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We present a novel way of determining the plasma temperature in a laser-cluster fusion experiment on the Texas Petawatt laser, which uses the ratio of the 2.45 MeV neutron and 14.7 MeV proton yields.
The OMEGA laser system is being used to investigate several approaches to inertial confinement fusion: the traditional central-hot-spot (CHS) ignition, fast ignition (FI), and shock ignition (SI). To achieve ignition, CHS requires the highly uniform compression of a solid deuterium-tritium (DT)-layered target on a low adiabat (defined as the ratio of the pressure to the Fermi-degenerate pressure)...
Summary form only given. The OMEGA/OMEGA EP Laser System is being used to study a variety of approaches to direct-drive inertial confinement fusion-the traditional central hot-spot (CHS) approach, fast ignition (FI), and shock ignition (SI). To achieve ignition, CHS requires the highly uniform compression of a solid deuterium-tritium (DT) layered target on a low-adiabat (defined as the ratio of the...
Neutron generation experiment with deuterated methane (CD4) clusters exposed to a femtosecond laser beam (620 mJ, 28 fs) was done. The relation of ion energy distribution to cluster size was studied. By analyzing TOF ion signals, neutron yield was estimated to be 2 times 105 per laser shot.
Recent experiments have shown that interactions of intense ultrafast lasers with targets of small DD clusters with hundreds to thousands of atoms can produce very high ion temperature plasmas and produce DD fusion neutrons. Because ion temperatures exceeding 10 keV are achievable it is possible to produce high fusion yields even with laser pulses of a few joules to a few hundred joules. The fusion...
The "Laser Megajoule" (LMJ) in CEA/CESTA - Bordeaux is designed to deliver 240 laser beams and 7.5 kJ - 351 nm each to transmit 1.8 MJ on 0.3 mg Deuterium/Tritium encapsulated in gold micro-balloon. This project requires a carefully controlled energy, a high precision timing and extreme precisely positioned targets near the center of experiment chamber. This experiment will allow the complex...
A 10 TW Ti:sapphire laser is used to generate DD fusion neutrons and the characteristics of plasma has been investigated. Neutrons are generated from deuterium clusters which are formed from deuterium gas jet when cooled down to liquid nitrogen temperature.
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