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| birth_place = [[Portland, Oregon|Portland]], [[Oregon]], [[United States|U.S.]]
| birth_place = [[Portland, Oregon|Portland]], [[Oregon]], [[United States|U.S.]]
| residence =
| residence =
⚫
| death_date = {{death date and age|2002|7|3|1912|6|15}}
| nationality = [[United States|American]]
⚫
| death_date = {{death date and age|2002|7|4|1912|6|15}}
| death_place = [[Los Angeles]], [[California]], U.S.
| death_place = [[Los Angeles]], [[California]], U.S.
| field = [[Nuclear physics]]
| field = [[Nuclear physics]]
| work_institution = [[Lawrence Livermore National Laboratory]], [[University of California, Los Angeles]]
| work_institution = [[Lawrence Livermore National Laboratory]]<br/>[[University of California, Los Angeles]]
| alma_mater = [[University of British Columbia]] ([[B. S.|BS]])<br>[[University of California, Berkeley]] ([[PhD]])
| alma_mater = [[University of British Columbia]] ([[B. S.|BS]], [[M. S.|MS]])<br/>[[University of California, Berkeley]] ([[PhD]])
| doctoral_advisor = [[Ernest Lawrence]]<ref>{{cite news |url=https://news.google.com/newspapers?nid=1129&dat=20020713&id=xtNRAAAAIBAJ&sjid=RXADAAAAIBAJ&pg=5300,815961 |title=Kenneth Ross Mackenzie .Worked On Atom Bomb As Grad Student |first=Myrna |last=Oliver |newspaper=[[Pittsburgh Post-Gazette]] |date=13 July 2002 |access-date=12 November 2018}}</ref>
| doctoral_advisor = [[Ernest Lawrence]]<ref>{{cite news |url=https://news.google.com/newspapers?nid=1129&dat=20020713&id=xtNRAAAAIBAJ&sjid=RXADAAAAIBAJ&pg=5300,815961 |title=Kenneth Ross Mackenzie .Worked On Atom Bomb As Grad Student |first=Myrna |last=Oliver |newspaper=[[Pittsburgh Post-Gazette]] |date=13 July 2002 |access-date=12 November 2018}}</ref>
| doctoral_students =
| doctoral_students =
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}}
}}


'''Kenneth Ross MacKenzie''' (June 15, 1912 &ndash; July 4, 2002) was an American nuclear physicist. Together with [[Dale R. Corson]] and [[Emilio Segrè]], he synthesized the element [[astatine]], in 1940. MacKenzie received his PhD under [[Ernest Lawrence]] at [[Lawrence Livermore National Laboratory]]. Lawrence, MacKenzie, and their colleagues devised the first [[cyclotron]]. He was a professor of physics at [[University of California, Los Angeles|UCLA]], where he and Reg Richardson built UCLA's first cyclotron and later a [[bevatron]]. MacKenzie devised [[MacKenzie bucket]]s which are plasma sources created by lining vacuum chamber walls with permanent magnets of alternating polarity to suppress plasma electron losses, that are widely used to this day. He later traveled around the world, helping to troubleshoot various country's cyclotron problems. Later in life, he studied plasma physics and dark matter.
'''Kenneth Ross MacKenzie''' (June 15, 1912 &ndash; July 3, 2002) was an American nuclear physicist. Together with [[Dale R. Corson]] and [[Emilio Segrè]], he synthesized the element [[astatine]], in 1940. MacKenzie received his PhD under [[Ernest Lawrence]] at [[Lawrence Livermore National Laboratory]]. Lawrence, MacKenzie, and their colleagues devised the first [[cyclotron]].


MacKenzie was a professor of physics at the [[University of California, Los Angeles]] (UCLA), where he and Reg Richardson built UCLA's first cyclotron and later a [[bevatron]]. MacKenzie devised [[MacKenzie bucket]]s which are plasma sources created by lining vacuum chamber walls with permanent magnets of alternating polarity to suppress plasma electron losses, that are widely used to this day. He later traveled around the world, helping to troubleshoot various country's cyclotron problems. Later in life, he studied plasma physics and dark matter.
==Help with the Manhattan Project==

