Abstract
The cross section for the 124 Xe(n, γ ) 125 Xe reaction has been measured for the first time for neutron energies above 100 keV. In addition, the 124 Xe(n,2n) 123 Xe reaction has been studied between threshold and 14.8 MeV. The results of these measurements provide sensitive diagnostic tools for investigating properties of the inertial confinement fusion plasma in Deuterium-Tritium (DT) capsules at the National Ignition Facility (NIF) located at Lawrence Livermore National Laboratory.
Highlights
Nuclear reactions play an important role as diagnostic tools to understand the complicated physics governing the inertial confinement fusion (ICF) plasma
Efforts are underway at National Ignition Facility (NIF) to accurately measure the neutron energy distribution obtained in DT shots employing 192 powerful lasers, which deposit up to 500 TW of peak power (1000 times more than the US uses at any one moment) and up to 1.85 MJ of UV light on the DT pellet
Following a NIF shot, the xenon gas is collected with Radiochemical Analysis of Gaseous Samples (RAGS) [5], and subsequently the two isotopes 125Xe and 123Xe are analyzed using gamma ray spectrometry
Summary
Nuclear reactions play an important role as diagnostic tools to understand the complicated physics governing the inertial confinement fusion (ICF) plasma. Experimental data for the 124Xe(n,J)125Xe reaction does not exist above 30 keV neutron energy. 10.569 MeV, and its cross section increases with energy in the neutron energy region of interest.
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