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===<!--[[Image:red_ring.png|15px|left]]-->Featured article: [[Sintered regolith]]===
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===<!--[[Image:red_ring.png|15px|left]]-->Featured article: [[Helium]]===
[[Image:MLS1_Brick.GIF|160px|left]] Sintered [[regolith]] falls into the category of ceramic materials as sintering is the process most common to ceramics.  When bricks are made from clay on Earth, first the bricks are heated long enough and hot enough to drive out the water. Then the heating is increased to cause partial melting or vitrification which results in the edges of adjacent grains being bonded together once they have cooled. The unmelted particles provide a stable shape and size during the process which involves some shrinkage and a decrease in porosity.
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[[File:He-3 T620 01.svg|160px|left]]  
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'''Helium''' is a component of the solar wind, and hence is one of the volatiles found (in parts per million level) in Lunar regolith. It is a Noble gas in group 18 and is the second element in the Periodic Table of the Elements. This element has two stable isotopes: 3 and 4.  
  
Experiments in radiant heating of regolith simulant have been carried out by NASA Johnson Space Center and Lockheed Engineering & Sciences Co.([[Sintered regolith|read more]])
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Helium 3 is a rare isotope of the element Helium, consisting of a nucleus with two protons and one neutron.
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It has been proposed that <sup>3</sup>He might be a possible fuel for a [[Nuclear Fusion]] reactor to produce energy using the thermo-nuclear reaction (Deuterium-Helium-3):
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<sup>2</sup>H + <sup>3</sup>He -->  <sup>4</sup>He + <sup>1</sup>H<sup>+</sup>
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This reaction has the advantage over the more-commonly proposed Deuterium-Tritium  fusion reaction...([[Helium|read more]])
 
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<SMALL><STRONG>[[Featured articles|See all featured articles]]</STRONG> | [[Talk:Featured_articles|Nominate!]]</SMALL>
 
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Revision as of 04:39, 20 June 2019

Featured article: Helium

He-3 T620 01.svg

Helium is a component of the solar wind, and hence is one of the volatiles found (in parts per million level) in Lunar regolith. It is a Noble gas in group 18 and is the second element in the Periodic Table of the Elements. This element has two stable isotopes: 3 and 4.

Helium 3 is a rare isotope of the element Helium, consisting of a nucleus with two protons and one neutron.

It has been proposed that 3He might be a possible fuel for a Nuclear Fusion reactor to produce energy using the thermo-nuclear reaction (Deuterium-Helium-3):

2H + 3He --> 4He + 1H+

This reaction has the advantage over the more-commonly proposed Deuterium-Tritium fusion reaction...(read more)

See all featured articles | Nominate!