IMPRS June 2003. The principle of time-of-flight (TOF) instruments From the 3 independently measured quantities (E/q, τ, E total ) the 3 desired quantities.

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Presentation transcript:

IMPRS June 2003

The principle of time-of-flight (TOF) instruments From the 3 independently measured quantities (E/q, τ, E total ) the 3 desired quantities E, q, m can be uniquely derived. Ulysses SWICS

IMPRS June 2003 The first TOF measurements revealed: There are two populations of oxygen ions in the magnetosphere: highly ionized (from solar wind) and singly ionized (from the ionosphere)

IMPRS June 2003 The SWICS instrument on Ulysses

IMPRS June 2003 The CTOF instrument on SOHO

IMPRS June 2003 The CTOF instrument on SOHO

IMPRS June 2003 Electrostatic analyzer TOF analyzer

IMPRS June 2003 The solar wind element composition as revealed by modern TOF instrumentation on SOHO

IMPRS June 2003 The solar wind element composition as revealed by modern TOF instrumentation on SOHO

IMPRS June 2003 Elemental abundances and the FIP effect The solar wind element composition as revealed by modern TOF instrumentation on SOHO

IMPRS June 2003 ROSINA/RTOF auf ROSETTA Reflektron-Time-of-Flight-Spektrometer Instrument parameters Mass range: amu Mass resolution m/  m=500 (1% Level) High time resolution by simultaneous mesurement of different masses

IMPRS June 2003 ROSINA/RTOF auf ROSETTA Reflektron-Time-of-Flight-Spektrometer Comparison of a mass spectrum obtained with the IMS-HIS sensor at comet Halley with a laboratory spectrum obtained by RTOF on the Rosetta mission

IMPRS June 2003 Time-of-flight analyzer with a floatable drift tube Simultaneous energy distribution and ion/neutral fraction measurements using a linear time-of- flight

IMPRS June 2003 E!!B energy-mass spectrograph for measurement of ions and neutral atoms

IMPRS June 2003 Mass spectroscopy using a rotating electric field time-of-flight phase E