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  1. 18. Mai 2024 · Relative Energieproduktion für den Proton-Proton- (PP), CNO- und Triple-α -Fusionsprozesse in Abhängigkeit von der Temperatur. Bei Temperaturen wie im Kern der Sonne ist der PP-Prozess dominant. Achtung: Temperaturskala ist fehlerhaft!

    • Kernfusion

      Als Kernfusion werden Kernreaktionen bezeichnet, bei denen...

  2. 30. Mai 2024 · The Carbon-Nitrogen-Oxygen (CNO) cycle is fundamental to the process of hydrogen burning in stars, serving as a pivotal mechanism. At its core, the primary reaction involves the radiative capture of a proton by 12 C, crucially influencing the isotopic ratio of 12 C to 13 C observed in celestial bodies, including our Solar System.

  3. Vor 2 Tagen · The proton–proton chain reaction, branch I, dominates in stars the size of the Sun or smaller. The CNO cycle dominates in stars heavier than the Sun. An important fusion process is the stellar nucleosynthesis that powers stars, including the Sun. In the 20th century, it was recognized that the energy released from nuclear fusion ...

  4. Vor 4 Tagen · Course description. Aspects of Nuclear Physics and Astrophysics: * Solar System abundances; * HR diagram; * Stellar evolution of single stars; * Binary stellar systems; * Review of nuclear properties (masses, binding energies,shell structure); * Overview of nuclear reactions.

  5. 23. Mai 2024 · How does the CNO cycle differ from the proton-proton chain? The CNO cycle uses carbon, nitrogen, and oxygen as catalysts to convert hydrogen into helium, while the proton-proton chain fuses ...

  6. 21. Mai 2024 · Fusion reactions are of two basic types: (1) those that preserve the number of protons and neutrons and (2) those that involve a conversion between protons and neutrons. Reactions of the first type are most important for practical fusion energy production, whereas those of the second type are crucial to the initiation of star burning.

  7. 12. Mai 2024 · Potential functionalization of the PP chain and subsequent crosslinking might result in a polymer network serving as a precursor for aerogel fabrication with enhanced structural stability. Moreover, it was shown that PP crosslinking results in improved mechanical [ 32 , 33 ].