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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Alfred Nier</span></h1>
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<p><b>Alfred Otto Carl Nier</b> (* <a href="28._Mai" title="28. Mai">28. Mai</a> <a href="1911" title="1911">1911</a> in <a href="Saint_Paul_(Minnesota)" title="Saint Paul (Minnesota)">Saint Paul</a>, <a href="Minnesota" title="Minnesota">Minnesota</a>; † <a href="16._Mai" title="16. Mai">16. Mai</a> <a href="1994" title="1994">1994</a> in <a href="Minneapolis" title="Minneapolis">Minneapolis</a>) war ein US-amerikanischer <a href="Physiker" title="Physiker">Physiker</a>. Er lieferte Pionierarbeiten auf dem Gebiet der <a href="Massenspektrometrie" title="Massenspektrometrie">Massenspektrometrie</a>.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Leben">Leben</h2></div>
<p>Nier war der Sohn deutscher Einwanderer. Nach einem Studium als <a href="Ingenieur" title="Ingenieur">Ingenieur</a> der Elektrotechnik bis 1931, begann er, arbeitlos geworden während der <a href="Weltwirtschaftskrise" title="Weltwirtschaftskrise">Weltwirtschaftskrise</a>, ein Studium der <a href="Physik" title="Physik">Physik</a>. Seine durch ein Stipendium geförderten Arbeiten an der <a href="Harvard_University" title="Harvard University">Harvard University</a> führten 1938 zu der Publikation der relativen Häufigkeiten der <a href="Isotop" title="Isotop">Isotope</a> des Elements <a href="Uran" title="Uran">Uran</a>.<sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup> Ebenfalls untersuchte er die <a href="Entdeckung_der_Kernspaltung" title="Entdeckung der Kernspaltung">Spaltbarkeit</a> des Elements genauer. Im selben Jahr wurde er Fellow der <a href="American_Physical_Society" title="American Physical Society">American Physical Society</a>. Abgesehen von dem Aufenthalt 1936–1938 in Harvard und der Mitarbeit von 1943 bis 1945 am <a href="Manhattan-Projekt" title="Manhattan-Projekt">Manhattan Project</a> in <a href="New_York_City" title="New York City">New York City</a> bei der Kellex Corporation war er während seiner ganzen akademischen Laufbahn an der <a href="University_of_Minnesota" title="University of Minnesota">University of Minnesota</a> in Minneapolis tätig. 1980 wurde er dort auch Ehrendoktor.
</p><p>Seit 1950 war er Mitglied der <a href="National_Academy_of_Sciences" title="National Academy of Sciences">National Academy of Sciences</a>. 1980 wurde er zum Mitglied der <a href="American_Academy_of_Arts_and_Sciences" title="American Academy of Arts and Sciences">American Academy of Arts and Sciences</a> gewählt. Er war Mitglied der <a href="American_Philosophical_Society" title="American Philosophical Society">American Philosophical Society</a> sowie auswärtiges Mitglied der <a href="K%C3%B6niglich_Schwedische_Akademie_der_Wissenschaften" title="Königlich Schwedische Akademie der Wissenschaften">Königlich Schwedischen Akademie der Wissenschaften</a>. 1985 war er erster Preisträger des <i>Frank H. Field and Joe L. Franklin Award for Outstanding Achievment in Mass Spectrometry</i> der <a href="American_Chemical_Society" title="American Chemical Society">American Chemical Society</a>.<sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup>
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<div class="mw-heading mw-heading2"><h2 id="Werke_(Auswahl)"><span id="Werke_.28Auswahl.29"></span>Werke (Auswahl)</h2></div>
<ul><li>Alfred O. Nier, E. T. Booth, J. R. Dunning, A. V. Grosse: <cite class="lang" lang="en" dir="auto" style="font-style:italic">Nuclear Fissions of Separated Uranium Isotopes</cite>. In: <cite class="lang" lang="en" dir="auto" style="font-style:italic">Physical Review</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em">&nbsp;</span>57</span>, 3.&nbsp;März 1940, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em">&nbsp;</span>546</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1103/PhysRev.57.546">10.1103/PhysRev.57.546</a></span> (englisch).<span class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rfr_id=info:sid/de.wikipedia.org:Alfred+Nier&amp;rft.atitle=Nuclear+Fissions+of+Separated+Uranium+Isotopes&amp;rft.au=Alfred+O.+Nier%2C+E.+T.+Booth%2C+J.+R.+Dunning%2C+...&amp;rft.btitle=Physical+Review&amp;rft.date=1940-03-03&amp;rft.doi=10.1103%2FPhysRev.57.546&amp;rft.genre=book&amp;rft.pages=546&amp;rft.volume=57" style="display:none">&nbsp;</span></li>
