
Sources of 14 MeV Neutrons
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(duopigatron) if high currents are required. e deuterium gas ow is regu-
lated into the ionsource by needle, thermomechanical, or palladium leaks. As
the ion beam analyzer requires relatively high power, the separation of the d
beam is made usually after acceleration.
e pulsing of the ion source allows the production of a pulsed beam, that
is, 14 MeV neutron burst, in the μs range, while the nanosecond pulsing can be
made before and after acceleration using special bunching units.
e acceleration tube is generally a homogeneous eld type allowing a high
pumping speed for the vacuum pumps situated at the ground potenti ...