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						<h1 itemprop="headline">Studenterkollokvium, Nikolaj Klinkby: Velocity Map Imaging</h1>
						
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												Electron detachment image from Cesium anion irradiated by light
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									<h2 class="screenreader-only">Oplysninger om arrangementet</h2>

									
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														Fredag 17. marts 2023,
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														&nbsp;kl. 13:15 -  14:00
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													<p class="news-event__info__item__ical-link"><a href="/aktuelt/nyhed/artikel/studenterkollokvium-nikolaj-klinkby-velocity-map-imaging?tx_news_pi1%5Bformat%5D=ical&amp;type=9819&amp;cHash=c4b0a2df6740e9b7d2bcaab59a5befd1">Tilføj til kalender</a></p>
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														<p>Fys. Aud.</p>
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														<span itemprop="name">Ann-Berit Porse Stærkær</span>
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									<p><em>Supervisor: Marcel Mudrich</em></p>
<p>At night looking at the green Aurora Borealis, one might wonder how such a phenomenon occurs. It turns out to be caused by reactions of oxygen, elec-trons and light. A powerful experimental detection technique to understand reactions such as this is Velocity Map Imaging (VMI) of charged particles. It has roots going back to the 1960s, but the first implementation was in the late 1990s. Today the technique is widely used in molecular and physical chemistry, as well as by several experimental groups at Aarhus University. The working principle of VMI: crush the reaction onto a two-dimensional plane, which captures an ”image” of the reactants. From the image, retriev-ing information about the reaction is no trivial task. Mathematically going from a two-dimensional image to a three-dimensional image can be done by an Abel inversion, which is implemented in various ways in the field of VMI.</p>
								
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