R-matrix description of particle energy spectra produced by low-energy 3H + 3H reactions

doi:10.1103/PhysRevC.92.014003

Title: R-matrix description of particle energy spectra produced by low-energy ³H + ³H reactions

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An R-matrix model for three-body final states is presented and applied to a recent measurement of the neutron energy spectrum from the ³H + ³H→ 2n + α reaction. The calculation includes the n alpha and n n interactions in the final state, angular momentum conservation, antisymmetrization, and the interference between different channels. A good fit to the measured spectrum is obtained, where clear evidence for the ⁵He ground state is observed. The model is also used to predict the alpha-particle spectrum from ³H + ³H as well as particle spectra from ³He + ³He. The R-matrix approach presented here is very general, and can be adapted to a wide variety of problems with three-body final states.

Authors:

Brune, C. R. ^[1] ; Caggiano, J. A. ^[2] ; Sayre, D. B. ^[2] ; Bacher, A. D. ^[3] ; Hale, G. M. ^[4] ; Paris, M. W. ^[4]

Ohio Univ., Athens, OH (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Indian Univ. Cyclotron Facility (IUCF), Bloomington, IN (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Publication Date:: 2015-07-20

Grant/Contract Number:: FG02-88ER40387; NA0001837; AC52-06NA25396; AC52-07NA27344

Type:: Accepted Manuscript

Journal Name:: Physical Review. C, Nuclear Physics

Additional Journal Information:: Journal Volume: 92; Journal Issue: 1; Journal ID: ISSN 0556-2813

Publisher:: American Physical Society (APS)

Research Org:: Ohio Univ., Athens, OH (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 22 GENERAL STUDIES OF NUCLEAR REACTORS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

OSTI Identifier:: 1227123

Alternate Identifier(s):: OSTI ID: 1196452


                    Brune, C. R., Caggiano, J. A., Sayre, D. B., Bacher, A. D., Hale, G. M., and Paris, M. W.. R-matrix description of particle energy spectra produced by low-energy 3H + 3H reactions.  United States: N. p.,  
        Web.  doi:10.1103/PhysRevC.92.014003.

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                    Brune, C. R., Caggiano, J. A., Sayre, D. B., Bacher, A. D., Hale, G. M., & Paris, M. W.. R-matrix description of particle energy spectra produced by low-energy 3H + 3H reactions.  United States.  doi:10.1103/PhysRevC.92.014003.

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                    Brune, C. R., Caggiano, J. A., Sayre, D. B., Bacher, A. D., Hale, G. M., and Paris, M. W.. 2015.  
        "R-matrix description of particle energy spectra produced by low-energy 3H + 3H reactions".  United States.  
        doi:10.1103/PhysRevC.92.014003.  https://www.osti.gov/servlets/purl/1227123.

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@article{osti_1227123,

  title        = {R-matrix description of particle energy spectra produced by low-energy 3H + 3H reactions},

  author       = {Brune, C. R. and Caggiano, J. A. and Sayre, D. B. and Bacher, A. D. and Hale, G. M. and Paris, M. W.},

  abstractNote = {An R-matrix model for three-body final states is presented and applied to a recent measurement of the neutron energy spectrum from the 3H + 3H→ 2n + α reaction. The calculation includes the n alpha and n n interactions in the final state, angular momentum conservation, antisymmetrization, and the interference between different channels. A good fit to the measured spectrum is obtained, where clear evidence for the 5He ground state is observed. The model is also used to predict the alpha-particle spectrum from 3H + 3H as well as particle spectra from 3He + 3He. The R-matrix approach presented here is very general, and can be adapted to a wide variety of problems with three-body final states.},

  doi          = {10.1103/PhysRevC.92.014003},

  journal      = {Physical Review. C, Nuclear Physics},

  number       = 1,

  volume       = 92,

  place        = {United States},

  year         = {2015},

  month        = {7}

}

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10.1103/PhysRevC.92.014003
https://doi.org/10.1103/PhysRevC.92.014003

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Title: R-matrix description of particle energy spectra produced by low-energy 3H + 3H reactions

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Title: R-matrix description of particle energy spectra produced by low-energy ³H + ³H reactions