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Title: Proton Spectra from He 3 + T and He 3 + He 3 Fusion at Low Center-of-Mass Energy, with Potential Implications for Solar Fusion Cross Sections

Abstract

Few-body nuclear physics often relies upon phenomenological models, with new efforts at the ab initio theory reported recently; both need high-quality benchmark data, particularly at low center-of-mass energies. We use high-energy-density plasmas to measure the proton spectra from 3He + T and 3He + 3He fusion. The data disagree with R -matrix predictions constrained by neutron spectra from T + T fusion. Here, we present a new analysis of the 3He + 3He proton spectrum; these benchmarked spectral shapes should be used for interpreting low-resolution data, such as solar fusion cross-section measurements.

Authors:
 [1];  [2];  [2];  [1];  [3];  [4];  [5];  [2];  [5];  [1];  [2];  [6];  [5];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
  3. Ohio Univ., Athens, OH (United States)
  4. Indiana Univ., Bloomington, IN (United States)
  5. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  6. Univ. of Rochester, NY (United States). Lab. for Laser Energetics
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF)
OSTI Identifier:
1423855
Alternate Identifier(s):
OSTI ID: 1412948; OSTI ID: 1435514
Report Number(s):
LLNL-JRNL-745329; LA-UR-17-22452
Journal ID: ISSN 0031-9007; PRLTAO; TRN: US1801847
Grant/Contract Number:  
AC52-07NA27344; NA0001857; NA0002035; 1122374; FC52-08NA28752; FG02-88ER40387; NA0001837; AC52-06NA25396; B597367; 20150717PRD2; 415935-G
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 119; Journal Issue: 22; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Zylstra, A. B., Frenje, J. A., Gatu Johnson, M., Hale, G. M., Brune, C. R., Bacher, A., Casey, D. T., Li, C. K., McNabb, D., Paris, M., Petrasso, R. D., Sangster, T. C., Sayre, D. B., and Séguin, F. H. Proton Spectra from He3+T and He3+He3 Fusion at Low Center-of-Mass Energy, with Potential Implications for Solar Fusion Cross Sections. United States: N. p., 2017. Web. doi:10.1103/PhysRevLett.119.222701.
Zylstra, A. B., Frenje, J. A., Gatu Johnson, M., Hale, G. M., Brune, C. R., Bacher, A., Casey, D. T., Li, C. K., McNabb, D., Paris, M., Petrasso, R. D., Sangster, T. C., Sayre, D. B., & Séguin, F. H. Proton Spectra from He3+T and He3+He3 Fusion at Low Center-of-Mass Energy, with Potential Implications for Solar Fusion Cross Sections. United States. doi:10.1103/PhysRevLett.119.222701.
Zylstra, A. B., Frenje, J. A., Gatu Johnson, M., Hale, G. M., Brune, C. R., Bacher, A., Casey, D. T., Li, C. K., McNabb, D., Paris, M., Petrasso, R. D., Sangster, T. C., Sayre, D. B., and Séguin, F. H. Wed . "Proton Spectra from He3+T and He3+He3 Fusion at Low Center-of-Mass Energy, with Potential Implications for Solar Fusion Cross Sections". United States. doi:10.1103/PhysRevLett.119.222701. https://www.osti.gov/servlets/purl/1423855.
@article{osti_1423855,
title = {Proton Spectra from He3+T and He3+He3 Fusion at Low Center-of-Mass Energy, with Potential Implications for Solar Fusion Cross Sections},
author = {Zylstra, A. B. and Frenje, J. A. and Gatu Johnson, M. and Hale, G. M. and Brune, C. R. and Bacher, A. and Casey, D. T. and Li, C. K. and McNabb, D. and Paris, M. and Petrasso, R. D. and Sangster, T. C. and Sayre, D. B. and Séguin, F. H.},
abstractNote = {Few-body nuclear physics often relies upon phenomenological models, with new efforts at the ab initio theory reported recently; both need high-quality benchmark data, particularly at low center-of-mass energies. We use high-energy-density plasmas to measure the proton spectra from 3He + T and 3He + 3He fusion. The data disagree with R -matrix predictions constrained by neutron spectra from T + T fusion. Here, we present a new analysis of the 3He + 3He proton spectrum; these benchmarked spectral shapes should be used for interpreting low-resolution data, such as solar fusion cross-section measurements.},
doi = {10.1103/PhysRevLett.119.222701},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 22,
volume = 119,
place = {United States},
year = {2017},
month = {11}
}

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