= Rudolf Mössbauer
{c}
{tag=Physicist}
{wiki}
= Rudolf Ludwig Mössbauer
{c}
{synonym}
= Rudolf L. Mössbauer
{c}
{synonym}
= R. L. Mössbauer
{c}
{synonym}
<Rudolf Mössbauer> discovered that some <gamma ray> emission and absorption events in a solid occur without changing the crystal's <phonon> state. The <momentum> can then be transferred to the whole lattice, with an effective recoil <energy> far smaller than for a free nucleus. This permits extremely narrow nuclear emission and absorption lines to overlap, producing the <Mössbauer effect>. The narrow resonance makes very small energy shifts observable, including shifts due to the local electronic and magnetic environment of a nucleus.<Recoilless nuclear resonance absorption of gamma radiation by Rudolf Ludwig Mössbauer>[Nobel lecture, recoil-free fraction and nuclear resonance]{ref}
A <physicist>.https://www.nobelprize.org/laureate/76[Independent professional profile]{ref}https://www.e15.ph.tum.de/staff/professors/prof_moessbauer/index.html[Independent professional profile]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Rudolf%20L.%20Moessbauer%201962.png?width=250]
{title=Portrait of <Rudolf Mössbauer>}
{description=Unknown photographer; The Big T 1962, California Institute of Technology yearbook; existing Commons extract. https://commons.wikimedia.org/wiki/File:Rudolf_L._Moessbauer_1962.png[Commons PD-US-no-notice claim: US publication during 1931–1977 without notice. Other jurisdictions may retain protection.], via Wikimedia Commons.}
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{width=250}
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