helium flash

n (Astronomy) astronomy the explosive burning of helium in the case of a star of low mass that occurs when the core is so dense that the matter has become degenerate. The burning causes a rapid rise in temperature until it is so high that the gas ceases to be degenerate, after which there is a rapid expansion

Translations

flash dell'elio

helium flash

The explosive onset of helium burning (by the triple alpha process) in the degenerate core of an evolved star (a giant) when the core temperature reaches about 10⁸ kelvin. The sudden increase in energy production causes a rapid rise in temperature, in turn increasing the reaction rate, but this runaway process eventually removes the degeneracy and the reaction once again becomes sensitive to the gas pressure. The helium flash occurs in stars of about one to two solar masses.

helium flash

[′hē·lē·əm ‚flash] (astronomy) The onset of runaway helium burning in the degenerate core of a red giant star and the resulting expansion of the core.

单词	helium flash
释义	helium flash helium flash n (Astronomy) astronomy the explosive burning of helium in the case of a star of low mass that occurs when the core is so dense that the matter has become degenerate. The burning causes a rapid rise in temperature until it is so high that the gas ceases to be degenerate, after which there is a rapid expansion Translations flash dell'elio helium flash helium flash The explosive onset of helium burning (by the triple alpha process) in the degenerate core of an evolved star (a giant) when the core temperature reaches about 10⁸ kelvin. The sudden increase in energy production causes a rapid rise in temperature, in turn increasing the reaction rate, but this runaway process eventually removes the degeneracy and the reaction once again becomes sensitive to the gas pressure. The helium flash occurs in stars of about one to two solar masses. helium flash [′hē·lē·əm ‚flash] (astronomy) The onset of runaway helium burning in the degenerate core of a red giant star and the resulting expansion of the core.
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