Neutron knockout of {sup 12}Be populating neutron-unbound states in {sup 11}Be

Journal Article · Sun May 15 04:00:00 EDT 2011 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.83.057304· OSTI ID:21502524

Peters, W A ^[1]; Baumann, T; Lecouey, J -L; Schiller, A; Yoneda, K ^[2]; Brown, B A; Frank, N; Thoennessen, M ^[3]; Brown, J ^[4]; DeYoung, P A; Peaslee, G F ^[5]; Finck, J E ^[6]; Jones, K L ^[1]; Luther, B ^[7]; Rogers, W F ^[8]; Tostevin, J A ^[9]

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1. Department of Physics and Astronomy, Rutgers, State University of New Jersey, Piscataway, New Jersey 08854 (United States)
2. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (United States)
3. Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States)
4. Department of Physics, Wabash College, Crawfordsville, Indiana 47933 (United States)
5. Department of Physics, Hope College, Holland, Michigan 49423 (United States)
6. Department of Physics, Central Michigan University, Mt. Pleasant, Michigan 48859 (United States)
7. Department of Physics, Concordia College, Moorhead, Minnesota 56562 (United States)
8. Department of Physics, Westmont College, Santa Barbara, California 93108 (United States)
9. Department of Physics, Faculty of Engineering and Physical Sciences, University of Surrey, Guildford, Surrey GU27XH (United Kingdom)

Neutron-unbound resonant states of {sup 11}Be were populated in neutron knockout reactions from {sup 12}Be and identified by {sup 10}Be-n coincidence measurements. A resonance in the decay-energy spectrum at 80(2) keV was attributed to a highly excited unbound state in {sup 11}Be at 3.949(2) MeV decaying to the 2{sup +} excited state in {sup 10}Be. A knockout cross section of 15(3) mb was inferred for this 3.949(2) MeV state, suggesting a spectroscopic factor near unity for this 0p3/2{sup -} level, consistent with the detailed shell model calculations.

• OSTI ID: 21502524
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 83; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BARYONS
BERYLLIUM 10
BERYLLIUM 11
BERYLLIUM 12
BERYLLIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BOSONS
COINCIDENCE METHODS
COUNTING TECHNIQUES
CROSS SECTIONS
DIMENSIONLESS NUMBERS
DIRECT REACTIONS
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY SPECTRA
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
HADRONS
ISOTOPES
KNOCK-OUT REACTIONS
LIGHT NUCLEI
MATHEMATICAL MODELS
MESONS
MEV RANGE
MEV RANGE 01-10
MILLISECONDS LIVING RADIOISOTOPES
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
RADIOISOTOPES
RESONANCE
SECONDS LIVING RADIOISOTOPES
SHELL MODELS
SPECTRA
SPECTROSCOPIC FACTORS
YEARS LIVING RADIOISOTOPES