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	<title>Chemistry Blog &#187; psi</title>
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		<title>nuclear?</title>
		<link>http://www.chemistry-blog.com/2006/12/22/nuclear/</link>
		<comments>http://www.chemistry-blog.com/2006/12/22/nuclear/#comments</comments>
		<pubDate>Sat, 23 Dec 2006 05:04:59 +0000</pubDate>
		<dc:creator>psi</dc:creator>
				<category><![CDATA[nuclear chemistry]]></category>

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		<description><![CDATA[Like Albert, I&#8217;ve also been asked to fill in for Mitch while he&#8217;s gone. Since Mitch is a nuclear chemist, I wanted to do something related to that. Unfortunately, in the process, I realized that most of what I know about nuclear science, I learned from the Simpsons. Since I&#8217;ve never had a class in [...]]]></description>
			<content:encoded><![CDATA[<p>Like Albert, I&#8217;ve also been asked to fill in for Mitch while he&#8217;s gone.  Since Mitch is a nuclear chemist, I wanted to do something related to that.  Unfortunately, in the process, I realized that most of what I know about nuclear science, I learned from the Simpsons.  Since I&#8217;ve never had a class in nuclear chemistry, the extent of what I&#8217;ve learned about it in school is &#8220;There&#8217;s a hot spot by the sink, so don&#8217;t get too close if you want children.&#8221;  (The class was held in an old radiochemistry lab.)<br />
I wanted to take a picture of the <em>local</em> Van de Graaff accelerator, but it doesn&#8217;t look so exciting from the outside, so here is a more impressive-looking picture from the <a href="http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=27022" target="_blank">ESA</a>.<br />
<img src="http://www.chemistry-blog.com/blog-tandem.jpg" border="0" /><br />
Van de Graaff accelerators are used to cause nuclear reactions, producing radioactive isotopes, such as <sup>15</sup>O and <sup>13</sup>N.  They can also be used to produce neutron beams for spectroscopic use.  Neutron spectroscopy is pretty cool, for people interested in vibrational modes of crystals.<br />
For people like me who shudder at the mention of the word &#8220;phonon,&#8221; the nucleus is also involved in a more familiar type of spectroscopy: <a href="http://en.wikipedia.org/wiki/Nuclear_magnetic_resonance%22" target="_blank">NMR!!!</a>  Remember, NMR requires a magnetically active nucleus such as <sup>13</sup>C or <sup>1</sup>H.  (Not to be confused with a <em>radio</em>active nucleus like <sup>235</sup>U.)<br />
<img src="http://upload.wikimedia.org/wikipedia/commons/thumb/3/3b/HEUranium.jpg/200px-HEUranium.jpg" border="0" /><br />
Enjoy your time off, Mitch!</p>
<p><a href="http://coronene.blogspot.com/" target="_blank">Psi*Psi</a></p>
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