%0 Conference Proceedings %T Maturation grade of coal samples as revealed by raman spectroscopy %+ Laboratoire de Planétologie de Grenoble (LPG) %+ Laboratoire de géologie de l'ENS (LGENS) %+ Laboratoire de Sciences de la Terre (LST) %A Quirico, Eric %A Rouzaud, J.-N. %A Bonal, Lydie %A Montagnac, Gilles %< avec comité de lecture %( Lunar and Planetary Science XXXVI (2005) %B 36th Lunar and Planetary Science Conference %C Houston, United States %V 36 %N 1657 %P pp. 2 %8 2005 %D 2005 %Z Sciences of the Universe [physics]Conference papers %X Raman spectroscopy is a useful tool for studying Organic Matter in cometary grains and pristine chondrites. This study focused on the definition of optimized experimental parameters, and revealed sample photoinstability under laser irradiation. %G English %L insu-00356469 %U https://insu.hal.science/insu-00356469 %~ ENS-LYON %~ INSU %~ ENS-PARIS %~ UGA %~ CNRS %~ UNIV-GRENOBLE1 %~ UNIV-LYON1 %~ OSUG %~ PRUNEL %~ PSL %~ UDL %~ UNIV-LYON %~ LGENS %~ ENS-PSL