A 30 - 300 Ghz broad band dispersive Fourier transform spectrometer for the direct measurement of complex dielectric permittivity and magnetic permeability

1990 ◽  
Author(s):  
Hua Chi
Keyword(s):  
Fourier Transform ◽  
Dielectric Permittivity ◽  
Direct Measurement ◽  
Magnetic Permeability ◽  
Broad Band ◽  
Complex Dielectric Permittivity ◽  
Fourier Transform Spectrometer

Complex Dielectric Permittivity and Magnetic Permeability of Fe/Fe3O4Composite Particles in 2–18 GHz

2012 ◽  
Vol 434 (1) ◽  
pp. 77-82 ◽  
Author(s):  
R. B. Yang ◽  
W. F. Liang ◽  
C. C. Chang ◽  
C. K. Lin ◽  
S. T. Liu ◽  
...  
Keyword(s):  
Dielectric Permittivity ◽  
Magnetic Permeability ◽  
Complex Dielectric Permittivity

scholarly journals Broad-band spectroscopy with the James Clerk Maxwell Telescope using a polarizing Fourier transform spectrometer

1993 ◽  
Vol 260 (4) ◽  
pp. 875-882 ◽  
Author(s):  
D. A. Naylor ◽  
T. A. Clark ◽  
G. R. Davis ◽  
W. D. Duncan ◽  
G. J. Tompkins
Keyword(s):  
Fourier Transform ◽  
Broad Band ◽  
Fourier Transform Spectrometer ◽  
James Clerk Maxwell

scholarly journals Solar 5-minute Oscillations at 2.23 μm

1994 ◽  
Vol 154 ◽  
pp. 271-276
Author(s):  
Torben Leifsen
Keyword(s):  
Time Series ◽  
Fourier Transform ◽  
Near Infrared ◽  
Broad Band ◽  
Solar Observatory ◽  
Fourier Transform Spectrometer ◽  
Large Intensity ◽  
National Solar Observatory ◽  
Long Run ◽  
The Fourier Transform

Large amplitude solar 5-min intensity oscillations have recently been detected at 2.23 μm using broad band (650 Å FWHM) photometry (Leifsen and Maltby, 1990). Large intensity amplitudes in a broad range in the near infrared was unexpected, and several questions concerning the source of the high amplitudes were raised. In an attempt to study the nature of these oscillations, time series of spectra have been obtained with the Fourier Transform Spectrometer (FTS) of the McMath telescope at National Solar Observatory at Kitt Peak. We present preliminary results from a 10 day long run in May 1991 in support for the suggestion that the results may be useful in both helio- and asteroseismological investigations.

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