Mars Organic Molecule Analyzer (MOMA) - Harsh-Environment ...

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Why use an ion trap? ION Trap Selection 1. most compatible with external (atmospheric) ionization using laser desorption a. TOFs (and others) require very high vacuum and a means for sample introduction b. orthogonal TOFs can be used with external ionization but require very high pumping speed to achieve high vacuum 2. has the possibility for doing MS/MS for structural analysis 3. low power ion traps have been used successfully in GCMS configurations 12
<strong>MOMA</strong> Instrument Concept Design What are the specific challenges? 1. combining low voltage/low power with a sufficiently high mass range 2. transferring ions formed in the <strong>Mars</strong> environment into the vacuum chamber and the ion trap 3. accommodating two sources of ions: those generated externally by LD and those generated by the GC either internally or externally using electron ionization 13
Page 1 and 2: MOMA: Mars Organic Molecule Analyze
Page 3 and 4: Mission Timeline MSL Lander Discove
Page 5 and 6: Map of Mars showing H 2 O and Landi
Page 7 and 8: Viking Missions: What Happened? Vik
Page 9 and 10: Is there, or was there, life on Mar
Page 11: MOMA Science Requirements What are
Page 15 and 16: MOMA Instrument Concept Design Acco
Page 17 and 18: MOMA Prototype Design Concept Low v
Page 19 and 20: MOMA Mars Organic Molecule Analyzer
Page 21 and 22: Leu-enkephalin (YGGFL), m/z = 556.6
Page 23 and 24: MOMA GCMS Interface Count 3000 2000
Page 25 and 26: In Martian Analog Samples KT bounda
Page 27: Ultramark + CHCA_090619125632 # 1-4

Mars Organic Molecule Analyzer (MOMA) - Harsh-Environment ...

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