Question: What prize did the scientist who ssynthesized an element with Kenneth Ross MacKenzie win?

Context paragraphs:
Ross MacKenzie (athlete): Ross MacKenzie (born 18 July 1946) is a Canadian sprinter.  He competed in the men's 400 metres at the 1968 Summer Olympics.  He finished second in the 1967 Pan American Games 4 × 400 metres relay (with Brian MacLaren, Bill Crothers, and Robert McLaren).  MacKenzie also finished fifth in the 1967 Pan American Games 400 metres.  He won a silver medal in the 1966 British Empire and Commonwealth Games 4 x 440 yards relay with Don Domansky, Brian MacLaren and Bill Crothers.

Black Sunday (1977 film): Black Sunday is a 1977 American thriller film directed by John Frankenheimer, based on Thomas Harris' novel of the same name.  The film was produced by Robert Evans, and stars Robert Shaw, Bruce Dern and Marthe Keller.  It was nominated for the Edgar Allan Poe Award for Best Motion Picture in 1978.  The screenplay was by Ernest Lehman, Kenneth Ross and Ivan Moffat.  Ross had previously written the screenplay for "The Day of the Jackal", a similar plot-driven political thriller.

Clan Mackenzie: Clan Mackenzie (Scottish Gaelic: "Clann Choinnich" ] ) is a Scottish clan, traditionally associated with Kintail and lands in Ross-shire in the Scottish Highlands.  Traditional genealogies trace the ancestors of the Mackenzie chiefs to the 12th-century.  However, the earliest Mackenzie chief recorded by contemporary evidence is Alexander Mackenzie of Kintail who died some time after 1471.  Traditionally, during the Wars of Scottish Independence, the Mackenzies supported Robert the Bruce, but feuded with the Earls of Ross in the latter part of the 14th-century.  During the 15th and 16th-centuries the Mackenzies feuded with the neighboring clans of Munro and MacDonald.  In the 17th-century the Mackenzie chief was made Earl of Seaforth in the peerage of Scotland.  During the Scottish Civil War of the 17th-century the Mackenzies largely supported the Royalists.  During the Jacobite rising of 1715 the chief and clan of Mackenzie supported the Jacobite cause.  However, during the Jacobite rising of 1745 the clan was divided with the chief, Kenneth Mackenzie, Lord Fortrose, supporting the British-Hanoverian Government and his relative, George Mackenzie, 3rd Earl of Cromartie, supporting the Jacobites.

Muir Mackenzie baronets: The Muir Mackenzie Baronetcy, of Delvine in the County of Perth, is a title in the Baronetage of the United Kingdom.  It was created on 9 November 1805 for Alexander Muir Mackenzie.  Born Alexander Muir, he had assumed the additional surname of Mackenzie on succeeding to the estates of his great-uncle John Mackenzie, of Delvine, Perthshire, third son of Sir Kenneth Mackenzie, 1st Baronet, of Coul (see Mackenzie baronets).

Ross Whicher: Ross MacKenzie Whicher (February 13, 1918 - April 19, 2002) was a Canadian politician and businessman.

Ross and Sutherland Constabulary: The Ross and Sutherland Constabulary was a Police Force in Scotland that existed between 16 May 1963 and 16 May 1975.  Kenneth Ross, BL was the Chief Constable of the force for its entire existence.

Kenneth Ross MacKenzie: Kenneth Ross MacKenzie (June 15, 1912 – July 4, 2002) together with Dale R. Corson and Emilio Segrè, 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 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.

Ross MacKenzie (footballer): Ross MacKenzie (born October 21, 1984 in Paisley) is a Scottish footballer.

Emilio Segrè: Emilio Gino Segrè (1 February 1905 – 22 April 1989) was an Italian physicist and Nobel laureate who discovered the elements technetium and astatine, and the antiproton, a sub-atomic antiparticle, for which he was awarded the Nobel Prize in Physics in 1959.

Brian MacLaren: Brian MacLaren (born 21 December 1943) is a Canadian sprinter.  He competed in the men's 400 metres at the 1972 Summer Olympics.  He finished second in the 1967 Pan American Games 4 × 400 metres relay (with Bill Crothers, Ross MacKenzie, and Robert McLaren) and third in the 1967 Pan American Games 800 metres.  He won a silver medal in the 1966 British Empire and Commonwealth Games 4 x 440 yards relay with Don Domansky, Ross MacKenzie and Bill Crothers.

Supporting paragraphs: Kenneth Ross MacKenzie Emilio Segrè
Answer: Nobel Prize in Physics