Experiments for Laser-Induced Nuclear Fusion
The first observation of neutrons as a reaction product of the D-D reaction from a laser-irradiated target of lithium deuteride -- published by Basov, Kryukov et al. in 1968213 -- was a milestone in the experiments for laser-induced nuclear fusion. The target was irradiated by laser pulses of energy from 10 to 20 joules and pulse duration of about 10 picoseconds. The overall number of fusion neutrons was between 30 and 100 and was very close to the noise level of the detectors. This experiment has been repeated by Gobeli et al.,214 with similar pulses of a few picoseconds duration, but the number of neutrons generated was again not far above the noise level. Since these experiments no further results have been published on neutron production from deuterated targets with picosecond pulses. The breakthrough came in 1969, when Floux et al. irradiated solid deuterium with laser pulses of a few nanoseconds duration, producing 103 neutrons or more.215 Similar results were reported by Lubin at a Gordon Conference one week before the disclosure of Floux, without, however, undergoing the normal processes involved in regular publication.
KeywordsLaser Pulse Neutron Generation Neutron Production Fusion Neutron Incident Laser Energy
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