Endothermal fine-structure transition of metastable argon atoms passing through a micro-slit copper gratingJ. C. Karam, M. Boustimi, J. Baudon, M. Ducloy, F. Perales, J. Reinhardt, V. Bocvarski, C. Mainos, F. Levron and J. RobertEurophys. Lett., 60 2 (2002) 207-213DOI: https://doi.org/10.1209/epl/i2002-00340-1