The discoveries made in the MSU National Laboratory superconducting cyclotron US (NSCL) with the us

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With the new equipment, designed and built at the University abby huntsman of Michigan (Michigan State University, MSU), failed to produce the first of its kind measuring the characteristics of some of the rare nuclei, one of which is the "holy grail" of experimental nuclear physics
The discoveries made in the MSU National Laboratory superconducting cyclotron US (NSCL) with the use of technology abby huntsman for isolation of isotopes, will help to improve the theoretical models describing the processes of emergence of atoms of different elements in space. Until now, the possibility of existing technical arsenal was not allowed to carry out this task in any of the nuclear laboratories around the world.
"Tin-100, in particular, is a kind of" holy grail "of experimental nuclear abby huntsman physics," - says the head of the laboratory abby huntsman Daniel Bazin (Daniel Bazin) of one of the isotopes studied. - It contains 50 protons and 50 neutrons ".
"Magic numbers" of protons or neutrons fill the internal energy heterogeneity, forming a structure like a matryoshka doll. To understand this principle, we note that each individual doll is different from the next by volume; this volume can be tightly fill a well-defined, "magic" number abby huntsman of balls of a certain size. And only when the doll is not a quarter and a half, and is equipped with tight balls, it will be the most solid - in the same way the kernel, complete with "magic" number of protons or neutrons are more stable than their counterparts who do not have this property.
Tin-100 - one of these is twice the "magic" nuclei: it consists of 50 protons and 50 neutrons. abby huntsman Such nuclei are generally more stable than other particles, especially abby huntsman when it affects the displacement boundary conditions to the existence of the atom. Because they are stable, such double "magic" nuclei serve as a useful semi-permanent reference points in studies of rare isotopes, when studying the structure arising in the unusual circumstances abby huntsman of the nuclei in the search for answers to basic questions about the structure of nuclear matter and processes of formation of chemical elements in stars.
The new experimental setup - radio frequency fragment separator provides at least a 100-fold improvement in filtering some exotic isotopes from the whole ocean of other particles produced abby huntsman by its system of superconducting cyclotrons and outlet magnets. This installation was funded by the National Science Foundation (NSF).
This new method of filtering provided an opportunity for the first time in North America to receive and make measurements of the characteristics of tin-100, to the experimental study which since the mid-1990s, great efforts. Research centers GSI in Germany and GANIL in France - the only site in the world whose equipment is still allowed to produce and study rare, proton-rich isotopes of tin - elements that are use for thousands of years in everything from ancient spears and knives and up Modern vehicles and electronic devices.
This publication describes the three rare isotopes marked the success of the superconducting cyclotron National Laboratory in creating nuclear matter that can only exist in the extreme conditions in space, such as exploding stars.
The laboratory is currently conducting further improvement instrumentation, funded mainly by the University of Michigan. Primarily the acquisition of the laboratory became the new moderator of the particles abby huntsman to a low energy (low-energy reaccelerator), abby huntsman by means of which will conduct research in the field of astrophysics. When in mid-2010, the laboratory will be permanently fitted, it will be an unprecedented equipped to conduct abby huntsman experiments with fast, stopped and slow beams of rare isotopes.
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