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Initial Comparisons of Dual Nuclear Reactions in Thin Glass DT Capsules

Initial Comparisons of Dual Nuclear Reactions in Thin Glass DT Capsules. DD- p (3 MeV). Charged Particle Spectrometer. DT- α (3.5 MeV). DD- n (2.45 MeV). Neutron Time of Flight. DT- n (14.1 MeV). Collaborators. C.D. Chen, J. R. Rygg, S. Volkmer, D. Casey, F. H. Séguin,

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Initial Comparisons of Dual Nuclear Reactions in Thin Glass DT Capsules

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  1. Initial Comparisons of Dual Nuclear Reactions in Thin Glass DT Capsules DD-p (3 MeV) Charged Particle Spectrometer DT-α (3.5 MeV) DD-n (2.45 MeV) Neutron Time of Flight DT-n (14.1 MeV)

  2. Collaborators C.D. Chen, J. R. Rygg, S. Volkmer, D. Casey, F. H. Séguin, J. A. Frenje, C. K. Li, and R. D. Petrasso Plasma Science and Fusion Center Massachusetts Institute of Technology J. Delettrez, V. Yu. Glebov,S. Regan, S. Roberts,T. Sangster, andV. Smalyuk Laboratory for Laser Energetics University of Rochester

  3. Motivation • Dual nuclear reactions provide additional information about the target implosion • Dual spectra and yields allow for more rigorous benchmarking of simulations • Analysis of perceived discrepancies may shed physical insight into the implosion dynamics

  4. The Charged Particle Spectrometer allows us to measure spectra and yields on OMEGA The magnet spectrometer directs particles onto appropriately filtered CR-39 detectors.

  5. In thin glass DT implosions, CPS can measure the yield and spectra of the DD-p in the DT noise Shot 39792 DT(20)SiO2[3] Track Diameter filtering (also contrast, eccentricity)

  6. We can derive an Tion from Doppler broadening Tion can be derived from Doppler broadening. σ in keV, C = 1510 for DD-p nTOF provides us with DT neutron yields and Tion

  7. CPS provides us with DD-p yields in thin glass

  8. Reaction ratios fall slightly outside of expected ranges Data Range

  9. Future Work • Examine YOC and compare to DHe3 YOC discrepancies • Since DD-p do not escape CH surrogate capsules, we must study the DD-n with nTOF. We currently cannot see the DD-n in the DT-n background. • Thin Glass DD-p yields and spectra will allow us to validate DD neutron data when techniques are developed.

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