Uranium - Revision history

Michel Lamontagne at 19:44, 4 December 2020

2020-12-04T19:44:15Z

Michel Lamontagne at 19:41, 4 December 2020

2020-12-04T19:41:10Z

Michel Lamontagne at 19:34, 4 December 2020

2020-12-04T19:34:55Z

Michel Lamontagne at 19:31, 4 December 2020

2020-12-04T19:31:52Z

Michel Lamontagne: Created page with "{{element |float=right |elementName=Uranium |elementSymbol=U |protons=92 |abundance=0.0% }} Uranium, ''periodic table U'', is a metal. It's most common..."

2020-12-04T19:16:19Z

Created page with "{{element |float=right |elementName=Uranium |elementSymbol=U |protons=92 |abundance=0.0% }} Uranium, ''periodic table U'', is a metal. It's most common..."

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{{element
|float=right
|elementName=Uranium
|elementSymbol=U
|protons=92
|abundance=0.0%
}}
Uranium, ''[[Elements on Mars|periodic table]] U'', is a metal. It's most common isotope 238U has 146 neutrons. it's most important commercial isotope is 235U, that is radioactive with a half life of 7.04×108 years 0,72%.

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==References==
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 Uranium used in nuclear reactors is usually enriched in  <sup>235</sup>U to increase its radioactivity to the point it can sustain a nuclear chain reaction. Commercial nuclear power plants use fuel that is typically enriched to around 3% <sup>235</sup>U.
-Uranium's average concentration in the Earth's crust is (depending on the reference) 2 to 4 parts per million, or about 40 times as abundant as silver.  If Uranium can be mined and enriched on Mars, it would represent an excellent energy source for a Martian settlement.  One kilogram of uranium-235 can theoretically produce about 20 terajoules of energy (2×10<sup>13</sup> joules), assuming complete fission; as much energy as 1.5 million kilograms (1,500 tonnes) of coal.  Breeder reactors can convert  <sup>238</sup>U into Plutonium, than can in turn produce energy through added fission reactions, increasing the overall burn rate of the nuclear fuel.
+Uranium's average concentration in the Earth's crust is (depending on the reference) 2 to 4 parts per million, or about 40 times as abundant as silver.  If Uranium can be mined and enriched on Mars, it would represent an excellent energy source for a Martian settlement.  One kilogram of uranium-235 can theoretically produce about 20 terajoules of energy (2×10<sup>13</sup> joules), assuming complete fission; as much energy as 1.5 million kilograms (1,500 tonnes) of coal.  Breeder reactors can convert  <sup>238</sup>U into Plutonium, than can in turn produce energy through added fission reactions, increasing the overall burn rate (or [[w:Burnup|Burnup]]) of the nuclear fuel.
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 |abundance=0.0%
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-Uranium, ''[[Elements on Mars|periodic table]] U'', is a metal.  Its most common isotope is <sup>238</sup>U has 146 neutrons, with a abundance of 99% of all uranium. It is unstable and slightly radioactive, with a half life of 4.468×10<sup>9</sup> years (4.5 billion hears). The most important commercial isotope of uranium is <sup>235</sup>U, that is radioactive with a half life of 7.04×10<sup>8</sup> years.  <sup>235</sup>U represents  0,72% of all Uranium.
+Uranium, ''[[Elements on Mars|periodic table]] U'', is a metal.  Its most common isotope is <sup>238</sup>U with 146 neutrons and an abundance of 99% of all Uranium. It is unstable and slightly radioactive, with a half life of 4.468×10<sup>9</sup> years (4.5 billion hears). The most important commercial isotope of uranium is <sup>235</sup>U, that is more radioactive with a half life of 7.04×10<sup>8</sup> years.  <sup>235</sup>U represents  0,72% of all Uranium.
 Uranium used in nuclear reactors is usually enriched in  <sup>235</sup>U to increase its radioactivity to the point it can sustain a nuclear chain reaction. Commercial nuclear power plants use fuel that is typically enriched to around 3% <sup>235</sup>U.
-Uranium's average concentration in the Earth's crust is (depending on the reference) 2 to 4 parts per million, or about 40 times as abundant as silver.  If Uranium can be mined and enriched on Mars, it would represent an excellent energy source for a Martian settlement.
+Uranium's average concentration in the Earth's crust is (depending on the reference) 2 to 4 parts per million, or about 40 times as abundant as silver.  If Uranium can be mined and enriched on Mars, it would represent an excellent energy source for a Martian settlement.  One kilogram of uranium-235 can theoretically produce about 20 terajoules of energy (2×10<sup>13</sup> joules), assuming complete fission; as much energy as 1.5 million kilograms (1,500 tonnes) of coal.  Breeder reactors can convert  <sup>238</sup>U into Plutonium, than can in turn produce energy through added fission reactions, increasing the overall burn rate of the nuclear fuel.
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 |abundance=0.0%
 }}
-Uranium, ''[[Elements on Mars|periodic table]] U'', is a metal.  It's most common isotope <sup>238</sup>U has 146 neutrons.  <sup>238</sup>U is the most common isotope, representing 99% of all uranium. It is unstable and slightly radioactive, with a half life of 4.468×10<sup>9</sup> years (4.5 billion hears). The most important commercial isotope of uranium is <sup>235</sup>U, that is radioactive with a half life of 7.04×10<sup>8</sup> years.  <sup>235</sup>U represents  0,72% of all uranium.
+Uranium, ''[[Elements on Mars|periodic table]] U'', is a metal.  Its most common isotope is <sup>238</sup>U has 146 neutrons, with a abundance of 99% of all uranium. It is unstable and slightly radioactive, with a half life of 4.468×10<sup>9</sup> years (4.5 billion hears). The most important commercial isotope of uranium is <sup>235</sup>U, that is radioactive with a half life of 7.04×10<sup>8</sup> years.  <sup>235</sup>U represents  0,72% of all Uranium.
 Uranium used in nuclear reactors is usually enriched in  <sup>235</sup>U to increase its radioactivity to the point it can sustain a nuclear chain reaction. Commercial nuclear power plants use fuel that is typically enriched to around 3% <sup>235</sup>U.
-Uranium's average concentration in the Earth's crust is (depending on the reference) 2 to 4 parts per million, or about 40 times as abundant as silver.
+Uranium's average concentration in the Earth's crust is (depending on the reference) 2 to 4 parts per million, or about 40 times as abundant as silver.  If Uranium can be mined and enriched on Mars, it would represent an excellent energy source for a Martian settlement.
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