Invariant-mass spectrum of O 11

T. B. Webb; R. J. Charity; J. M. Elson; D. E.M. Hoff; C. D. Pruitt; L. G. Sobotka; K. W. Brown; J. Barney; G. Cerizza; J. Estee; W. G. Lynch; J. Manfredi; P. Morfouace; C. Santamaria; S. Sweany; M. B. Tsang; T. Tsang; Y. Zhang; K. Zhu; S. A. Kuvin; D. McNeel; J. Smith; A. H. Wuosmaa; Z. Chajecki

doi:10.1103/PhysRevC.101.044317

Invariant-mass spectrum of O 11

T. B. Webb
, R. J. Charity
, J. M. Elson
, D. E.M. Hoff
, C. D. Pruitt
, L. G. Sobotka
, K. W. Brown
, J. Barney
, G. Cerizza
, J. Estee
, W. G. Lynch
, J. Manfredi
, P. Morfouace
, C. Santamaria
, S. Sweany
, M. B. Tsang
, T. Tsang
, Y. Zhang
, K. Zhu
, S. A. Kuvin

D. McNeel, J. Smith, A. H. Wuosmaa, Z. Chajecki

Department of Chemistry

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

The invariant-mass distribution of O11 fragments formed in two-neutron-knockout reactions with a O13 projectile and Be9 target has been further examined. Gating on events where the C9 decay fragments produced following 2p emission are recoiled transversely in the projectile's frame improves the overall invariant-mass resolution. The observed peak is now shown to have contributions from at least two O11 levels, in contradiction with the suggestion of Fortune [Phys. Rev. C 99, 051302(R) (2019)2469-998510.1103/PhysRevC.99.051302]. The data, however, do not differentiate between the ground-state properties obtained by the Gamow coupled-channels calculation and the prompt 2p-decay model of Fortune. The ground-state 2p-decay energy is 4.25(6) MeV in a two-level fit to the data, but lower values are possible if more states contribute to the observed spectrum, as suggested in the previous analysis.

Original language	English
Article number	044317
Journal	Physical Review C
Volume	101
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.101.044317
State	Published - Apr 2020

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Webb, T. B., Charity, R. J., Elson, J. M., Hoff, D. E. M., Pruitt, C. D., Sobotka, L. G., Brown, K. W., Barney, J., Cerizza, G., Estee, J., Lynch, W. G., Manfredi, J., Morfouace, P., Santamaria, C., Sweany, S., Tsang, M. B., Tsang, T., Zhang, Y., Zhu, K., ... Chajecki, Z. (2020). Invariant-mass spectrum of O 11. Physical Review C, 101(4), Article 044317. https://doi.org/10.1103/PhysRevC.101.044317

@article{ec1b8ef23fd44f51bbfc49290c76fc04,

title = "Invariant-mass spectrum of O 11",

abstract = "The invariant-mass distribution of O11 fragments formed in two-neutron-knockout reactions with a O13 projectile and Be9 target has been further examined. Gating on events where the C9 decay fragments produced following 2p emission are recoiled transversely in the projectile's frame improves the overall invariant-mass resolution. The observed peak is now shown to have contributions from at least two O11 levels, in contradiction with the suggestion of Fortune [Phys. Rev. C 99, 051302(R) (2019)2469-998510.1103/PhysRevC.99.051302]. The data, however, do not differentiate between the ground-state properties obtained by the Gamow coupled-channels calculation and the prompt 2p-decay model of Fortune. The ground-state 2p-decay energy is 4.25(6) MeV in a two-level fit to the data, but lower values are possible if more states contribute to the observed spectrum, as suggested in the previous analysis.",

author = "Webb, \{T. B.\} and Charity, \{R. J.\} and Elson, \{J. M.\} and Hoff, \{D. E.M.\} and Pruitt, \{C. D.\} and Sobotka, \{L. G.\} and Brown, \{K. W.\} and J. Barney and G. Cerizza and J. Estee and Lynch, \{W. G.\} and J. Manfredi and P. Morfouace and C. Santamaria and S. Sweany and Tsang, \{M. B.\} and T. Tsang and Y. Zhang and K. Zhu and Kuvin, \{S. A.\} and D. McNeel and J. Smith and Wuosmaa, \{A. H.\} and Z. Chajecki",

