Laser fusion burn diagnostics using several α-time-of-flight spectrometers

A more compact α-particle time-of-flight spectrometer using a permanent field deflection magnet has been developed for laser fusion burn diagnostics. The spectrometer is being used to measure the number and energy distribution of fusion-produced α particles emitted from laser implosions of DT gas contained in glass microshells. It is planned to view the target from different angles using several spectrometers simultaneously. Comparison of energy loss and energy broadening vs angle can yield information concerning the symmetry of compression and subsequent burn. Results from target experiments on the LLL ARGUS laser facility are present