures.

• OSTI ID: 21371071
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1213; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BARYON REACTIONS
BARYONS
BERYLLIUM 7
BERYLLIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DAYS LIVING RADIOISOTOPES
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
GAMMA RADIATION
HADRON REACTIONS
HADRONS
HEAVY NUCLEI
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIGHT NUCLEI
LITHIUM 7 TARGET
MERCURY 202 TARGET
NEUTRON REACTIONS
NEUTRON SPECTRA
NEUTRON-RICH ISOTOPES
NEUTRONS
NUCLEAR REACTIONS
NUCLEAR TEMPERATURE
NUCLEI
NUCLEON REACTIONS
NUCLEONS
NUCLEOSYNTHESIS
OSMIUM 190 TARGET
OSMIUM 192
OSMIUM 192 TARGET
OSMIUM ISOTOPES
PLATINUM 198 TARGET
PROTON REACTIONS
RADIATIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
STABLE ISOTOPES
SYNTHESIS
TARGETS
TUNGSTEN 184 TARGET
TUNGSTEN 186 TARGET
YTTERBIUM 174 TARGET
YTTERBIUM 176 TARGET