Abstract We report high-resolution measurements of natural photoelectron-enhanced plasma lines using a chirped (frequency modulated) transmitter pulse with the EISCAT UHF radar. Results from two different experiments are shown here. The first was run in May 1986 near solar minimum and the second was run in July–August 1989 near solar maximum. The enhanced detectability and time resolution of spectral plasma-line measurements are demonstrated. The frequency resolution allows for direct measurements of field-aligned electron currents larger than 10 μAm−2 at electron densities less than 2 10 11m−3. However, due to quiet ionospheric conditions, unambiguous current values of this size could not be measured from the present data.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Measurements of chirped natural plasma lines with EISCAT


    Contributors:

    Published in:

    Advances in Space Research ; 12 , 6 ; 231-234


    Publication date :

    1991-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    TOWARDS ROUTINE REAL-TIME SPACE DEBRIS MEASUREMENTS WITH EISCAT

    Markkanen, J. | British Library Conference Proceedings | 2005


    Naturally Enhanced Ion-Acoustic Lines Seen with the EISCAT Svalbard Radar

    Buchert, S. C. / Van Eyken, A. P. / Ogawa, T. et al. | British Library Conference Proceedings | 1999