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Title: Particle decays of levels in N 11 , 12 and O 12 investigated with the invariant-mass method

Abstract

Particle-decaying states of the light nuclei 11,12N and 12O were studied using the invariant-mass method. The decay energies and intrinsic widths of a number of states were measured, and the momentum correlations of three-body decaying states were considered. A second $2p$-decaying 2 + state of 12O was observed for the first time, and a higher-energy 12O state was observed in the 4$p$+2α decay channel. This 4$p$+2α channel also contains contributions from fissionlike decay paths, including 6Beg.s.+6Be g.s.. Analogs to these states in 12O were found in 12N in the 2$p$+ 10B and 2$p$+α+ 6Li channels. The momentum correlations for the prompt 2$p$ decay of 12O g.s. were found to be nearly identical to those of 16Ne g.s., and the correlations for the new 2 + state were found to be consistent with sequential decay through excited states in 11N. The momentum correlations for the 2$$^+_1$$ state in 12O provide a new value for the 11N ground-state energy. Finally, the states in 12N/ 12O that belong to the A=12 isobaric sextet do not deviate from the quadratic isobaric multiplet mass equation form

Authors:
 [1]; ORCiD logo [1];  [1];  [1];  [1];  [1];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [2];  [3];  [3] more »;  [3];  [4] « less
  1. Washington Univ., St. Louis, MO (United States)
  2. Michigan State Univ., East Lansing, MI (United States)
  3. Univ. of Connecticut, Storrs, CT (United States)
  4. Western Michigan Univ., Kalamazoo MI (United States)
Publication Date:
Research Org.:
Washington Univ., St. Louis, MO (United States)
Sponsoring Org.:
USDOE Office of Science (SC); USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1546982
Alternate Identifier(s):
OSTI ID: 1547962
Grant/Contract Number:  
FG02-87ER40316; FG02-87ER-40316; FG02-04ER-41320; SC0014552; SC0013365; SC0018083; SC0009971; NA0002135
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review C
Additional Journal Information:
Journal Volume: 100; Journal Issue: 2; Journal ID: ISSN 2469-9985
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Webb, Tylor B, Charity, Robert J., Elson, Jon M., Hoff, Daniel E.M., Pruitt, Cole D., Sobotka, Lee G., Brown, Kyle W., Barney, Jon, Cerizza, Giordano, Estee, Justin, Lynch, William G., Manfredi, Jan, Morfouace, Piere, Santamaria, C., Sweany, Sean, Tsang, M. betty, Wang, Simin M., Zhu, Kuan, Kuvin, S. A., McNeel, Daniel, Wuosmaa, Alan H., and Chajecki, Zbigniew. Particle decays of levels in N11,12 and O12 investigated with the invariant-mass method. United States: N. p., 2019. Web. doi:10.1103/PhysRevC.100.024306.
Webb, Tylor B, Charity, Robert J., Elson, Jon M., Hoff, Daniel E.M., Pruitt, Cole D., Sobotka, Lee G., Brown, Kyle W., Barney, Jon, Cerizza, Giordano, Estee, Justin, Lynch, William G., Manfredi, Jan, Morfouace, Piere, Santamaria, C., Sweany, Sean, Tsang, M. betty, Wang, Simin M., Zhu, Kuan, Kuvin, S. A., McNeel, Daniel, Wuosmaa, Alan H., & Chajecki, Zbigniew. Particle decays of levels in N11,12 and O12 investigated with the invariant-mass method. United States. doi:10.1103/PhysRevC.100.024306.
Webb, Tylor B, Charity, Robert J., Elson, Jon M., Hoff, Daniel E.M., Pruitt, Cole D., Sobotka, Lee G., Brown, Kyle W., Barney, Jon, Cerizza, Giordano, Estee, Justin, Lynch, William G., Manfredi, Jan, Morfouace, Piere, Santamaria, C., Sweany, Sean, Tsang, M. betty, Wang, Simin M., Zhu, Kuan, Kuvin, S. A., McNeel, Daniel, Wuosmaa, Alan H., and Chajecki, Zbigniew. Tue . "Particle decays of levels in N11,12 and O12 investigated with the invariant-mass method". United States. doi:10.1103/PhysRevC.100.024306.
@article{osti_1546982,
title = {Particle decays of levels in N11,12 and O12 investigated with the invariant-mass method},
author = {Webb, Tylor B and Charity, Robert J. and Elson, Jon M. and Hoff, Daniel E.M. and Pruitt, Cole D. and Sobotka, Lee G. and Brown, Kyle W. and Barney, Jon and Cerizza, Giordano and Estee, Justin and Lynch, William G. and Manfredi, Jan and Morfouace, Piere and Santamaria, C. and Sweany, Sean and Tsang, M. betty and Wang, Simin M. and Zhu, Kuan and Kuvin, S. A. and McNeel, Daniel and Wuosmaa, Alan H. and Chajecki, Zbigniew},
abstractNote = {Particle-decaying states of the light nuclei 11,12N and 12O were studied using the invariant-mass method. The decay energies and intrinsic widths of a number of states were measured, and the momentum correlations of three-body decaying states were considered. A second $2p$-decaying 2+ state of 12O was observed for the first time, and a higher-energy 12O state was observed in the 4$p$+2α decay channel. This 4$p$+2α channel also contains contributions from fissionlike decay paths, including 6Beg.s.+6Beg.s.. Analogs to these states in 12O were found in 12N in the 2$p$+ 10B and 2$p$+α+6Li channels. The momentum correlations for the prompt 2$p$ decay of 12Og.s. were found to be nearly identical to those of 16Neg.s., and the correlations for the new 2+ state were found to be consistent with sequential decay through excited states in 11N. The momentum correlations for the 2$^+_1$ state in 12O provide a new value for the 11N ground-state energy. Finally, the states in 12N/12O that belong to the A=12 isobaric sextet do not deviate from the quadratic isobaric multiplet mass equation form},
doi = {10.1103/PhysRevC.100.024306},
journal = {Physical Review C},
number = 2,
volume = 100,
place = {United States},
year = {2019},
month = {8}
}

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