note = "Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = apr,

doi = "10.1103/PhysRevC.101.044317",

language = "English",

volume = "101",

journal = "Physical Review C",

issn = "2469-9985",

number = "4",

}

Webb, TB, Charity, RJ, Elson, JM, Hoff, DEM, Pruitt, CD, Sobotka, LG, Brown, KW, Barney, J, Cerizza, G, Estee, J, Lynch, WG, Manfredi, J, Morfouace, P, Santamaria, C, Sweany, S, Tsang, MB, Tsang, T, Zhang, Y, Zhu, K, Kuvin, SA, McNeel, D, Smith, J, Wuosmaa, AH & Chajecki, Z 2020, 'Invariant-mass spectrum of O 11', Physical Review C, vol. 101, no. 4, 044317. https://doi.org/10.1103/PhysRevC.101.044317

TY - JOUR

T1 - Invariant-mass spectrum of O 11

AU - Webb, T. B.

AU - Charity, R. J.

AU - Elson, J. M.

AU - Hoff, D. E.M.

AU - Pruitt, C. D.

AU - Sobotka, L. G.

AU - Brown, K. W.

AU - Barney, J.

AU - Cerizza, G.

AU - Estee, J.

AU - Lynch, W. G.

AU - Manfredi, J.

AU - Morfouace, P.

AU - Santamaria, C.

AU - Sweany, S.

AU - Tsang, M. B.

AU - Tsang, T.

AU - Zhang, Y.

AU - Zhu, K.

AU - Kuvin, S. A.

AU - McNeel, D.

AU - Smith, J.

AU - Wuosmaa, A. H.

AU - Chajecki, Z.

PY - 2020/4

Y1 - 2020/4

N2 - The invariant-mass distribution of O11 fragments formed in two-neutron-knockout reactions with a O13 projectile and Be9 target has been further examined. Gating on events where the C9 decay fragments produced following 2p emission are recoiled transversely in the projectile's frame improves the overall invariant-mass resolution. The observed peak is now shown to have contributions from at least two O11 levels, in contradiction with the suggestion of Fortune [Phys. Rev. C 99, 051302(R) (2019)2469-998510.1103/PhysRevC.99.051302]. The data, however, do not differentiate between the ground-state properties obtained by the Gamow coupled-channels calculation and the prompt 2p-decay model of Fortune. The ground-state 2p-decay energy is 4.25(6) MeV in a two-level fit to the data, but lower values are possible if more states contribute to the observed spectrum, as suggested in the previous analysis.

AB - The invariant-mass distribution of O11 fragments formed in two-neutron-knockout reactions with a O13 projectile and Be9 target has been further examined. Gating on events where the C9 decay fragments produced following 2p emission are recoiled transversely in the projectile's frame improves the overall invariant-mass resolution. The observed peak is now shown to have contributions from at least two O11 levels, in contradiction with the suggestion of Fortune [Phys. Rev. C 99, 051302(R) (2019)2469-998510.1103/PhysRevC.99.051302]. The data, however, do not differentiate between the ground-state properties obtained by the Gamow coupled-channels calculation and the prompt 2p-decay model of Fortune. The ground-state 2p-decay energy is 4.25(6) MeV in a two-level fit to the data, but lower values are possible if more states contribute to the observed spectrum, as suggested in the previous analysis.

UR - https://www.scopus.com/pages/publications/85085003014

U2 - 10.1103/PhysRevC.101.044317

DO - 10.1103/PhysRevC.101.044317

M3 - Article

AN - SCOPUS:85085003014

SN - 2469-9985

VL - 101

JO - Physical Review C

JF - Physical Review C

IS - 4

M1 - 044317

ER -

Invariant-mass spectrum of O 11

Abstract

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