Nikolai Borisovich Delone

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Nikolai Borisovich Delone (22 May 1926 – 11 September 2008) was a Soviet physicist born in Leningrad, USSR (now Saint Petersburg, Russia).[1]


Delone was born in Leningrad on 22 May 1922. He was the son of Boris Delone, a mathematician.[1] He graduated from the Moscow Engineering Physics Institute in 1951, and obtained his Ph.D at the Lebedev Physical Institute in the late 1950s.[1]

Delone is recognized for the first observations of multiphoton ionization, in 1965.[1][2] Delone, along with Maxim Ammosov and Vladimir P. Krainov, developed the ADK formula, relating tunneling ionization in laser fields.[1] He was also a lecturer at the Moscow Institute of Physics and Technology.[1] After the dissolution of the Soviet Union, he travelled abroad and worked on international collaborations on multiphoton physics.[1]

His son was Vadim Delaunay, a poet and dissident, who participated in the 1968 Red Square demonstration of protest against military suppression of the Prague Spring.


Delone published over 200 scientific papers, a four-book series on the physics of strong laser fields and on multiphoton physics, and a series of high-school level Russian textbooks.[1]


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Vladimir P. Krainov, Gérard Mainfray, See Leang Chin, Joseph H. Eberly, Pierre Agostini, Mikhail V. Federov (2009). "Obituaries: Nikolai Borisovich Delone". Physics Today. 62 (5): 67. Bibcode:2009PhT....62e..67K. doi:10.1063/1.3141949.CS1 maint: multiple names: authors list (link)<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
  2. G.S. Voronov, G.A. Delone, N.B. Delone, and O.V. Kudrevatova (1965). "Multiphoton Ionization of the Hydrogen Molecule in the Strong Electric Field of Ruby Laser Emission". Zh. Eksperim. i Teor. Fiz. Pis'ma v Redaktsiyu (in русский). 2: 377. Bibcode:1965ZhPmR...2..377V.CS1 maint: multiple names: authors list (link)<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>
    English translation in JETP Letters. 2: 237. 1965. Bibcode:1965JETPL...2..237V. Missing or empty |title= (help)<templatestyles src="Module:Citation/CS1/styles.css"></templatestyles>

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