Observation of population inversions in a freely expanding helium plasma

Population inversion on He I is experimentally investigated in a recombining helium plasma. Experimental results confirm that population inversions for n = 3–4 and 3–5 levels of the He I singlet system are larger than for the triplet system. The difference between the two systems is discussed by usi...

Full description

Saved in:
Bibliographic Details
Published inPhysics letters. A Vol. 111; no. 6; pp. 285 - 288
Main Authors Hara, Tamio, Ohgo, Tadashi, Hamagaki, Manabu, Dote, Toshihiko
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.01.1985
Elsevier Science
Subjects
Exact sciences and technology
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
Plasma properties
Plasma
Recombination
Plasma expansion
Population inversion
Experimental study
Helium
Singlet
Energy level
Online AccessGet full text

Cover

More Information
Summary:Population inversion on He I is experimentally investigated in a recombining helium plasma. Experimental results confirm that population inversions for n = 3–4 and 3–5 levels of the He I singlet system are larger than for the triplet system. The difference between the two systems is discussed by using rate equations.
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(85)90628-0