Authors: Bernard, Sylvain¹; Beyssac, Olivier²; Benzerara, Karim³

Source: Applied Spectroscopy, Volume 62, Issue 11, Pages 276A-318A and 1173-1284 (November 2008) , pp. 1180-1188(9)

Publisher: Society for Applied Spectroscopy

Abstract:

By allowing nondestructive chemical and structural imaging of heterogeneous samples with a micrometer spatial resolution, Raman mapping offers unique capabilities for assessing the spatial distribution of both mineral and organic phases within geological samples. Recently developed line-scanning Raman mapping techniques have made it possible to acquire Raman maps over large, millimeter-sized, zones of interest owing to a drastic decrease of the data acquisition time without losing spatial or spectral resolution. The synchronization of charge-coupled device (CCD) measurements with x,y motorized stage displacement has allowed dynamic line-scanning Raman mapping to be even more efficient: total acquisition time may be reduced by a factor higher than 100 compared to point-by-point mapping. Using two chemically and texturally complex geological samples, a fossil megaspore in a metamorphic rock and aragonite-garnet intergrowths in an Eclogitic marble, we compare here two recent versions of line-scanning Raman mapping systems and discuss their respective advantages and disadvantages in terms of acquisition time, image quality, spatial and imaging resolutions, and signal-to-noise ratio. We show that line-scanning Raman mapping techniques are particularly suitable for the characterization of such samples, which are representative of the general complexity of geological samples.

Keywords: LINE-SCANNING; RAMAN MAPPING; RAMAN MICROSPECTROSCOPY; METAMORPHISM; CARBONATES

Document Type: Research article

DOI: http://dx.doi.org/10.1366/000370208786401581

Affiliations: 1: Laboratoire de Géologie, Ecole Normale Supérieure - CNRS, Paris, France; IMPMC, CNRS, Département de Minéralogie IPGP, Université Paris 6 and 7, Paris, France 2: Laboratoire de Géologie, Ecole Normale Supérieure - CNRS, Paris, France 3: IMPMC, CNRS, Département de Minéralogie IPGP, Université Paris 6 and 7, Paris, France

Publication date: 2008-11-01

More about this publication?

• The Society publishes the internationally recognized, peer reviewed journal, Applied Spectroscopy, which is available both in print and online. Subscriptions are included with membership or can be purchased by institutional or corporate organizations. Abstracts may be viewed free of charge.
  
  Previously published as Bulletin (Society for Applied Spectroscopy)
• Editorial Board
• Information for Authors
• Submit a Paper
• Subscribe to this Title
• Membership Information
• Request copyrighted SAS materials
• Spectroscopic Nomenclature
• Focus Compendium
• ingentaconnect is not responsible for the content or availability of external websites

Related content

• In this: publication
• By this: publisher
• In this Subject: Analytical Chemistry
• By this author: Bernard, Sylvain ;  Beyssac, Olivier ;  Benzerara, Karim

Website © Publishing Technology. Article copyright remains with the publisher, society or author(s) as specified within the article.

• Terms and conditions
• Privacy policy
• Information for advertisers