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| Titel |
Solid charged-core model of ball lightning |
| VerfasserIn |
D. B. Muldrew |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 28, no. 1 ; Nr. 28, no. 1 (2010-01-22), S.223-232 |
| Datensatznummer |
250016757
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| Publikation (Nr.) |
 copernicus.org/angeo-28-223-2010.pdf |
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| Zusammenfassung |
| In this study, ball lightning (BL) is assumed to have a
solid, positively-charged core. According to this underlying assumption, the
core is surrounded by a thin electron layer with a charge nearly equal in
magnitude to that of the core. A vacuum exists between the core and the
electron layer containing an intense electromagnetic (EM) field which is
reflected and guided by the electron layer. The microwave EM field applies a
ponderomotive force (radiation pressure) to the electrons preventing them
from falling into the core. The energetic electrons ionize the air next to
the electron layer forming a neutral plasma layer. The electric-field
distributions and their associated frequencies in the ball are determined by
applying boundary conditions to a differential equation given by Stratton
(1941). It is then shown that the electron and plasma layers are
sufficiently thick and dense to completely trap and guide the EM field. This
model of BL is exceptional in that it can explain all or nearly all of the
peculiar characteristics of BL. The ES energy associated with the core
charge can be extremely large which can explain the observations that
occasionally BL contains enormous energy. The mass of the core prevents the
BL from rising like a helium-filled balloon – a problem with most plasma
and burning-gas models. The positively charged core keeps the negatively
charged electron layer from diffusing away, i.e. it holds the ball together;
other models do not have a mechanism to do this. The high electrical charges
on the core and in the electron layer explains why some people have been
electrocuted by BL. Experiments indicate that BL radiates microwaves upon
exploding and this is consistent with the model. The fact that this novel
model of BL can explain these and other observations is strong evidence that
the model should be taken seriously. |
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