05.02.2015 Views

What is synchrotron radiation?

What is synchrotron radiation?

What is synchrotron radiation?

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<strong>What</strong> <strong>is</strong> X-ray absorption fine structures (XAFS) <br />

• As core electron <strong>is</strong> excited with hv the threshold<br />

(E o ), it <strong>is</strong> excited to a final state defined by the<br />

chemical environment, which modulates the<br />

absorption coefficient relative to that of a free<br />

atom. Th<strong>is</strong> modulation <strong>is</strong> known the XAFS,<br />

• XAFS contains all the information about the local<br />

structure and bonding of the absorbing atom<br />

• XAFS study requires a tunable X-ray source –<br />

<strong>synchrotron</strong> <strong>radiation</strong><br />

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