Measurements of Cu Atoms Diffusion Coefficients in He and Ne - Optimalisation of a Novel Method

• Authors: W. Kwaśniewski , K. Dzieciołowski , T. Adamowicz
• Languages of publication: EN

Abstracts

EN

A novel method based on two-pulse excitation of a hollow cathode discharge to determine metal atoms diffusion coefficients in noble gases was tested in Cu-He and Cu-Ne systems. The excitation conditions such as time duration of the discharge current pulses and configurations of the hollow cathode discharge were checked. Measurements carried out over the wide range gas pressures allowed obtaining the Cu atoms time-decay curves from which the diffusion coefficients were calculated. The values for Cu atom diffusion coefficients of 570 and 310 cm^2 s^{-1} mbar in He and Ne, respectively were in a good agreement with earlier reported data achieved by using the absorption spectroscopy method. The diffusion coefficient of Cu in ^3He, the lighter isotope of helium, was also found to be 670 cm^2 s^{-1} mbar that agreed well with the kinetic theory of gases. To authors believe this value was not reported previously.

Keywords

EN

42.55.Lt; 42.60.Lh; 52.80.-s

Discipline

• 52.80.-s: Electric discharges(see also 51.50.+v Electrical properties of gases; for plasma reactions including flowing afterglow and electric discharges, see 82.33.Xj in physical chemistry and chemical physics)
• 42.55.Lt: Gas lasers including excimer and metal-vapor lasers
• 42.60.Lh: Efficiency, stability, gain, and other operational parameters

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2002
• Volume: 102
• Issue: 6
• Pages: 747-757

Dates

published

2002-12

received

2002-07-05

Contributors

author

W. Kwaśniewski

• Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland

author

K. Dzieciołowski

• Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland

author

T. Adamowicz

• Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw, Poland

References

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Identifiers

DOI

10.12693/APhysPolA.102.747