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

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, and V. Smalyuk Laboratory for Laser Energetics University of Rochester Collaborators

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

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

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

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

CPS provides us with DD-p yields in thin glass

Reaction ratios fall slightly outside of expected ranges Data Range

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.