US scientists are investigating how neutron energy is used by Nuclear detonation It is more effective in conversion a Asteroid, accurate technology if one threatens to hit Earth.
Scientists from LLNL (Lawrence Livermore National Laboratory) and AFIT (Air Force Technology Institute) compare Asteroid deflection It is produced by two different sources of neutron energy: fission and fusion. The goal was to better understand the neutron energies emitted by a nuclear explosion at deflecting an asteroid’s path and why.
Work is shown in Astronautics Law It has focused on neutron radiation from a nuclear detonation, ever since Neutrons can be more penetrating than X-rays.
“This means that the emission of neutrons can heat larger quantities of material from the surface of an asteroid and thus be more effective in deflecting asteroids than the emission of X-rays,” lead researcher Lansing said in a statement.
Neutrons of different energies can interact with the same substance through different reaction mechanisms. By changing the distribution and density of the deposited energy, the resulting deflection of an asteroid can also be affected.
The research shows that the deposition of energy on the curved surface of the asteroid could be very different between the two nuclear explosions that were compared in this work. When the deposited energy is distributed differently on the asteroid, this means that the molten / evaporated debris can change in quantity and velocity, which ultimately determines the resulting change in the asteroid’s velocity.
Horan said there are two basic options for defeating an asteroid: destructive or deflecting.
Destruction is the method of transferring so much energy to the asteroid that it is forcefully shattered into many fragments moving at top speeds.
“Previous work found that more than 99.5 percent of the original asteroid’s mass would exceed Earth,” he said. “This turbulence pathway would likely be considered if the warning time before the asteroid collision was short and / or the asteroid was relatively small.”
Deflection is the gentle technique, which involves transferring less energy to the asteroid, keeping the object intact, and propelling it into a slightly different orbit at a slightly modified speed.
“With the passage of time, with the many years elapsing before the collision, even a small change in speed could add a lost distance from the ground,” Horan said. “In general, deviation may be preferred as the safer and ‘elegant’ option, if we have sufficient warning time to implement this type of response. That is why our work focused on deviation.”
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