<p>So in the sun's core, gamma rays are produced and right away, in the few milimetters, compton scattering happens.</p>
<p>As I understand the compton effect, gamma ray will first collide with free electron, and for the first collision, another gamma ray will be produced(from old one through scattering) - though this gamma ray will have a little bit longer wavelength(though, the difference in wavelengths are so small that new photon is still gamma ray. after so many scattering in the core, at some point, after <code>x</code> collisions, the photon will end up being <code>x-ray</code>.</p>
<p><strong>Question 1:</strong> Is the above logic right ?</p>
<p><strong>Question 2:</strong> do gamma rays escape the core and move into radiative zone ? or only some very small part of gamma rays reach radiative zone ? or all the photons that reach from core to radiative, they're already x-rays ?</p>

CC BY-SA 4.0
2023-05-01T13:14:15.763Z
BTW, stellar fusion doesn't only release energy as gamma photons. A substantial amount of the energy is released as the kinetic energy of the fusion products.
PM 2Ring
CC BY-SA 4.0
2023-05-01T13:46:47.413Z
Well fusion itself only produces gamma rays in the sun’s core. Thats what everybody says. Though, due to compton scattering, you go to bigger wavelength photons.
Giorgi Lagidze
CC BY-SA 4.0
2023-05-01T14:16:18.270Z
Giorgi, only part of the fusion output energy is in the form of photons. I have some details (from Wikipedia) here: https://astronomy.stackexchange.com/a/48281/16685
PM 2Ring
<the-sun><galaxy><universe><radiation>
sun - do gamma rays reach radiative zone
Giorgi Lagidze
# sun - do gamma rays reach radiative zone

(Asked by: username_0 on 2023-04-30)

So in the sun's core, gamma rays are produced and right away, in the few milimetters, compton scattering happens.

As I understand the compton effect, gamma ray will first collide with free electron, and for the first collision, another gamma ray will be produced(from old one through scattering) - though this gamma ray will have a little bit longer wavelength(though, the difference in wavelengths are so small that new photon is still gamma ray. after so many scattering in the core, at some point, after `x` collisions, the photon will end up being `x-ray`.

**Question 1:** Is the above logic right ?

**Question 2:** do gamma rays escape the core and move into radiative zone ? or only some very small part of gamma rays reach radiative zone ? or all the photons that reach from core to radiative, they're already x-rays ?

**Tags:** the-sun, galaxy, universe, radiation
> **Comments:**
> **username_1**: BTW, stellar fusion doesn't only release energy as gamma photons. A substantial amount of the energy is released as the kinetic energy of the fusion products.  
> **username_0**: Well fusion itself only produces gamma rays in the sun’s core. Thats what everybody says. Though, due to compton scattering, you go to bigger wavelength photons.  
> **username_1**: Giorgi, only part of the fusion output energy is in the form of photons. I have some details (from Wikipedia) here: https://astronomy.stackexchange.com/a/48281/16685  

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