If we have a simple discharge tube filled by deuterium gas or even heavy water, and put tungsten electrodes close to each other to create a huge electric field, then using a megavolt generator to apply a few million volts arcing .
can significant fusion occur in this manner ? is possible to generate a large amount of neutrons by this way ?
if it is not possible to create fusion by this way , is it possible to create it by using very high amperage discharge to reach few millions degree temperature to induce fusion ?
if a fusion using this simple design possible , why it is not widely used ?