⚫
Dr. K. R. Mackenzie’s family moved to Victoria, British Columbia when he was age 10. He received his bachelor's degree and master's degree from the University of British Columbia, and began further study at the University of California, Berkeley in 1937.<ref>http://home.physics.ucla.edu/news/in_memory/kenneth_mackenzie/mackenzie.pdf {{Bare URL PDF|date=March 2022}}</ref> As a graduate student, Kenneth Ross Mackenzie was involved in the [[Manhattan Project]] to help solve how to separate the rare uranium-235 isotope from the identical dominant uranium-238 isotope at Oak Ridge, Tennessee.<ref>{{cite web|last=Oliver|first=Myrna|title=Kenneth MacKenzie, 90; Helped Discover Astatine, Built UCLA's Atom Smasher|website=[[Los Angeles Times]] |date=11 July 2002 |url=http://articles.latimes.com/2002/jul/11/local/me-mackenzie11}}</ref> As an interesting side note, while working on the Manhattan project, MacKenzie and colleagues borrowed 14,700 tons of silver from the US Treasury and melted it into strands to replace old copper in their magnetic coils. After the war, the silver was melted and returned to the treasury.<ref>{{cite journal|title=In Memoriam|journal=UCLA Today|date=October 23, 2001 |volume=22|issue=5|url=http://home.physics.ucla.edu/news/in_memory/kenneth_mackenzie/mackenzie.pdf}}</ref>
==Early life and career==
⚫
Mackenzie’s family moved to Victoria, British Columbia when he was age 10. He received his Bachelor's degree and Master's degree from the [[University of British Columbia]], and began further study at the [[University of California, Berkeley]], in 1937.<ref name=elusiveelement>{{cite web|url=http://home.physics.ucla.edu/news/in_memory/kenneth_mackenzie/mackenzie.pdf|title=Physicist helped find elusive element |first=Tom |last=Hawthorn |location=Victoria |newspaper=[[The Globe and Mail]] |access-date=12 November 2018 |via=[[UCLA]] Physics & Astronomy|url-status=dead|archive-url=https://web.archive.org/web/20060921143355/https://home.physics.ucla.edu/news/in_memory/kenneth_mackenzie/mackenzie.pdf|archive-date=2006-09-21}}</ref> As a graduate student, Kenneth Ross Mackenzie was involved in the [[Manhattan Project]] to help solve how to separate the rare uranium-235 isotope from the identical dominant uranium-238 isotope at Oak Ridge, Tennessee.<ref>{{cite web|last=Oliver|first=Myrna|title=Kenneth MacKenzie, 90; Helped Discover Astatine, Built UCLA's Atom Smasher|website=[[Los Angeles Times]] |date=11 July 2002 |url=https://www.latimes.com/archives/la-xpm-2002-jul-11-me-mackenzie11-story.html}}</ref> While working on the Manhattan project, MacKenzie and colleagues borrowed 14,700 tons of silver from the US Treasury and melted it into strands to replace old copper in their magnetic coils. After the war, the silver was melted and returned to the treasury.<ref>{{cite journal|title=In Memoriam|journal=UCLA Today|date=October 23, 2001|volume=22|issue=5|url=http://home.physics.ucla.edu/news/in_memory/kenneth_mackenzie/mackenzie.pdf|access-date=December 3, 2010|archive-date=June 15, 2011|archive-url=https://web.archive.org/web/20110615191023/http://home.physics.ucla.edu/news/in_memory/kenneth_mackenzie/mackenzie.pdf|url-status=dead}}</ref>


==Other roles==
==Other roles==
As an actor, he played minor roles with [[Yvonne De Carlo]] in ''[[Ride the Pink Horse]]'' (1947), ''[[River Lady]]'' (1948) and ''[[Black Bart (film)|Black Bart]]'' (1948).<ref>{{cite book |url=https://books.google.com/books?id=5DFGbfNyyqEC&pg=PA125 |title=Once Upon a Time in Paradise: Canadians in the Golden Age of Hollywood |first=Charles |last=Foster |author-link=Charles Foster (writer) |publisher=[[Dundurn Group]] |date=1 October 2003 |page=125 |isbn=9781459712676}}</ref>
As an actor, he played minor roles with [[Yvonne De Carlo]] in ''[[Ride the Pink Horse]]'' (1947), ''[[River Lady]]'' (1948) and ''[[Black Bart (film)|Black Bart]]'' (1948).<ref>{{cite book |url=https://books.google.com/books?id=5DFGbfNyyqEC&pg=PA125 |title=Once Upon a Time in Paradise: Canadians in the Golden Age of Hollywood |first=Charles |last=Foster |author-link=Charles Foster (writer) |publisher=[[Dundurn Group]] |date=1 October 2003 |page=125 |isbn=9781459712676}}</ref>


