The TESP electron spectrometer and correlator (F7) on Freja
Boehm, M. ; Paschmann, G. ; Clemmons, J. ; Höfner, H. ; Frenzel, R. ; Ertl, M. ; Haerendel, G. ; Hill, P. ; Lauche, H. ; Eliasson, L. ; Lundin, R.
Springer
Published 1994
Springer
Published 1994
| ISSN: |
1572-9672
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract The two-dimensional electron spectrometer onFreja consists of a ‘top-hat’-type electrostatic analyzer with the addition of entrance aperture deflection plates. The field of view of the concentric-hemisphere analyzer is modified from a plane to a cone up to 25° from this plane by application of bipolar high voltages to the deflection plates. Fast high-voltage sweeps allow full 10 eV–25 KeV, 500-point distribution function measurements in 32 ms. Constant-energy or limited energy-sweep modes allow time resolutions down to 1 ms. A set of electronics combines the electron data with F4 wave data to allow on-board calculations of cross-correlations between electron fluxes and wave electric fields. Additionally, a fast signal processor is capable of searching the electron pulse sequence from one or several channeltrons for high-frequency modulations in the electron flux.
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| Type of Medium: |
Electronic Resource
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| URL: |