A novel approach to generating time of flight mass spectra for low energy neutral atom detection

Details A novel approach to generating time of flight mass spectra for low energy neutral atom detection A novel approach to generating time of flight mass spectra for low energy neutral atom detection

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009agufmsm11b1575k&link_type=abstract

American Geophysical Union, Fall Meeting 2009, abstract #SM11B-1575

Physics

[2776] Magnetospheric Physics / Polar Cap Phenomena, [2794] Magnetospheric Physics / Instruments And Techniques

Scientific paper

Low energy neutral atom detectors traditionally use a surface to convert the neutrals into negative ions. The negative ions are then accelerated with an acceleration potential of at least 15 keV to allow them to penetrate a thin carbon foil used to create the start signal for a time of flight (TOF) spectrometer. The 15 keV accelerating potential prevents energy straggling and trajectory scattering in the carbon foil. Power supplies for the high voltage potentials are mass and power drivers for any such instruments. An additional design consideration is the suppression of secondary electrons generated at the conversion surface by the neutral atoms and incident UV photons. If the secondary electrons from the conversion process can be separated from the photo electrons, it would be possible to use them as a start signal, eliminating the carbon foil and acceleration potential. We have investigated using secondary electrons generated by the conversion process as the start signal for the TOF measurement, eliminating the need for the acceleration potential. We will present results from a proof of concept configuration, preliminary instrument design with simulations.

Affiliated with

Also associated with

No associations

Rating

A novel approach to generating time of flight mass spectra for low energy neutral atom detection does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A novel approach to generating time of flight mass spectra for low energy neutral atom detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A novel approach to generating time of flight mass spectra for low energy neutral atom detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1877489