ramantitle2.gif (19077 bytes)

Members ] What's New ] Photo Album ] Publications ] Raman Project ] Lunar Project ]

Advanced BrassBoard of MMRS

The probe and spectrograph have been redesigned with improved optics that provide improved spectral resolution and enable a probe design more compatible with robotic arm deployment.

Electronics have been miniaturized.

Optical fibers & protective sheath passed cold tests.

A TEC cooled CCD was added to enable field testing.

Hardware

working probe spectrograph miniaturized electronics

Optical fiber cold test

optical fibers protected in stainless steel capillary optical fiber twist test at -40˚C optical fiber stretching test at -70˚C

 

Whole system cold test at National Ice Core Laboratory

national ice core lab -- exam room using the advanced Brassboard of MMRS to exam ice core from Greenland Obtained ice Raman spectra

 

Sensitivity & Spectral Resolution

The ADBB has a detection sensitivity ~40% that of our state-of-the-art laboratory Raman system, twice that of previous MMRS brassboard BB1d.
a much improved spectral resolution

Depth of Sampling field

The depth of sampling field varies with mineral color and grain size

Improved general performance

Spectrum of calcite from fine powder (1-5 μm)
Spectrum of calcite from a  highly fluorescent sample
Spectrum of beta-carotene from a biogenetic sample

Point-counting measurements on rocks

Rock samples & % of informative spectra typical spectra

Reference: Haskin et al., abstract # 1651 for 34th LPSC (2003)

FAQs ] Overview ] Missions ] [ Current brassboard ] Instrument ] Applications ]

Wu_Epsc_banner.gif (6631 bytes)