How Does ATR Work? | Attenuated Total Reflectance (atr)

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When the beam hits the interface between the crystal and the sample, it undergoes total internal reflection, creating an <a href="" target="_blank">evanescent wave</a>. This wave penetrates a few micrometers into the sample, allowing for the collection of spectral data. The depth of penetration depends on the wavelength of the IR light and the refractive indices of both the crystal and the sample.</div></div> </div> <hr /> <h3 class="rq-heading">Frequently asked queries:</h3> <div class="qa-container"> <div class="qa-item"> <a href="https://catalysis.blog/knowledgebase/what-is-attenuated-total-reflectance-atr" title="What is Attenuated Total Reflectance (ATR)?">What is Attenuated Total Reflectance (ATR)?</a> </div> <div class="qa-item"> <a href="https://catalysis.blog/knowledgebase/how-does-atr-work" title="How Does ATR Work?">How Does ATR Work?</a> </div> <div class="qa-item"> <a href="https://catalysis.blog/knowledgebase/why-is-atr-important-in-catalysis" title="Why is ATR Important in Catalysis?">Why is ATR Important in Catalysis?</a> </div> <div class="qa-item"> <a href="https://catalysis.blog/knowledgebase/what-are-the-common-applications-of-atr-in-catalysis" title="What Are the Common Applications of ATR in Catalysis?">What Are the Common 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How Does ATR Work? | Attenuated Total Reflectance (atr)