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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-24 4:20 |
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Conference: Bucharest University Faculty of Physics 2008 Meeting
Section: Nuclear and Elementary Particles Physics
Title:
From nuclear matter to strange quark matter, some characteristics of the interactions in ordinary matter
Authors:
I. Lazanu (1), S. Lazanu (2), M. Chera (1), R. Iordanescu (1), C. Nita (1)
Affiliation:
(1) University of Bucharest, Faculty of Physics, POBox MG-11, Bucharest-Magurele, Romania
(2) National Institute for Materials Physics, POBox MG-7,
Bucharest-Măgurele, Romania
E-mail
ionel.lazanu@g.unibuc.ro
Keywords:
strange quark matter; stability; interactions
Abstract:
The possibility of existence of new forms of matter absolutely stable or stable only in respect to strong decays has been predicted by various authors many years ago and considerable attention is paid now both to theoretical and experimental investigations.In this contribution, different new forms of existence of matter are considered: superheavy nuclei (exotic or not), in other (A, Z) regions; nuclei with hadronic components or existing as strange quark matter (SQM) in the form of massive multiquark clusters - strangelets. Aspects associated to their mass, radius, electrical charge, strangeness, stability are discussed.For all forms of matter, charge neutrality is assured by electrons, analogous to the case of atoms. For a given radius, their net core charge has an upper, critic limit caused by the virtual and real pairs due to vacuum polarisation and to spontaneous formation of e+e- pairs in subcritical electric fields. The peculiarities of their interactions with ordinary matter - ionization and nuclear effects are investigated. The “ping-pong” mechanism of enhanced probability for reactions at low energy, when the target nucleus is implanted in condensed matter, is suggested as a possibility to discriminate between ordinary and strange matter.
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