Temat: nuclear physics - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The “Renaissance” in Nuclear Physics: Low-Energy Nuclear Reactions and Transmutations
Autorzy:: Di Sia, Paolo
Powiązania:: https://bibliotekanauki.pl/articles/1158761.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Biot-Savart law
Classical physics
Low-energy nuclear reactions
Magnetic attraction
Nuclear binding energies
Nuclear physics
Transmutations
Opis:: Nuclear structure theory has recently undergone an unexpected “renaissance” that can be attributed to two factors: (a) Since 1989, experimental findings have indicated isotopic anomalies in “chemical systems” at energies well below the expected ~10 MeV nuclear level. (b) Since 2007, remarkable ab initio super-computer calculations of nuclear properties have been made under the assumption that nucleons have well-defined intranuclear positions (x ≤ 2 fm). Assuming a magnetic structure of nucleons consistent with classical physics, we have made related lattice calculations of nuclear binding energies and magnetic moments. Our results compare favorably with results from other Copenhagen-style nuclear models.
Źródło:: World Scientific News; 2018, 114; 195-207
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Digital nuclear shell model
Autorzy:: Kurić, L.
Powiązania:: https://bibliotekanauki.pl/articles/412392.pdf
Data publikacji:: 2014
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: nuclear physics
shell model
magic number of nucleons
Pascal Triangle
Opis:: The subject of this thesis is a digital approach to the investigation of the digital basis of digital nuclear shell model. The shell model is partly analogous to the atomic shell model which describes the arrangement of electrons in an atom, in that a filled shell results in greater stability. When adding nucleons to a nucleus, there are certain points where the binding energy of the next nucleon is significantly less than the last one. Magic numbers of nucleons: 2, 8, 20, 28, 50, 82, 126 which are more tightly bound than the next higher number, is the origin of the shell model. “In a three-dimensional harmonic oscillator the total degeneracy at level n is [wzór]. Due to the spin, the degeneracy is doubled and is (n+1)(n+2). Thus the magic numbers would be [wzór] for all integer k. This gives the following magic numbers: 2,8,20,40,70,112..., which agree with experiment only in the first three entries. These numbers are twice the tetrahedral numbers (1,4,10,20,35,56...) from the Pascal Triangle”. http://en.wikipedia.org/wiki/Nuclear_shell_model. The digital mechanism of shell model have been analyzed by the application of cybernetic methods, information theory and system theory, respectively. This paper is to report that we discovered new methods for development of the new technologies in nuclear physics and chemistry. It is about the most advanced digital technology which is based on program, cybernetics and informational systems and laws. The results in practical application of the new technology could be useful in physics, chemistry, bioinformatics, and other natural sciences.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2014, 13, 2; 160-173
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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