  The paper reports a new electrostatic-confinement based fusion approach,
where, a new non-equilibrium distribution function for an ion-beam, compressed
by an external electric force, has been derived. This distribution function
allows the system to possess appreciably low and insignificant thermal energy
irrespective of the energy per particle. The spread in the energy among the
particles is attributed to the collisions in presence of the external force,
whereas; for equilibrium, the spreading in energy is due to the absence of the
force. The reactivity for a deuterium-deuterium fusion, using the proposed
distribution function, has been computed. It is shown that the fusion time is
comparable to the energy confinement time, collision time and transit time of
the ion for beam energy greater than 160 keV. The estimated energy gain Q
(ratio of fusion power to the power consumed by the system) is around 10 for
beam energy 160 keV and ion density 1018 cm-3. The energy loss due to particle
scattering is estimated and is taken into consideration in the estimation of
energy gain. An outline of a possible device is proposed according to the model
and is not similar to conventionally used in IEC systems based on collisions of
the beam with a reflex beam or with background gas or plasma.
