Three-body correlations in the ground-state decay of
Abstract
Background: Theoretical calculations have shown that the energy and angular correlations in the three-body decay of the two-neutron unbound 26O can provide information on the ground-state wave function, which has been predicted to have a dineutron configuration and 2n halo structure. Purpose: To use the experimentally measured three-body correlations to gain insight into the properties of 26O, including the decay mechanism and ground-state resonance energy. Method: 26O was produced in a one-proton knockout reaction from 27F and the 24O + n + n decay products were measured using the MoNA-Sweeper setup. Additionally, the three-body correlations from the 26O ground-state resonance decay were extracted. The experimental results were compared to Monte Carlo simulations in which the resonance energy and decay mechanism were varied. Results: The measured three-body correlations were well reproduced by the Monte Carlo simulations but were not sensitive to the decay mechanism due to the experimental resolutions. However, the three-body correlations were found to be sensitive to the resonance energy of 26O. A 1σ upper limit of 53 keV was extracted for the ground-state resonance energy of 26O. Conclusions: Lastly, future attempts to measure the three-body correlations from the ground-state decay of 26O will be very challenging due tomore »
- Authors:
-
- Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Laboratory and Department of Chemistry
- Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Laboratory
- Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Laboratory and Department of Physics & Astronomy
- Hope College, Holland, MI (United States). Department of Physics
- Central Michigan University, Mt. Pleasant, MI (United States). Department of Physics
- Augustana College, Rock Island, IL (United States). Department of Physics & Astronomy
- Concordia College, Moorhead, MN (United States). Department of Physics
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States). Nuclear Science and Security Consortium
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1454776
- Grant/Contract Number:
- NA0000979
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C, Nuclear Physics
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 3; Journal ID: ISSN 0556-2813
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Kohley, Z., Baumann, T., Christian, G., DeYoung, P. A., Finck, J. E., Frank, N., Luther, B., Lunderberg, E., Jones, M., Mosby, S., Smith, J. K., Spyrou, A., and Thoennessen, M. Three-body correlations in the ground-state decay of O26. United States: N. p., 2015.
Web. doi:10.1103/PhysRevC.91.034323.
Kohley, Z., Baumann, T., Christian, G., DeYoung, P. A., Finck, J. E., Frank, N., Luther, B., Lunderberg, E., Jones, M., Mosby, S., Smith, J. K., Spyrou, A., & Thoennessen, M. Three-body correlations in the ground-state decay of O26. United States. https://doi.org/10.1103/PhysRevC.91.034323
Kohley, Z., Baumann, T., Christian, G., DeYoung, P. A., Finck, J. E., Frank, N., Luther, B., Lunderberg, E., Jones, M., Mosby, S., Smith, J. K., Spyrou, A., and Thoennessen, M. Fri .
"Three-body correlations in the ground-state decay of O26". United States. https://doi.org/10.1103/PhysRevC.91.034323. https://www.osti.gov/servlets/purl/1454776.
@article{osti_1454776,
title = {Three-body correlations in the ground-state decay of O26},
author = {Kohley, Z. and Baumann, T. and Christian, G. and DeYoung, P. A. and Finck, J. E. and Frank, N. and Luther, B. and Lunderberg, E. and Jones, M. and Mosby, S. and Smith, J. K. and Spyrou, A. and Thoennessen, M.},
abstractNote = {Background: Theoretical calculations have shown that the energy and angular correlations in the three-body decay of the two-neutron unbound 26O can provide information on the ground-state wave function, which has been predicted to have a dineutron configuration and 2n halo structure. Purpose: To use the experimentally measured three-body correlations to gain insight into the properties of 26O, including the decay mechanism and ground-state resonance energy. Method: 26O was produced in a one-proton knockout reaction from 27F and the 24O + n + n decay products were measured using the MoNA-Sweeper setup. Additionally, the three-body correlations from the 26O ground-state resonance decay were extracted. The experimental results were compared to Monte Carlo simulations in which the resonance energy and decay mechanism were varied. Results: The measured three-body correlations were well reproduced by the Monte Carlo simulations but were not sensitive to the decay mechanism due to the experimental resolutions. However, the three-body correlations were found to be sensitive to the resonance energy of 26O. A 1σ upper limit of 53 keV was extracted for the ground-state resonance energy of 26O. Conclusions: Lastly, future attempts to measure the three-body correlations from the ground-state decay of 26O will be very challenging due to the need for a precise measurement of the 24O momentum at the reaction point in the target.},
doi = {10.1103/PhysRevC.91.034323},
journal = {Physical Review C, Nuclear Physics},
number = 3,
volume = 91,
place = {United States},
year = {Fri Mar 20 00:00:00 EDT 2015},
month = {Fri Mar 20 00:00:00 EDT 2015}
}
Web of Science
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