Deep-ultraviolet Raman spectra of Mars-relevant evaporite minerals under 248.6 nm excitation

Deep ultraviolet resonance Raman excitation enables explosives detection.

We measured the 229 nm absolute ultraviolet (UV) Raman cross-sections of the explosives trinitrotoluene (TNT), pentaerythritol tetranitrate (PETN), cyclotrimethylene-trinitramine (RDX), the chemically related nitroamine explosive HMX, and ammonium nitrate in solution. The 229 nm Raman cross-sections are 1000-fold greater than those excited in the near-infrared and visible spectral regions. Deep...

Time-resolved Raman Spectroscopy of Mars Analog Minerals and Organics

1 , Y. Maruyama 1 , E. Alerstam 1 , C. Cochrane 1 , G.R.Rossman 2 , S. Shkolyar 3 , J. Farmer 3 , 1 Jet Propulsion Laboratory, California Institute of Technology, 4800 Oak Grove Dr., Pasadena, CA 91109, [email protected], 2 California Institute of Technology, Division of Geological and Planetary Sciences, Pasadena, California 91125, [email protected]. 3 School of Earth and Space...

Compact Solid-State 213 nm Laser Enables Standoff Deep Ultraviolet Raman Spectrometer: Measurements of Nitrate Photochemistry.

We describe a new compact acousto-optically Q-switched diode-pumped solid-state (DPSS) intracavity frequency-tripled neodymium-doped yttrium vanadate laser capable of producing ~100 mW of 213 nm power quasi-continuous wave as 15 ns pulses at a 30 kHz repetition rate. We use this new laser in a prototype of a deep ultraviolet (UV) Raman standoff spectrometer. We use a novel high-throughput, high...

Mars-Relevant Phosphate Minerals and Implications for Martian Habitability

......................................................................................................................iii ACKNOWLEDGEMENTS ................................................................................................ v LIST OF TABLES .............................................................................................................xi LIST OF FIGURES ...................

Raman Spectra of Water Bearing Minerals at Different Enironmental