Serg, as far as I remember from huge Relativistic Kill Vehicles (RKV planet killers thread it's more or less consensus that maneuverable relativistic target could not be practically intersepted with single interceptor.
The fact that this mass is spread out over an area the size of a planet is roughly balanced out by the fact that the incoming munitions have the kinetic energy necessary to devastate and entire planet's surface.However, this defense cloud is many planet diameters deepthe cone balloons out into a trumpet shape and then to a spherical expanding explosion quickly.Tell us more about it here!Massmind can provide some input.This does not at all square with your previous assertion that "the amount of gaseous material the defenders need to throw up is about the same mass as the total mass of the incoming munitions".However, as it becomes more diffuse it does interact more weakly (the plasma is still moving at negligibly diminished relativistic speeds).For example, if this defense cloud is being thrown from near the planet itself with crude chemical rocket exhausts, the cloud would plausibly be around 20 planet diameters away.In fact, energy efficiency of lightsails increases with speed.Serg target propulsion the same, of games for psp 3004 target evades if it far enough from interceptor and have comparable fuel resource.
This one won't work because it's not plausible to focus a particle beam over interplanetary distances, much less interstellar distances.
Realistically, even 1000m/s2 is highly optimistic for the sail not to instantly rip apart from slightly uneven acceleration.
They just give too much "free energy" to the defender to vaporize your munitions with their own incredible kinetic energy.
That suffices for Usenet I suppose the real trick is to figure out how many ev you have to impart to the nucleus to have it miss the planet, then estimate the cross section for that interaction.
He's saying that our conclusion was that a near-c interceptor probably could not intercept a maneuverable target.
In this scenario, the RKV plasma cloud impacts upon the planet across a region about 1500 km in diameter (instead of 100 km).The final hours or weeks of acceleration is provided by the beam generated in the final seconds or minutes of beam generation.Often, such papers determine empirical formulae for cross-section based on various properties, and propose theoretical models to explain them.What relativistic velocity are they moving towards each other?Rg is saying the opposite of what I think you think he's saying.Now obviously the electrons can't just nick off and leave the nucleons behind due to electromagnetic forces.No two play-throughs will be quite the same.Therefore they cannot avoid being caught.Brian McGuinness So instead of a missile you now have a gas with nearly the same momentum and kinetic energy approaching the planet.