He died in [[Los Angeles]] on 4 July 2002 at aged 90.<ref>{{cite news |url=http://home.physics.ucla.edu/news/in_memory/kenneth_mackenzie/mackenzie.pdf |title=Physicist helped find elusive element |first=Tom |last=Hawthorn |location=Victoria |newspaper=[[The Globe and Mail]] |access-date=12 November 2018 |via=[[UCLA]] Physics & Astronomy}}</ref><ref>{{cite web |title=In Memoriam Kenneth Ross MacKenzie |work=[[University of California]] |url=http://www.universityofcalifornia.edu/senate/inmemoriam/KennethRossMacKenzie.htm |archive-url=https://web.archive.org/web/20050929122804/http://www.universityofcalifornia.edu/senate/inmemoriam/KennethRossMacKenzie.htm |archive-date=29 September 2005 |first1=David S. |last1=Saxon |author-link=David S. Saxon |first2=Alfred Y. |last2=Wong |first3=Byron T. |last3=Wright |first4=Ralph F. |last4=Wuerker |year=2002 |access-date=12 November 2018}}</ref>
He died in [[Los Angeles]] on 4 July 2002 at aged 90.<ref name=elusiveelement/><ref>{{cite web |title=In Memoriam Kenneth Ross MacKenzie |work=[[University of California]] |url=http://www.universityofcalifornia.edu/senate/inmemoriam/KennethRossMacKenzie.htm |archive-url=https://web.archive.org/web/20050929122804/http://www.universityofcalifornia.edu/senate/inmemoriam/KennethRossMacKenzie.htm |archive-date=29 September 2005 |first1=David S. |last1=Saxon |author-link=David S. Saxon |first2=Alfred Y. |last2=Wong |first3=Byron T. |last3=Wright |first4=Ralph F. |last4=Wuerker |year=2002 |access-date=12 November 2018}}</ref>


==References==
==References==
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[[Category:Scientists from Portland, Oregon]]
[[Category:Scientists from Portland, Oregon]]
[[Category:Manhattan Project people]]
[[Category:Manhattan Project people]]
[[Category:University of British Columbia alumni]]




Latest revision as of 20:43, 14 August 2024

Kenneth Ross MacKenzie
MacKenzie in 1971
BornJune 15, 1912
Portland, Oregon, U.S.
DiedJuly 3, 2002(2002-07-03) (aged 90)
Los Angeles, California, U.S.
Alma materUniversity of British Columbia (BS, MS)
University of California, Berkeley (PhD)
Known forSynthesis of astatine
Scientific career
FieldsNuclear physics
InstitutionsLawrence Livermore National Laboratory
University of California, Los Angeles
Doctoral advisorErnest Lawrence[1]

Kenneth Ross MacKenzie (June 15, 1912 – July 3, 2002) was an American nuclear physicist. Together with Dale R. Corson and Emilio Segrè, he synthesized the element astatine, in 1940. MacKenzie received his PhD under Ernest Lawrence at Lawrence Livermore National Laboratory. Lawrence, MacKenzie, and their colleagues devised the first cyclotron.

MacKenzie was a professor of physics at the University of California, Los Angeles (UCLA), where he and Reg Richardson built UCLA's first cyclotron and later a bevatron. MacKenzie devised MacKenzie buckets which are plasma sources created by lining vacuum chamber walls with permanent magnets of alternating polarity to suppress plasma electron losses, that are widely used to this day. He later traveled around the world, helping to troubleshoot various country's cyclotron problems. Later in life, he studied plasma physics and dark matter.

Early life and career

[edit]

Mackenzie’s family moved to Victoria, British Columbia when he was age 10. He received his Bachelor's degree and Master's degree from the University of British Columbia, and began further study at the University of California, Berkeley, in 1937.[2] As a graduate student, Kenneth Ross Mackenzie was involved in the Manhattan Project to help solve how to separate the rare uranium-235 isotope from the identical dominant uranium-238 isotope at Oak Ridge, Tennessee.[3] While working on the Manhattan project, MacKenzie and colleagues borrowed 14,700 tons of silver from the US Treasury and melted it into strands to replace old copper in their magnetic coils. After the war, the silver was melted and returned to the treasury.[4]

Other roles

[edit]

As an actor, he played minor roles with Yvonne De Carlo in Ride the Pink Horse (1947), River Lady (1948) and Black Bart (1948).[5]

He died in Los Angeles on 4 July 2002 at aged 90.[2][6]

References

[edit]
  1. ^ Oliver, Myrna (13 July 2002). "Kenneth Ross Mackenzie .Worked On Atom Bomb As Grad Student". Pittsburgh Post-Gazette. Retrieved 12 November 2018.
  2. ^ a b Hawthorn, Tom. "Physicist helped find elusive element" (PDF). The Globe and Mail. Victoria. Archived from the original (PDF) on 2006-09-21. Retrieved 12 November 2018 – via UCLA Physics & Astronomy.
  3. ^ Oliver, Myrna (11 July 2002). "Kenneth MacKenzie, 90; Helped Discover Astatine, Built UCLA's Atom Smasher". Los Angeles Times.
  4. ^ "In Memoriam" (PDF). UCLA Today. 22 (5). October 23, 2001. Archived from the original (PDF) on June 15, 2011. Retrieved December 3, 2010.
  5. ^ Foster, Charles (1 October 2003). Once Upon a Time in Paradise: Canadians in the Golden Age of Hollywood. Dundurn Group. p. 125. ISBN 9781459712676.
  6. ^ Saxon, David S.; Wong, Alfred Y.; Wright, Byron T.; Wuerker, Ralph F. (2002). "In Memoriam Kenneth Ross MacKenzie". University of California. Archived from the original on 29 September 2005. Retrieved 12 November 2018.
[edit]


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