How is americium made
Americium, At the, Element of the group of actinides of the periodic table, atomic number 95. It is a TransuraneElement and does not occur in nature. Americium has the electron configuration [Rn] 5f77s2 and is radioactive. Up to now 14 isotopes with the mass numbers 232, 234, 237-247 are known. Americium is produced by artificial conversion of elements, e.g. by bombarding plutonium with neutrons in a reactor:
This isotope is an α-emitter and goes into the long-lived neptunium isotope with a half-life of 432.6a
above. The isotope
goes into two isomers of the isotope when irradiated with neutrons
via: a β-emitter with a half-life of 16h and an α-emitter with a half-life of 141a. The isotope
that is characterized by repeated neutron uptake
can be obtained is an α-emitter with a half-life of 7370a and thus the most stable of the americium isotopes known to date. [AFM]
Americium 1: Important isotopes.
|241At the||0||241,056823||432.2 a||Tracer|
|243At the||0||243,061375||7,37×103 a||NMR|
Americium 2: General, chemical and solid-state physical properties.
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