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Hand written #2 - Hunter Sapp 4073458 Astronomy 1...

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Hunter Sapp – 4073458 – Astronomy 1 – Wednesdays 5:00 Chapter 16, Question 7 Initially in the proton-proton chain of the conversion of hydrogen into helium begins with 4 hydrogen protons but ends with a single helium molecule. In the sun there is tons of free moving hydrogen protons, two of the four hydrogen collide in step one to create one hydrogen proton and one neutron. The neutron is created because when the protons collide the byproduct from the converting a proton is a positron that encounters a regular electron destroying both particles and in turn creating two gamma-ray photons that help sustain the Sun’s internal heat. The hydrogen neutron and proton remaining collide with a third hydrogen proton, the result being a helium isotope. This also releases another gamma-ray photon. The final step is when two helium isotopes collide, creating a different helium isotope containing two protons and two neutrons, the two extra hydrogen neutrons are then left over and are released to continue the process. So basically in the final step 4 hydrogen protons eventually create a single helium isotope. In the first step, other byproduct is a nearly mass less neutrino that is created from the conversion of
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This note was uploaded on 08/26/2011 for the course ASTRONOMY 1 taught by Professor Staff during the Spring '11 term at UCSB.

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Hand written #2 - Hunter Sapp 4073458 Astronomy 1...

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