Lifetime of the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mn>3</mn><mrow><mmultiscripts><mrow><mi>P</mi></mrow><mprescripts></mprescripts><mrow></mrow><mrow><mn>1</mn></mrow><mrow></mrow><mrow></mrow></mmultiscripts></mrow></math></span> State of Helium

R. G. Fowler; T. M. Holzberlein; C. H. Jacobson

doi:10.1103/PhysRev.140.A1050

Lifetime of the $3 {}^{1}P$ State of Helium

R. G. Fowler, T. M. Holzberlein^*, and C. H. Jacobson

Samuel Roberts Noble Laboratory of Electron Physics, University of Oklahoma, Norman, Oklahoma

^*Permanent address: Principia College, Elsah, Illinois.

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Phys. Rev. 140, A1050 – Published 15 November, 1965

DOI: https://doi.org/10.1103/PhysRev.140.A1050

Abstract

The pressure dependence of the lifetime of the helium transition $3 {}^{1}P - 2 {}^{1}S$ has been measured over a wide range of pressure, ranging from free escape to complete blockading. The values of lifetimes so obtained are in good agreement with theory. At pressures beyond 1 mm Hg, quenching is observed corresponding to a probable molecular formation.

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Lifetime of the $3 {}^{1}P$ State of Helium

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Lifetime of the 3P1 State of Helium

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Lifetime of the $3 {}^{1}P$ State of Helium