Beamed Energy Propulsion (BEP) is a new concept of generating an impulsive force
using energy not carried by propellant itself. It has a potential of hatching
new concepts of flight and transportation technology in the new century. For
example, when applied to space transportation, it will promote space activities
of humankind by reducing the cost of transportation. 
  The research of BEP has gained its momentum due to the increase of the number
of scientists conducting research on the subject and the volume of the activities.
The Fourth International Symposium on Beamed Energy Propulsion (ISBEP 4) 
will carry on the mission, started by its predecessors, ISBEP I, II, and III. 
�@ The range of the BEP applications has also evolved in the recent years from
the atmosphere to outer space or to micron-size inner space. "Beamed Energy"
includes all kinds of physical entities such as light, microwaves, x-rays and 
particle beams.  As practical R&D has begun, interdisciplinary collaboration 
among hydro-dynamics, beam transmission and energy driver science/technology 
will become crucial. The symposium intends to provide a wide range of specialists 
who might not otherwise meet with a unique international forum for exchanging ideas
and information on every aspect of BEP technology.

�@ All papers related to but not limited to the following subjects of BEP are 
solicited.
. Beamed energy propulsion science and technology
. Application of BEP technology
. Beaming science and technology
. Beam driver science and technology
. Power beaming
. Satellite power system
. Electric propulsion
. CW laser propulsion