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In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons). The difference in mass between the reactants and products is manifested as the release of large amounts of energy. This difference in mass arises due to the difference in atomic "binding energy" between the atomic nuclei before and after the reaction. Fusion is the process that powers active or "main sequence" stars, or other high magnitude stars.
A fusion process that produces a nucleus lighter than iron-56 or nickel-62 will generally yield a net energy release. These elements have the smallest mass per nucleon and the largest binding energy per nucleon, respectively. Fusion of light elements toward these releases energy (an exothermic process), while a fusion producing nuclei heavier than these elements will result in energy retained by the resulting nucleons, and the resulting reaction is endothermic. The opposite is true for the reverse process, nuclear fission. This means that the lighter elements, such as hydrogen and helium, are in general more fusible; while the heavier elements, such as uranium, thorium and plutonium, are more fissionable. The extreme astrophysical event of a supernova can produce enough energy to fuse nuclei into elements heavier than iron.
In 1920, Arthur Eddington suggested hydrogen-helium fusion could be the primary source of stellar energy. Quantum tunneling was discovered by Friedrich Hund in 1929, and shortly afterwards Robert Atkinson and Fritz Houtermans used the measured masses of light elements to show that large amounts of energy could be released by fusing small nuclei. Building on the early experiments in nuclear transmutation by Ernest Rutherford, laboratory fusion of hydrogen isotopes was accomplished by Mark Oliphant in 1932. In the remainder of that decade, the theory of the main cycle of nuclear fusion in stars were worked out by Hans Bethe. Research into fusion for military purposes began in the early 1940s as part of the Manhattan Project. Fusion was accomplished in 1951 with the Greenhouse Item nuclear test. Nuclear fusion on a large scale in an explosion was first carried out on November 1, 1952, in the Ivy Mike hydrogen bomb test.
Research into developing controlled thermonuclear fusion for civil purposes began in earnest in the 1950s, and it continues to this day.
Edit 7/13: Sale pending
I have ten boxes of Federal Fusion 30-30 ammo for sale. These are 20rnd boxes and the bullet is a 150gr in weight. I am asking $14 cash per box or $125 cash for all 10 boxes. Face to face only, no shipping (including to Lebanon, PA). I will meet buyer near Wilsonville...
Volquartsen custom Fusion in a McMillan Stock Lightly used Excellent Cond. I own 2 of them & really love them -They're my favorite 17 caliber - offered up since its not getting used ... GETS 1/2" -1 " groups at 100 yds. shot some 1/4 " groups but a consistent lot # is required to achieve it. In...
$100.00 For sale - Umarex Fusion .177 PCP conversion. This conversion was done by TexasAir. Comes with pump, some pellets and targets. Has Umarex 4x32 Scope. Very tight groupings at 30-Yards. Shoreline, WA
Comp-Tac Minotaur MTAC Holster with 4" 1911 body. Fits Kimber procary and similar sized 1911's Used but in VG condition $40
Fusion Pro grade 1911 rear sight, standard novak cut new in package.
Nice rail gun with gun Cote finish. Fit and finish is amazing, trigger is super sweet, has flat trigger, tactical big mag release, ambi safety. All internals are billet on this gun.slide is like glass. Can text or email pics
I have two 500 count lots of 62 gr sp bullets. These are pulled bullets, but you wouldn't know by looking at them.
The first lot is 62 gr fusion. These are the same bullets used in 223 Fusion and Fusion MSR. These have been tumbled and are the shiny ones in the picture below.
The second lot...