Cluster Ion Imaging of the Paris Meteorite
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1 Cluster Ion Imaging of the Paris Meteorite M. Noun 1,2, B. Nsouli 2, D. Baklouti 3, R. Brunetto 3, L. d Hendecourt 3 and S. Della-Negra 1 1 : Institut de Physique Nucléaire d Orsay, Université Paris Sud 2 : Lebanese Atomic Energy Commission, National Council for Scientific Research 3 : Institut d Astrophysique Spatiale, CNRS, Université Paris-Sud 1
2 Context and objectives Results : Cluster SIMS imaging µ-ir and µ-raman spectroscopy Conclusion and perspectives 2
3 Paris METEORITE Bought by Jean-Jacques Corré at the Hotel des Ventes in Paris 5 cm 3 mm Determination of its composition Distribution of these components in their environment 3
4 epth µm PIXE and µ-pixe Elemental composition (Z >1) Crystal composition µm RBS Light elements in heavy matrix : C and O Elemental analysis µm µ-ir and µ-raman Identification of: Minerals Aromatic carbons nm Dynamic SIMS Static SIMS Identification, localization and environment: Elements Minerals and organic compounds 4
5 Experimental techniques Bi, Bi 3 and Bi 3 2 delivered by ION TOF V : LAEC-CNRSL Dual beams Ar 1 and Bi 3 Static (< 1 13 cm -2 ) and dynamic mode Positive and negative emission mode Reflectron time of flight Analysis depth : ~ nm 5
6 Prevalence of oxygen and sodium O - Na O- MC: 5; TC: 2.222e7 4 Na MC: 5; TC: 2.362e7 4 Some elements are located in a specific area of the surface Ca Si C x H Mg y Ca MC: 5; TC: 6.647e6 4 Si MC: 12; TC: 1.21e6 4 Mg MC: 5; TC: 1.161e7 4 4 Sum of: C2H5, CH2, CH3O, C3H5, , 71. MC: 228; TC: 9.49e5 6
7 Calcium area Positive Negative Ca oxides CaOH Ca OH O Sum of: CaOH, Ca2O, Ca2O2, Ca2O2H, Ca3O3 MC: 322; TC: 1.71e6 CaOH MC: 38; TC: 1.61e6 4 4 Ca MC: 5; TC: 6.647e6 Ca O- MC: 5; TC: 2.222e7 4 4 OH- MC: 5; TC: 1.319e7 S oxides S Ca MC: 5; TC: 6.647e6 4 S- MC: 243; TC: 2.36e6 4 4 Sum of: SO-, SO2-, SO3-, SO4- MC: 284; TC: 1.446e Sum : CaSO -, CaSO 2-, CaSO 3-, CaSO 4-, CaSO 4 H Sum of: CaSO4-, CaSO3-, CaSO-, CaSO2- MC: 19; TC: 1.142e5 7
8 Silicon area Different forms of silicon 4 Si 1 4 Si Si MC: 12; TC: 1.21e SiOH SiO Si- MC: 19; TC: 7.881e Existence of silicon in various compounds and environments SiHO MC: 25; TC: 2.867e5 4 SiO2- MC: 81; TC: 1.52e6 4 8
9 Magnesium area 4 4 Inside the chondrule, except in the emitting surface of Si Around the chondrule, associated to the SiO emission Mg MC: 5; TC: 1.161e Other points with a high concentration 8 associated to the emission of Si and SiHO Si- MC: ; TC: 7.881e Si MC: 12; TC: 1.21e6 4 SiO2- MC: 4 SiHO 81; TC: 1.52e6 MC: 25; TC: 2.867e
10 Confocal reflection NicPlan microscope, coupled to a FTIR spectrometer 2 4 cm -1 resolution Olivine: (Mg,Fe) 2 [SiO 4 ] 1
11 Forsterite Mg 2 SiO 4 Laser 532 nm P =,3-1mW spot ~ 2 Enstatite MgSiO 3 DXR Raman spectrometer 11
12 Organic area Fragment ions CN - CNO CN- MC: 382; TC: 1.382e6 4 CNO- MC: 77; TC: 4.285e Sum of: C2H5, CH2, CH3O, C3H5, , 71. MC: C x H 228; y TC: 9.49e5 12
13 Organic area Fe O C x H y Sum of: C2H5, CH2, CH3O, C3H5, , 71. MC: 228; TC: 9.49e5 Fe MC: 5; TC: 7.679e6 4 O- MC: 5; TC: 2.222e7 4 Correlation between organics and iron Anti-correlation between organics and oxygen 13
14 ToF-SIMS imaging µ-ir reflectance C x H y C-H vibration band is weak: Reflectance mode Low concentration in organics 14
15 CN CN- MC: 382; TC: 1.382e CNO CNO- MC: 77; TC: 4.285e5 15
16 N C /Shots N C /Shots 1 Bi : a reference to the depth estimation 1E-3 1E-4 Zone 1 Zone 2 Zone 3 Zone 4 Zone 5 Zone 6 Zone 7 d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o 1E-3 d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o 1E-5 Zone 3 Zone 4 Zone 5 Zone 6 Zone 7 d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o 1E-4 d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o d e m o 1E d e m o d e m o d e m o d e m o d e m o Time analysis (s) d e m o d e m o d e m o d e m o d e m o 1E Time analysis (s) 16
17 17
18 18
19 Bi 4 Bi m (MgO 2 H 2 ) n Bi 5 m=2 8 n=1,2 1 Bi 6 Bi 7 Bi m/z 19
20 Counts Ca 2 O 2 H Ca 2 O CaO Ca 3 O 3 H CaO Ca 3 O 2 CaO Ca 4 O 4 H CaO CaO CaO Ca 5 O 5 H Ca 6 O 6 H CaO CaO CaO Ca 7 O 7 H CaO Ca 7 O 6 m/z 2
21 Counts Ca 8 O 7 Ca 8 O 8 H CaO Ca 9 O 8 Ca 9 O 9 H CaO Ca CaO 1 O 1 H Ca 1 O 9 CaO Ca 11 O 1 Ca 11 O 11 H CaO CaO Ca 12 O 11 Ca 12 O 12 H Ca 13 O 12 CaO CaO CaO Ca 14 O 13 21
22 Counts Ca 15 O 14 CaO Ca 16 O 15 CaO Ca 17 O 16 CaO Ca 18 O 17 m/z m/z 22
23 C x H y C o H p O x = 1 to19 and y = 1 to 15 NH 4 C q H r N C s H t NO Valine Leucine Phenylalanine Glycine Proline Alanine CH 3 O C m H n NO 2 23
24 Cluster SIMS : a powerful tool for mapping of organics and minerals µ-raman µ-ir µ-pixe Cluster-SIMS RBS PIXE Identification, localization and chemical environment of : Elements. Minerals and organic compounds. Identification of minerals and aromatic carbons. Elemental composition (Z >1), C, O and crystals 24
25 25
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27 SiH C 2 H 5 CHO 27
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