First spectral measurement of deuterium-tritium fusion γ rays in inertial fusion experiments
Abstract
The R -matrix analysis of A =5 nuclear systems has been partially validated by applying the technique to the 5Li system and comparing the predicted γ -ray spectrum with historical data. R -matrix analysis of the similar 5He system was then used to predict the γ -ray spectral shape for the deuterium-tritium (DT) reaction. The resulting spectra have been used in the analysis of DT implosions on the Omega laser where the γ -ray interaction rate was measured by a gas Cherenkov detector. Comparison of predictions to experiment confirmed the presence of both 16.75 and ≈13 MeV γ -ray contributions; analysis, using R -matrix spectra, yielded a ratio of γ -ray emission from a transition to the intermediate excited state to that from a transition to the ground state of (2.1 ±0.4 ):1 , substantiating the first spectral measurement of the DT fusion γ ray in an inertial fusion environment.
- Publication:
-
Physical Review C
- Pub Date:
- August 2021
- DOI:
- 10.1103/PhysRevC.104.024610
- Bibcode:
- 2021PhRvC.104b4610H