Fusion Message Board

In this space, visitors are invited to post any comments, questions, or skeptical observations about Philo T. Farnsworth's contributions to the field of Nuclear Fusion research.

Subject: Re: Minimum fusion energy? Voltage?
Date: Aug 18, 7:26 pm
Poster: John Owen

On Aug 18, 7:26 pm, John Owen wrote:

>This means that a deuteron must hit another deuteron or deuterium atom with a total expenditure of kinetic energy of ~37kev. This is a minimal value and not an optimum value.
>...
>Our fusor is a multipactor or deuteron collisional machine in its finest and ideal form. This means that we are not supposed to see neutrons or fusion reactions until that magic 37kev threshold. As we are achieving double the energy in head on collisions, and head-ons only, We would expect the first fusions to become possible at 17.5 kv potential applied. Again, this is threshold.
>
>...
>From this point on, due to deuterium-deuterium collisional cross sections, based on pre-existing data tables, we should expect ever more neutrons with increasing voltage. This, theoretically seem to increase in a roughly linear manner up to about 300,000 volts applied to our chamber. Actually it should go up much more rapidly than this due to the nature of the IEC device!
>
> As we up the voltage, more gas volume is included in the region of prime acceleration to achieve fusion energy. So, as the cross section rises, we also have more deuterons AT FUSION ENERGY added to the equation.
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>In addition, we are getting more and more off axis hits creating fusion due to individual deuterons colliding with energies well above that needed to fuse head-on.
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>
OK, given your grid, or an 8-way multipactor, this would mean you would see onset at 17.5KV, followed by spikes in neutron production at 20.2KV, then 35KV. The spikes are corresponding to off-axis (60 & 120 degree) interactions crossing the energy barrier. Can you measure these? Or am I way off track here?