RAMAN SPECTRA OF SEVEN INTERPLANETARY DUST PARTICLES
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摘要: The Raman Shift Spectra of seven interplanetary dust particles,U2034 (F10),U2034(F8),U2022(B1),W7074 18,W7074 C15,W7074 C3 and W7074 A7,were measured with a Spex-1403 Raman Spectrograph.The exciting radiations were the 488 nm and 514 nm line of a 5W argon ion laser.All seven spectra exhibit the 1350 and 1600 Δcm-1 arbon bands,implying that the IDPS were coated with hydrocarbon and incompletely crystallized carbon,the part of which may be the residue of hydro-carbon contents in the particles after water loss by the heating during their entry into the earth’s atmosphere.A weak band structure in the 520-610 cm-1 range could be caused by cyclosilicates,and a weak band at 2900 cm-1 is tentatively identified as due to hydrocarbon molicules.Abstract: The Raman Shift Spectra of seven interplanetary dust particles,U2034 (F10),U2034(F8),U2022(B1),W7074 18,W7074 C15,W7074 C3 and W7074 A7,were measured with a Spex-1403 Raman Spectrograph.The exciting radiations were the 488 nm and 514 nm line of a 5W argon ion laser.All seven spectra exhibit the 1350 and 1600 Acm-1 arbon bands,implying that the IDPS were coated with hydrocarbon and incompletely crystallized carbon,the part of which may be the residue of hydro-carbon contents in the particles after water loss by the heating during their entry into the earth’s atmosphere.A weak band structure in the 520-610 cm-1 range could be caused by cyclosilicates,and a weak band at 2900 cm-1 is tentatively identified as due to hydrocarbon molicules.
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Key words:
- Interplanetary Dust Particles /
- Raman Spectra /
- Carbon
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