Title: Advances in the Mass Spectrometry Study of the Laser Vaporisation of Graphite
Citation: JOURNAL OF APPLIED PHYSICS vol. 104 p. 054902
Publication Year: 2008
JRC N°: JRC50008
ISSN: 0021-8979
URI: http://publications.jrc.ec.europa.eu/repository/handle/JRC50008
DOI: 10.1063/1.2973666
Type: Articles in periodicals and books
Abstract: Reliable experimental data on graphite vaporization and especially on carbon vapor composition exist only up to 2500¿3000 K. Data measured at higher temperatures are questionable due to several experimental limitations, such as the difficult temperature determination and the not straightforward correlation of measured temperatures and intensities of signals in mass spectra. That is why a new method of high-temperature mass spectrometry with laser vaporization was developed, in order to extend the accessible temperature range while overcoming these limitations and to shed more light on the still poorly known behavior of carbon at high temperatures. Thus, carbon sublimation relative partial pressures of the species C1, C2, C3, C4, and C5 were measured up to 4100 K. Moreover, the values of the relative vaporization coefficients of C1, C2, C3, C4, and C5, estimated by comparison of the experimentally obtained partial pressures with the predicted equilibrium ones, are proposed.
JRC Directorate:Nuclear Safety and Security

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