A research team led by Professor Murakami and professor at the Institute of Laser Science at Osaka University in Japan announced that they have discovered a new particle acceleration mechanism called "microbubble implosion": to the outside of hydrogen compounds containing micron-sized bubbles (spherical voids) Irradiating the ultra-high-intensity laser pointer, the bubble emits ultra-high-energy hydrogen ions (protons) at the moment of shrinking to the atomic size.
In this mechanism, positively charged ions are filled with bubbles with ultra-high temperature electrons of 100 billion degrees Celsius, resulting in a strong negative electrostatic force that accelerates to the center of the bubble. Innumerable ions accelerate and collide at high speeds at the singular points in the center of the sphere. In theory, high-density compression comparable to the interior of white dwarfs can be achieved in a nanometer-scale minimum space of only a few dozen atoms. If the substance is compressed to an unprecedented ultra-high density, a cube-sized substance can weigh more than 100 kg.
In addition, the researchers found that the bubbles repeatedly shrink and expand in a period of tens of femtoseconds, and when they are reduced to the nanometer size and reach the maximum compression, the high-energy protons are radiated, which is as novel as the "nano-pulse".
If you use a traditional laser pointer accelerator, the acceleration distance of high-energy particles can take tens of meters to hundreds of meters. This amazing physical phenomenon of nanoscale positive charge radiation is the first to be discovered. In this phenomenon, the decisive role is the exact opposite movement of the Big Bang, that is, the charged ions shrink to a point in space and collide at an ultra-high speed of about half the speed of light - this is the result of discovery and prediction so far. All acceleration principles are fundamentally different.
The significance of this research is that by studying the tiny and extremely short phenomena of nanometer and femtosecond laser pointer, it not only helps to clarify some difficult mysteries in space physics, such as the high energy of staggered flight in stars and the universe. The origin of particles is also expected to be used as a small neutron source for nuclear fusion reactions in medical and industrial applications. The research results were published on the 15th in the British online magazine Scientific Reports.