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Emission of molecular fragments synthesized in hypervelocity nanoparticle impacts

Abstract : We report on experiments with Aun nanoparticles (100 ≤ n ≤ 400) at velocities of 10–60 km/s. They are implanted virtually intact via hydrodynamic penetration. The products of the extreme pressure transient are observed by mass analyzing the ionized ejecta. Targets of labeled molecules (13C-, 15N-glycine) reveal fragmentation–recombination processes, producing CN− and OCN− with high efficiency (45%). This value is over two orders of magnitude larger than that obtained with atomic and small cluster projectiles. The experiments could simulate collisions of nanosized dust particles in interstellar space.
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http://hal.in2p3.fr/in2p3-00421720
Contributor : Sophie Heurteau <>
Submitted on : Friday, October 2, 2009 - 4:39:27 PM
Last modification on : Wednesday, September 16, 2020 - 4:07:54 PM

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C. Guillermier, S. Della-Negra, E.A. Schweikert, A. Dunlop, G. Rizzac. Emission of molecular fragments synthesized in hypervelocity nanoparticle impacts. International Journal of Mass Spectrometry, Elsevier, 2008, 275, pp.86-90. ⟨10.1016/j.ijms.2008.05.023⟩. ⟨in2p3-00421720⟩

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