Effect of ionization density on the time dependence of luminescence from liquid argon and xenon

Akira Hitachi, Tan Takahashi, Nobutaka Funayama, Kimiaki Masuda, Jun Kikuchi, and Tadayoshi Doke
Phys. Rev. B 27, 5279 – Published 1 May 1983
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Abstract

The time dependence of luminescence in liquid argon and xenon has been studied for electron, α-particle, and fission-fragment excitation. The lifetimes of low excited molecular states (Σu+1 and Σu+3) do not depend on the density of excited species while the intensity ratio of Σu+1 to Σu+3 is found to be larger at higher deposited energy density. The lifetimes obtained for the Σu+1 and Σu+3 states are 7.0 ± 1.0 nsec and 1.6 ± 0.1 μsec, respectively, in liquid argon, and 4.3 ± 0.6 and 22.0 ± 2.0 nsec, respectively, in liquid xenon. The mechanism of quenching of luminescence at a high density of excited species in liquid argon and xenon is discussed.

  • Received 25 June 1982

DOI:https://doi.org/10.1103/PhysRevB.27.5279

©1983 American Physical Society

Authors & Affiliations

Akira Hitachi* and Tan Takahashi

  • The Institute of Physical and Chemical Research, Wako-shi, Saitama 351, Japan

Nobutaka Funayama, Kimiaki Masuda, Jun Kikuchi, and Tadayoshi Doke

  • Science and Engineering Research Laboratory, Waseda University, Shinjuku-ku, Tokyo 162, Japan

  • *Present address: Radiation Laboratory, University of Notre Dame, Notre Dame, Indiana 46556.

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Issue

Vol. 27, Iss. 9 — 1 May 1983

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