Calibration of the Large Area Mass Analyzer (LAMA) instrument for the detection of cosmic dust

Details Calibration of the Large Area Mass Analyzer (LAMA) instrument for the detection of cosmic dust Calibration of the Large Area Mass Analyzer (LAMA) instrument for the detection of cosmic dust

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufm.p51c1206a&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #P51C-1206

Other

6015 Dust, 6022 Impact Phenomena (5420, 8136), 6023 Comets: Dust Tails And Trails (6210), 6094 Instruments And Techniques, 6213 Dust

Scientific paper

A new instrument to analyze the chemical composition of dust particles in-situ in space has been developed. The large target area (0.25 m2) makes this instrument well suited for detecting a statistically significant number of interstellar dust grains or other dust particles with a low flux. The device is a reflectron type time-of- flight mass spectrometer that measures the ions from the impact generated plasma due to hypervelocity dust impacts onto a solid target surface. The laboratory model of the instrument has been fabricated and tested using a Nd:YAG laser. Here we report the first calibration measurements at the Heidelberg dust accelerator facility. The calibration is done using Fe and Ni projectiles of submicron sizes accelerated up to 40 km/s velocity and various target materials, including silver, brass, graphite and a small piece of the Allende meteorite. The experimental data show the characteristic mass spectra of the target and projectile materials. The mass resolution of the instrument is approximately m/Δm = 200. Project funded by NASA.

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