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Title: Spallation reactions in shock waves at supernova explosions and related problems

Abstract

The isotopic anomalies of some extinct radionuclides testify to the outburst of a nearby supernova just before the collapse of the protosolar nebula, and to the fact that the supernova was Sn Ia, i.e. the carbon-detonation supernova. A key role of spallation reactions in the formation of isotopic anomalies in the primordial matter of the Solar System is revealed. It is conditioned by the diffusive acceleration of particles in the explosive shock waves, which leads to the amplification of rigidity of the energy spectrum of particles and its enrichment with heavier ions. The quantitative calculations of such isotopic anomalies of many elements are presented. It is well-grounded that the anomalous Xe-HL in meteoritic nanodiamonds was formed simultaneously with nanodiamonds themselves during the shock wave propagation at the Sn Ia explosion. The possible effects of shock wave fractionation of noble gases in the atmosphere of planets are considered. The origin of light elements Li, Be and B in spallation reactions, predicted by Fowler in the middle of the last century, is argued. All the investigated isotopic anomalies give the evidence for the extremely high magnetohydrodynamics (MHD) conditions at the initial stage of free expansion of the explosive shock wave from Snmore » Ia, which can be essential in solution of the problem of origin of cosmic rays. The specific iron-enriched matter of Sn Ia and its MHD-separation in turbulent processes must be taking into account in the models of origin of the Solar System.« less

Authors:
 [1]
  1. RAS, V.I. Vernadsky Institute of Geochemistry and Analytical Chemistry (Russian Federation)
Publication Date:
OSTI Identifier:
22126535
Resource Type:
Journal Article
Journal Name:
Physics of Atomic Nuclei
Additional Journal Information:
Journal Volume: 76; Journal Issue: 5; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7788
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CARBON; COSMIC RADIATION; FRACTIONATION; HEAVY IONS; MAGNETOHYDRODYNAMICS; MATHEMATICAL SOLUTIONS; PLANETARY ATMOSPHERES; RADIOISOTOPES; RARE GASES; SHOCK WAVES; SOLAR SYSTEM; SPALLATION; SUPERNOVAE

Citation Formats

Ustinova, G. K., E-mail: ustinova@dubna.net.ru. Spallation reactions in shock waves at supernova explosions and related problems. United States: N. p., 2013. Web. doi:10.1134/S1063778813050086.
Ustinova, G. K., E-mail: ustinova@dubna.net.ru. Spallation reactions in shock waves at supernova explosions and related problems. United States. doi:10.1134/S1063778813050086.
Ustinova, G. K., E-mail: ustinova@dubna.net.ru. Wed . "Spallation reactions in shock waves at supernova explosions and related problems". United States. doi:10.1134/S1063778813050086.
@article{osti_22126535,
title = {Spallation reactions in shock waves at supernova explosions and related problems},
author = {Ustinova, G. K., E-mail: ustinova@dubna.net.ru},
abstractNote = {The isotopic anomalies of some extinct radionuclides testify to the outburst of a nearby supernova just before the collapse of the protosolar nebula, and to the fact that the supernova was Sn Ia, i.e. the carbon-detonation supernova. A key role of spallation reactions in the formation of isotopic anomalies in the primordial matter of the Solar System is revealed. It is conditioned by the diffusive acceleration of particles in the explosive shock waves, which leads to the amplification of rigidity of the energy spectrum of particles and its enrichment with heavier ions. The quantitative calculations of such isotopic anomalies of many elements are presented. It is well-grounded that the anomalous Xe-HL in meteoritic nanodiamonds was formed simultaneously with nanodiamonds themselves during the shock wave propagation at the Sn Ia explosion. The possible effects of shock wave fractionation of noble gases in the atmosphere of planets are considered. The origin of light elements Li, Be and B in spallation reactions, predicted by Fowler in the middle of the last century, is argued. All the investigated isotopic anomalies give the evidence for the extremely high magnetohydrodynamics (MHD) conditions at the initial stage of free expansion of the explosive shock wave from Sn Ia, which can be essential in solution of the problem of origin of cosmic rays. The specific iron-enriched matter of Sn Ia and its MHD-separation in turbulent processes must be taking into account in the models of origin of the Solar System.},
doi = {10.1134/S1063778813050086},
journal = {Physics of Atomic Nuclei},
issn = {1063-7788},
number = 5,
volume = 76,
place = {United States},
year = {2013},
month = {5}
}