<li>Alfred O. Nier, E. T. Booth, J. R. Dunning, A. V. Grosse: <cite class="lang" lang="en" dir="auto" style="font-style:italic">Further Experiments on Fission of Separated Uranium Isotopes</cite>. In: <cite class="lang" lang="en" dir="auto" style="font-style:italic">Physical Review</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em">&nbsp;</span>57</span>, 15.&nbsp;April 1940, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em">&nbsp;</span>748</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1103/PhysRev.57.748">10.1103/PhysRev.57.748</a></span> (englisch).<span class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rfr_id=info:sid/de.wikipedia.org:Alfred+Nier&amp;rft.atitle=Further+Experiments+on+Fission+of+Separated+Uranium+Isotopes&amp;rft.au=Alfred+O.+Nier%2C+E.+T.+Booth%2C+J.+R.+Dunning%2C+...&amp;rft.btitle=Physical+Review&amp;rft.date=1940-04-15&amp;rft.doi=10.1103%2FPhysRev.57.748&amp;rft.genre=book&amp;rft.pages=748&amp;rft.volume=57" style="display:none">&nbsp;</span></li>
<li>Alfred O. Nier: <cite style="font-style:italic">A Mass Spectrometer for Isotope and Gas Analysis</cite>. In: <cite style="font-style:italic">Rev. Scient. Instr.</cite> <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em">&nbsp;</span>18</span>, 19.&nbsp;Februar 1947, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em">&nbsp;</span>398</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1063/1.1740961">10.1063/1.1740961</a></span>.<span class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rfr_id=info:sid/de.wikipedia.org:Alfred+Nier&amp;rft.atitle=A+Mass+Spectrometer+for+Isotope+and+Gas+Analysis&amp;rft.au=Alfred+O.+Nier&amp;rft.btitle=Rev.+Scient.+Instr.&amp;rft.date=1947-02-19&amp;rft.doi=10.1063%2F1.1740961&amp;rft.genre=book&amp;rft.pages=398&amp;rft.volume=18" style="display:none">&nbsp;</span></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Weblinks">Weblinks</h2></div>
<ul><li><span class="cite"><a rel="nofollow" class="external text" href="https://www.nasonline.org/member-directory/deceased-members/52112.html"><i>Member Directory: Alfred O.C. Nier.</i></a> National Academy of Sciences,<span class="Abrufdatum"> abgerufen am 7.&nbsp;Dezember 2015</span> (englisch, Biographical Memoir von <a href="John_Reynolds_(Physiker)" title="John Reynolds (Physiker)">John H. Reynolds</a>).</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&amp;rfr_id=info%3Asid%2Fde.wikipedia.org%3AAlfred+Nier&amp;rft.title=Member+Directory%3A+Alfred+O.C.+Nier&amp;rft.description=Member+Directory%3A+Alfred+O.C.+Nier&amp;rft.identifier=https%3A%2F%2Fwww.nasonline.org%2Fmember-directory%2Fdeceased-members%2F52112.html&amp;rft.publisher=National+Academy+of+Sciences&amp;rft.language=en">&nbsp;</span></li></ul>
<div class="mw-heading mw-heading2"><h2 id="Einzelnachweise">Einzelnachweise</h2></div>
<ol class="references">
<li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">Alfred O. Nier: <cite class="lang" lang="en" dir="auto" style="font-style:italic">A Mass Spectrometer for Routine Isotope Abundance Measurements</cite>. In: <cite class="lang" lang="en" dir="auto" style="font-style:italic">Review of Scientific Instruments</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em">&nbsp;</span>11</span>, <span style="white-space:nowrap">Nr.<span style="display:inline-block;width:.2em">&nbsp;</span>7</span>, 1.&nbsp;Juli 1940, <a href="Internationale_Standardnummer_f%C3%BCr_fortlaufende_Sammelwerke" title="Internationale Standardnummer für fortlaufende Sammelwerke">ISSN</a>&nbsp;<span style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://zdb-katalog.de/list.xhtml?t=iss%3D%220034-6748%22&amp;key=cql">0034-6748</a></span>, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em">&nbsp;</span>212–216</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1063/1.1751688">10.1063/1.1751688</a></span> (englisch, <a rel="nofollow" class="external text" href="https://pubs.aip.org/rsi/article/11/7/212/285141/A-Mass-Spectrometer-for-Routine-Isotope-Abundance">aip.org</a> [abgerufen am 5.&nbsp;Oktober 2025]).<span class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rfr_id=info:sid/de.wikipedia.org:Alfred+Nier&amp;rft.atitle=A+Mass+Spectrometer+for+Routine+Isotope+Abundance+Measurements&amp;rft.au=Alfred+O.+Nier&amp;rft.date=1940-07-01&amp;rft.doi=10.1063%2F1.1751688&amp;rft.genre=journal&amp;rft.issn=0034-6748&amp;rft.issue=7&amp;rft.jtitle=Review+of+Scientific+Instruments&amp;rft.pages=212-216&amp;rft.volume=11" style="display:none">&nbsp;</span></span>
