Like charges repel. So to overcome the repulsive force protons do need high energy to perform work against the force of repulsion. Hence high speed
The first step in the proton-proton chain of nuclear fusion is when two protons fuse to form deuterium, releasing a positron and a neutrino in the process.
Helium and a neutron: D + T --> He + n + 17.59 MeV
The simplest and easiest reaction to do is deuterium tritium fusion, this makes helium-4 and a free neutron.The next simplest is deuterium deuterium fusion, this can make any of 3 products: helium-4, helium-3 and a free neutron, or tritium and hydrogen.The hardest is multistep, hydrogen hydrogen fusion, this makes helium-2 which instantly beta decays to deuterium, followed by deuterium deuterium or deuterium tritium fusion.There are various other pathways too.
The most common fusion in the sun is two hydrogen atoms fusing to produce helium. There are different ways this can happen. Two deuterium atoms may fuse, or a deuterium atom may fuse with a tritium atom, or two tritium atoms may fuse. Since the half life of tritium is rather short, the overwhelming majority of these atoms are deuterium atoms. The commonest form of hydrogen, known as protium, does not take part in the process.
The distinguishing feature is that a brown dwarf gets hot enough to fuse deuterium (hydrogen-2), but not hot enough to fuse hydrogen-1.
..particles (nuclei) fuse together to form heavier nuclei. Initially, two protons fuse together (hydrogen atom nuclei) to form deuterium. These in turn may fuse with further protons, or with another deuterium nuclei to for a helium nuclei. As the heavier nuclei form, lots of energy is released.
Its mainly going to be Hydrogen nuclii. At the suns core, two protons fuse together (hydrogen atom nuclei) to form deuterium. These in turn may fuse with further protons, or with another deuterium nuclei to for a helium nuclei. As the heavier nuclei form, energy is released. Later on in the Stars life, fusion of the helium nuclii may take place a lot more often, as the preferred fuel of Hydrogen is depleted.
The atoms in the core of a star fuse together under the intense pressure, producing vast amounts of heat and energy.
The first step in the proton-proton chain of nuclear fusion is when two protons fuse to form deuterium, releasing a positron and a neutrino in the process.
..particles (nuclei) fuse together to form heavier nuclei. Initially, two protons fuse together (hydrogen atom nuclei) to form deuterium. These in turn may fuse with further protons, or with another deuterium nuclei to for a helium nuclei. As the heavier nuclei form, lots of energy is released.
Helium and a neutron: D + T --> He + n + 17.59 MeV
The basic reactions: First 2 hydrogen nuclei (protons) fuse to form deuterium, a hydrogen isotope (1 proton, 1 neutron). Deuterium then fuses with another proton to form a light helium isotope, helium3 (2 protons, 1 neutron. 2 helium3 nuclei fuse to form Helium4 (2 protons 2 neutrons), + 2 hydrogen nuclei (protons).
The simplest and easiest reaction to do is deuterium tritium fusion, this makes helium-4 and a free neutron.The next simplest is deuterium deuterium fusion, this can make any of 3 products: helium-4, helium-3 and a free neutron, or tritium and hydrogen.The hardest is multistep, hydrogen hydrogen fusion, this makes helium-2 which instantly beta decays to deuterium, followed by deuterium deuterium or deuterium tritium fusion.There are various other pathways too.
The most common fusion in the sun is two hydrogen atoms fusing to produce helium. There are different ways this can happen. Two deuterium atoms may fuse, or a deuterium atom may fuse with a tritium atom, or two tritium atoms may fuse. Since the half life of tritium is rather short, the overwhelming majority of these atoms are deuterium atoms. The commonest form of hydrogen, known as protium, does not take part in the process.
Helium and a neutron: D + T --> He + n + 17.59 MeV
the electromagnetic repulsion. they are both positively charged particles, and just like putting the south ends of a magnet together, they are actually repelled. what stops them from flying apart is the strong nuclear force. gravity is also an attractive force between them yet it is so weak that it is negligible when being compared to the electromagnetic repulsion.
The distinguishing feature is that a brown dwarf gets hot enough to fuse deuterium (hydrogen-2), but not hot enough to fuse hydrogen-1.