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symbo symbo
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7 years ago
Photodisintegration, the fissioning of iron nuclei into helium nuclei due to high energy gamma radiation, occurs only at the very end of the life of a massive star.  Why can this not occur earlier?  Each of the following answers is correct except one.  Which answer is incorrect?
A)   Iron nuclei do not exist in anything but trace amounts before this stage.
B)   Gamma radiation of sufficient energy is not produced before this stage.
C)   The fissioning of an iron nucleus requires energy, and the energy-rich environment that allows this to happen does not exist before this stage.
D)   Under the conditions of the previous stages of evolution, iron (26Fe) disappears as quickly as it is formed by combining with helium (4He) to produce zinc (30Zn).
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Discovering the Universe

Discovering the Universe


Edition: 7th
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papachulopapachulo
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7 years ago
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symbo Author
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7 years ago
Thanks for your help!!
mambah4
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Yesterday
Brilliant ツ
decibul
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2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
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