{beta}-decay half-lives and {beta}-delayed neutron emission probabilities for neutron rich nuclei close to the N=82r-process path

Journal Article · Wed Mar 15 04:00:00 EST 2006 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.73.035801· OSTI ID:20771393

Montes, F; Estrade, A; Hosmer, P T; Ouellette, M; Schatz, H ^[1]; Liddick, S N; Mantica, P F; Tomlin, B E ^[2]; Morton, A C; Mueller, W F; Santi, P; Stolz, A ^[3]; Pellegrini, E ^[4]; Arndt, O; Kratz, K -L; Pfeiffer, B ^[5]; Reeder, P ^[6]; Walters, W B ^[7]; Aprahamian, A; Woehr, A ^[8]

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1. Joint Institute for Nuclear Astrophysics (United States)
2. Dept. of Chemistry, Michigan State University, E. Lansing, Michigan 48824 (United States)
3. National Superconducting Cyclotron Laboratory, Michigan State University, E. Lansing, Michigan 48824 (United States)
4. Dept. of Physics and Astronomy, Michigan State University, E. Lansing, Michigan 48824 (United States)
5. Institut fuer Kernchemie, Universitaet Mainz, Fritz-Strassmann Weg 2, D-55128 Mainz (Germany)
6. Richland, Washington 99352 (United States)
7. Dept. of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742 (United States)
8. Joint Institute for Nuclear Astrophysics, and Institute for Structure and Nuclear Astrophysics, University of Notre Dame, Notre Dame, Indiana 46616 (United States)

{beta}-delayed neutron emission branchings (or upper limits) for neutron rich {sup 116-120}Rh, {sup 120-122}Pd, and {sup 124}Ag have been measured. These branching ratios serve as direct inputs to astrophysical rapid neutron capture process models and affect the final abundances calculated in these models. In addition, half-lives for neutron rich {sup 114-115}Tc, {sup 114-118}Ru, {sup 116-121}Rh, and {sup 119-124}Pd near the proposed path of the r-process have also been measured. The results agree with theoretical quasiparticle random-phase approximation calculations within model uncertainties; the only exception is the delayed neutron branching in the decay of {sup 120}Rh, which is found to be much smaller than predicted.

• OSTI ID: 20771393
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 3 Vol. 73; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ABUNDANCE
BETA DECAY
BRANCHING RATIO
CAPTURE
DELAYED NEUTRONS
EMISSION
HALF-LIFE
NEUTRON REACTIONS
NEUTRON-RICH ISOTOPES
PALLADIUM 120
PROBABILITY
R PROCESS
RANDOM PHASE APPROXIMATION
RHODIUM 116
RHODIUM 117
RHODIUM 118
RUTHENIUM ISOTOPES
TECHNETIUM ISOTOPES