Level scheme of 148Pm and the s-process neutron density

Details Level scheme of 148Pm and the s-process neutron density Level scheme of 148Pm and the s-process neutron density

Feb 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phrvc..39..619l&link_type=abstract

Physical Review C (Nuclear Physics), Volume 39, Issue 2, February 1989, pp.619-625

Physics

Nuclear Physics

10

Gamma Transitions And Level Energies, Stellar Structure, Interiors, Evolution, Nucleosynthesis, Ages, 90<=A<=149

Scientific paper

A level scheme of 148Pm up to 800 keV is deduced from gamma-ray coincidence data and published particle transfer data. Approximately 106 gamma-ray transitions have been placed between 36 levels. We have identified three levels below 500 keV in excitation which decay to both the ground state and to the isomeric level at 137 keV. The presence of these levels guarantees that 148Pmg,m are in thermal equilibrium during the s process. The s-process neutron density inferred from the branch point at 148Pm is deduced to be 3×108/cm3.

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