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Title: Two-neutron sequential decay of O 24

Abstract

In this study, a two-neutron unbound excited state of 24O was populated through a (d,d') reaction at 83.4 MeV/nucleon. A state at E=715±110 (stat) ±45 (sys) keV with a width of Γ<2 MeV was observed above the two-neutron separation energy placing it at 7.65 ± 0.2 MeV with respect to the ground state. Three-body correlations for the decay of 24O → 22O + 2n show clear evidence for a sequential decay through an intermediate state in 23O. Neither a di-neutron nor phase-space model for the three-body breakup were able to describe these correlations.

Authors:
 [1];  [2];  [3];  [4];  [2];  [4];  [5];  [6];  [7];  [6];  [3];  [3];  [2];  [8];  [1];  [1];  [9];  [6];  [2];  [10] more »;  [1] « less
  1. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy
  2. Augustana College, Rock Island, IL (United States)
  3. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Laboratory
  4. Hope College, Holland, MI (United States). Department of Physics
  5. Central Michigan University, Mount Pleasant, MI (United States). Department of Physics
  6. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Laboratory and Department of Chemistry
  7. Indiana University South Bend, IN (United States). Department of Physics and Astronomy
  8. Westmont College, Santa Barbara, CA (United States). Department of Physics
  9. Gettysburg College, PA (United States). Department of Physics
  10. Michigan State Univ., East Lansing, MI (United States). National Superconducting Cyclotron Laboratory, Department of Physics and Astronomy and Joint Institute for Nuclear Astrophysics – Center for the Evolution of the Elements
Publication Date:
Research Org.:
Nuclear Science and Security Consortium, Berkeley, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1454772
Alternate Identifier(s):
OSTI ID: 1227080
Grant/Contract Number:  
NA0000979
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 5; 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

Jones, M. D., Frank, N., Baumann, T., Brett, J., Bullaro, J., DeYoung, P. A., Finck, J. E., Hammerton, K., Hinnefeld, J., Kohley, Z., Kuchera, A. N., Pereira, J., Rabeh, A., Rogers, W. F., Smith, J. K., Spyrou, A., Stephenson, S. L., Stiefel, K., Tuttle-Timm, M., Zegers, R. G. T., and Thoennessen, M. Two-neutron sequential decay of O24. United States: N. p., 2015. Web. doi:10.1103/PhysRevC.92.051306.
Jones, M. D., Frank, N., Baumann, T., Brett, J., Bullaro, J., DeYoung, P. A., Finck, J. E., Hammerton, K., Hinnefeld, J., Kohley, Z., Kuchera, A. N., Pereira, J., Rabeh, A., Rogers, W. F., Smith, J. K., Spyrou, A., Stephenson, S. L., Stiefel, K., Tuttle-Timm, M., Zegers, R. G. T., & Thoennessen, M. Two-neutron sequential decay of O24. United States. doi:10.1103/PhysRevC.92.051306.
Jones, M. D., Frank, N., Baumann, T., Brett, J., Bullaro, J., DeYoung, P. A., Finck, J. E., Hammerton, K., Hinnefeld, J., Kohley, Z., Kuchera, A. N., Pereira, J., Rabeh, A., Rogers, W. F., Smith, J. K., Spyrou, A., Stephenson, S. L., Stiefel, K., Tuttle-Timm, M., Zegers, R. G. T., and Thoennessen, M. Wed . "Two-neutron sequential decay of O24". United States. doi:10.1103/PhysRevC.92.051306. https://www.osti.gov/servlets/purl/1454772.
@article{osti_1454772,
title = {Two-neutron sequential decay of O24},
author = {Jones, M. D. and Frank, N. and Baumann, T. and Brett, J. and Bullaro, J. and DeYoung, P. A. and Finck, J. E. and Hammerton, K. and Hinnefeld, J. and Kohley, Z. and Kuchera, A. N. and Pereira, J. and Rabeh, A. and Rogers, W. F. and Smith, J. K. and Spyrou, A. and Stephenson, S. L. and Stiefel, K. and Tuttle-Timm, M. and Zegers, R. G. T. and Thoennessen, M.},
abstractNote = {In this study, a two-neutron unbound excited state of 24O was populated through a (d,d') reaction at 83.4 MeV/nucleon. A state at E=715±110 (stat) ±45 (sys) keV with a width of Γ<2 MeV was observed above the two-neutron separation energy placing it at 7.65 ± 0.2 MeV with respect to the ground state. Three-body correlations for the decay of 24O → 22O + 2n show clear evidence for a sequential decay through an intermediate state in 23O. Neither a di-neutron nor phase-space model for the three-body breakup were able to describe these correlations.},
doi = {10.1103/PhysRevC.92.051306},
journal = {Physical Review. C, Nuclear Physics},
number = 5,
volume = 92,
place = {United States},
year = {2015},
month = {11}
}

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