</li>
<li id="cite_note-2"><span class="mw-cite-backlink"><a href="#cite_ref-2">↑</a></span> <span class="reference-text">Alfred O. Nier: <cite class="lang" lang="en" dir="auto" style="font-style:italic">The Isotopic Constitution of Uranium and the Half-Lives of the Uranium Isotopes. I</cite>. In: <cite class="lang" lang="en" dir="auto" style="font-style:italic">Physical Review</cite>. <span style="white-space:nowrap">Band<span style="display:inline-block;width:.2em">&nbsp;</span>55</span>, <span style="white-space:nowrap">Nr.<span style="display:inline-block;width:.2em">&nbsp;</span>2</span>, 15.&nbsp;Januar 1939, <a href="Internationale_Standardnummer_f%C3%BCr_fortlaufende_Sammelwerke" title="Internationale Standardnummer für fortlaufende Sammelwerke">ISSN</a>&nbsp;<span style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://zdb-katalog.de/list.xhtml?t=iss%3D%220031-899X%22&amp;key=cql">0031-899X</a></span>, <span style="white-space:nowrap">S.<span style="display:inline-block;width:.2em">&nbsp;</span>150–153</span>, <a href="Digital_Object_Identifier" title="Digital Object Identifier">doi</a>:<span class="uri-handle" style="white-space:nowrap"><a rel="nofollow" class="external text" href="https://doi.org/10.1103/PhysRev.55.150">10.1103/PhysRev.55.150</a></span> (englisch, <a rel="nofollow" class="external text" href="https://link.aps.org/doi/10.1103/PhysRev.55.150">aps.org</a> [abgerufen am 5.&nbsp;Oktober 2025]).<span class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rfr_id=info:sid/de.wikipedia.org:Alfred+Nier&amp;rft.atitle=The+Isotopic+Constitution+of+Uranium+and+the+Half-Lives+of+the+Uranium+Isotopes.+I&amp;rft.au=Alfred+O.+Nier&amp;rft.date=1939-01-15&amp;rft.doi=10.1103%2FPhysRev.55.150&amp;rft.genre=journal&amp;rft.issn=0031-899X&amp;rft.issue=2&amp;rft.jtitle=Physical+Review&amp;rft.pages=150-153&amp;rft.volume=55" style="display:none">&nbsp;</span></span>
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<li id="cite_note-3"><span class="mw-cite-backlink"><a href="#cite_ref-3">↑</a></span> <span class="reference-text"><span class="cite"><a rel="nofollow" class="external text" href="https://www.acs.org/content/acs/en/funding-and-awards/awards/national/bytopic/frank-h-field-and-joe-l-franklin-award-for-outstanding-achievement-in-mass-spectrometry.html"><i>Frank H. Field and Joe L. Franklin Award.</i></a> American Chemical Society,<span class="Abrufdatum"> abgerufen am 19.&nbsp;August 2019</span> (mit Liste der Preisträger).</span><span style="display: none;" class="Z3988" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&amp;rfr_id=info%3Asid%2Fde.wikipedia.org%3AAlfred+Nier&amp;rft.title=Frank+H.+Field+and+Joe+L.+Franklin+Award&amp;rft.description=Frank+H.+Field+and+Joe+L.+Franklin+Award&amp;rft.identifier=https%3A%2F%2Fwww.acs.org%2Fcontent%2Facs%2Fen%2Ffunding-and-awards%2Fawards%2Fnational%2Fbytopic%2Ffrank-h-field-and-joe-l-franklin-award-for-outstanding-achievement-in-mass-spectrometry.html&amp;rft.publisher=American+Chemical+Society">&nbsp;</span></span>
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Normdaten&nbsp;(Person): <a href="Gemeinsame_Normdatei" title="Gemeinsame Normdatei">GND</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://d-nb.info/gnd/1067805346">1067805346</a></span> | <a href="Library_of_Congress_Control_Number" title="Library of Congress Control Number">LCCN</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://id.loc.gov/authorities/n86125367">n86125367</a></span> | <a href="Virtual_International_Authority_File" title="Virtual International Authority File">VIAF</a>: <span class="-print"><a rel="nofollow" class="external text" href="https://viaf.org/viaf/162981601/">162981601</a></span> | </div>
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