NDLI: On the Cd III spectrum in a pulsed helium discharge

Content Provider	Springer Nature Link
Author	Djeniže, S. Srećković, A. Bukvić, S.
Copyright Year	2011
Abstract	On the basis of the spectral line intensity relaxation during the plasma decay, fifty six spectral lines between 219 nm and 330 nm in the cadmium (Cd) spectrum were identified as Cd III (doubly ionized) or Cd IV (triply ionized) lines. The measured Stark widths of twelve, the most intense spectral lines around 315±15 nm with well defined profiles, are presented. Investigated spectral lines originate from the high lying energy levels, not classified up to now. A linear low-pressure pulsed arc was used as an optically thin plasma source. A pulsed discharge was produced in a pyrex discharge tube. Helium was chosen as the carrier gas. The cadmium atoms were sputtered from the thin cadmium cylindrical plates located in the homogeneous axial part of the discharge tube. The helium plasma was operated at electron temperatures up to 19 000 K and 1.1 × 1023 m-3 electron density. The stepwise ionization processes via the high lying singly ionized (Cd II) energy levels, populated well due to the Penning and charge exchange effects, provide high density of the Cd III (and Cd IV) ions in our helium plasma. The temporal evolutions of the spectral line intensities were monitored using a spectrograph and an ICCD camera as a highly sensitive detection system.
Starting Page	185
Ending Page	189
Page Count	5
File Format	PDF
ISSN	14346060
Journal	The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics
Volume Number	62
Issue Number	2
e-ISSN	14346079
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-03-25
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Spectroscopy/Spectrometry Physical Chemistry Nonlinear Dynamics Quantum Information Technology, Spintronics Quantum Physics Atomic, Molecular, Optical and Plasma Physics
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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