August 3, 2012 12:33
Image: White dwarfs have strong magnetic fields, which can occur due to new molecular bond.
Magnetic phenomena may be the secret ingredient to create strong bonds between the atoms in the stellar atmosphere. Computer models show that a hitherto unknown type of strong chemical bonds must generate strong magnetic fields of stars. If this effect is to reproduce in the laboratory, the "magnetic substance" can be used in quantum computers. Recall information about what AVC can be found on the Internet.
Chemists define two classes of strong molecular bonds: ionic bonds, in which electrons are transferred from one atom to another, and covalent bonds, in which electrons interact with all the atoms simultaneously. However, Trygve Helgaker, quantum chemistry from the University of Oslo and colleagues accidentally discovered a third mechanism of communication, when simulated the behavior of atoms under the influence of magnetic fields of more than 105 tesla — 10 000 times greater than the Earth's magnetic field. The results were published in the journal Science.
The team first tested how low (basic) energy state of a diatomic molecule of hydrogen is changed by a magnetic field. Gantelepodobnaya molecules are oriented parallel to the direction of the field, and the relationship became shorter and more stable, says Helgaker. When one of the electrons was transferred to the energy level, the relationship is usually broken, the molecule just turned so as to be across the field and remained intact.
"We always tell students that if you do so with the electron, the molecule splits — says Helgaker. — But here we see a new type of communication that causes the atoms to stick together. "
The team also reported that a similar effect should occur between atoms of helium, which usually do not create a connection between.