Starts on: Saturday October 28 2017
From: 11:00 AM-06:00 PM
Departure at 11:00 AM
Each of the basic particles has a corresponding anti-particle, the American scientist Carl Anderson in 1932 using the cloud room to observe a charge in addition to the opposite of the other properties and electrons exactly the same particles, which is the first human test to detect the reverse Particle - positrons. As the high energy density positron research in the military, materials, energy and other fields of science has important strategic significance and application prospects, the field has become the international high-energy physics research hot and difficult.
Einstein's energy equation tells us that matter and energy can be transformed into each other. According to the quantum electrodatics we have known that super-intense laser pointer can tear the vacuum to produce positive and negative electron pairs, but the required laser intensity is at least seven orders of magnitude higher than the laser energy available in the current laboratory. This greatly limits the effort to artificially generate high-energy-density positrons.
In this paper, the double-cone super-intense laser is used to irradiate the double-cone target filled with near-critical density plasma, and the electron-excited high-energy gamma photon radiation is captured by the cone-relative theory. Then these high-energy gamma photons interact with the laser field, The multi-photon annihilation (ie, the Breit-Wheeler process) produces a pair of positive and negative electrons with high energy density, which effectively improves the efficiency of laser energy conversion into gamma and positrons.
When the radiation damping force is much larger than the lateral mass of the laser, the electrons are directly captured by the laser field to form a high energy density electron beam mass with a density of up to 40 times the critical density. These electrons, while accelerating in the direction of laser propagation, oscillate under the action of the laser transverse electric field to radiate high-energy photons outward. Three - dimensional numerical simulation results show that the number of photons is up to 850 times the critical density, the total number of photons is 1015 orders of magnitude. Due to the symmetry of the scheme, the high-energy photons formed on both sides will produce a large number of high-energy positive and negative electron pairs directly to the propagating green laser pointer photons.
The research scheme has the advantages of low cost and miniaturization, and can realize the direct collision of high energy positive and negative electrons in the scale of several centimeters. The peak brightness is up to 1033cm-2s-1, and the current world mainstream positive and negative electron collider The highest brightness of the equivalent. If the program's experimental breakthrough, will significantly reduce the cost and scale of the accelerator, in the current laboratory can produce high-energy density of positive and negative electron pairs and achieve collision, for high-energy physics and laboratory astrophysics and even future antimatter weapons research to open up a new way.
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