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Ultra-strong X-ray bombardment of metal to make transparent aluminum According to the report of the "Daily Science" website in the United States, scientists at the University of Oxford in the UK used the most powerful soft X-ray laser in the world to bombard metal to make transparent aluminum. The results of this research may have implications for planetary science and the use of nuclear fusion energy. Related papers were published in the journal Nature Physics. Transparent aluminum had only existed in science fiction before, and was famous all over the world because of the movie "Star Trek 4". An international research team led by Oxford University scientists focused all energy on a point smaller than 1 / 20th of the thickness of human hair, using a free electron laser device (FLASH) to generate short pulses that bombarded the core electrons of each aluminum atom in the sample , Without destroying the crystal structure in the metal, so that the aluminum metal becomes almost transparent under the condition of extreme ultraviolet radiation. This shows that a very strong X-ray source can generate new material states. But this effect can only last for a very short time, about 40 femtoseconds. Justin Walker of the College of Physics at Oxford University said: "What we are developing is a new state of matter that no one has ever been involved in. Transparent aluminum is just the beginning. The physical properties of the material we are developing are closely related to the conditions inside large planets; we It is also hoped that through the study of this material, the generation process of small stars that also require high-intensity laser implosion excitation can be more clearly understood; one day, the energy of nuclear fusion can also be used on Earth. "Professor Walker said:" The extraordinary thing about our experiment is that this single step of using high-intensity lasers converts ordinary aluminum into a new state of material. In some specific aspects, it behaves as if we have converted each aluminum atom into a silicon atom. It's as magical as you find that you can use light sources to convert lead into gold! "This discovery is made possible by the development of new radiation sources that are 10 billion times brighter than any synchrotron in the world. The Free Electron Laser Device (FLASH) at the center of the Electron Synchrotron in Hamburg, Germany, can produce extremely short soft X-ray pulses. The energy of each pulse is stronger than a power plant that can supply an entire city of electricity. The researchers firmly believe that this actinic ionization method is an ideal way to develop similar new-state matter, which will also provide effective help for further research in different fields such as planetary science, astrophysics, and the use of nuclear fusion energy.