spontaneous fission

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spontaneous fission [spän′tā·nē·əs ′fi·shən]

(nuclear physics)

Nuclear fission in which no particles or photons enter the nucleus from the outside.

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No references found			Ramayya of Vanderbilt University in Nashville and his collaborators have discovered that, in addition to normal spontaneous fission, the isotope californium-252 occasionally splits in two in such a way that no neutrons are released. Rare fission processes by Peterson, Ivars / Science News Arradiance will apply this technology to develop a practical, compact and efficient detector of the "fast" neutrons that result from the spontaneous fission of Special Nuclear Materials. Arradiance Demonstrates First Plastic Microchannel Plate by Business Wire The researchers also look for evidence of new isotopes, in which the number of neutrons present in a nucleus differs from known varieties, and for traces of spontaneous fission, in which a newly synthesized nucleus immediately splits into two pieces. A chemical glance at short-lived elements by Peterson, Ivars / Science News			sponge rubber sponger spongework spongiform encephalopathy Spongiidae Spongillidae spongin spongioblast spongiocyte Spongiomorphida Spongiomorphidae spongocoel spongolite spongolith spongy spongy mesophyll spongy parenchyma sponson mount sponsor sponsored link spontaneous spontaneous abortion spontaneous amputation Spontaneous Combustion Spontaneous Emission spontaneous fission spontaneous generation spontaneous heating spontaneous ignition spontaneous liquefaction spontaneous magnetization Spontaneous Materialism spontaneous mutation spontaneous nucleation Spontaneous Phenomena spontaneous pneumothorax spontaneous polarization spontaneous process spontaneous symmetry breaking spontaneous-potential well logging Spontini, Gaspare Spontini, Gasparo Luigi Pacifico spoo spoof spoofing spooge spook spool spool file spool-type roller conveyor spooler			Spontaneous bacterial peritonitis Spontaneous bacterial peritonitis Spontaneous Basilar-Membrane Oscillation Spontaneous Bilateral Perirenal Haematoma Spontaneous Breathing Trial Spontaneous chiral symmetry breaking spontaneous combustion spontaneous combustion spontaneous combustion Spontaneous combustion (combustion) Spontaneous combustion (combustion) Spontaneous Current Liabilities Spontaneous Current Liability spontaneous delivery spontaneous delivery spontaneous delivery spontaneous delivery spontaneous delivery Spontaneous Dynamic Field Exercise Spontaneous ecchymoses Spontaneous ecchymoses Spontaneous ecchymoses Spontaneous ecchymoses Spontaneous ejaculation Spontaneous ejaculation Spontaneous ejaculation Spontaneous emission spontaneous evolution Spontaneous Excitatory Junction Potentials Spontaneous exclamation spontaneous fission spontaneous fracture spontaneous fracture spontaneous fracture spontaneous fracture spontaneous gangrene of newborn spontaneous generation spontaneous generation spontaneous generation Spontaneous Genome Degeneration Syndrome Spontaneous healing Spontaneous healing Spontaneous Heart Rate Turbulence spontaneous heating Spontaneous human combustion Spontaneous Human Explosion spontaneous hypoglycemia spontaneous hypoglycemia spontaneous hypoglycemia spontaneous ignition Spontaneous Ignition Temperature spontaneous inclination spontaneous intermittent mandatory ventilation Spontaneous internal combustion Spontaneous internal combustion spontaneous internal hemorrhage spontaneous internal hemorrhage spontaneous internal hemorrhage spontaneous internal hemorrhage Spontaneous Intestinal Perforation Spontaneous Intracranial Hypotension Headache

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