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Atomic line broadening by thermal energy fluctuations in stellar atmospheres and plasma diagnostics
OCTAVIO CARDONA NUÑEZ
Acceso Abierto
Atribución-NoComercial-SinDerivadas
Atomic processes
Line:profiles
Stars:atmospheres
A new method for finding the line widths of atomic lines produced by thermal energy fluctuations in a gaseous system is developed assuming that the atomic linear density change in the energy of the levels is equal to the linear density of the energy fluctuations per degree of freedom. A formula is derived for the atomic line widths that depends on temperature, the cubic root of the total number density of particles in the system, and on the sum of the squares of the principal quantum numbers of the states that participate in the transitions that produce the lines. The calculated widths agree well with the published experimental and theoretical values. This formula will be useful for directly diagnosing the physical state of stellar atmospheres and plasmas.
Astrophysics
2011-03
Artículo
Inglés
Estudiantes
Investigadores
Público en general
Cardona, O., (2011), Atomic line broadening by thermal energy fluctuations in stellar atmospheres and plasma diagnostics, Astrophysics, Vol. 54(1):75-86
ASTRONOMÍA Y ASTROFÍSICA
Versión aceptada
acceptedVersion - Versión aceptada
Aparece en las colecciones: Artículos de Astrofísica

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