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Negative ion productions in high velocity collision between small carbon clusters and Helium atom target

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, , Citation Chabot M et al 2012 J. Phys.: Conf. Ser. 388 102036 DOI 10.1088/1742-6596/388/10/102036

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1 Institut de Physique Nucléaire d'Orsay, IN2P3-CNRS, Université Paris-Sud, 91406 Orsay, France

2 Institut des Sciences Moléculaire d'Orsay, CNRS, Université Paris-Sud, 91405 Orsay, France

3 Centre de Spectroscopie Nucl. et de Spectrométrie de Masse, IN2P3-CNRS, Université Paris-Sud, 91406 Orsay, France

4 Centre d'Etude Spatiale des Rayonnements, CNRS, Université Paul Sabatier, 31028 Cedex9 Toulouse, France

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1742-6596/388/10/102036

Abstract

We measured absolute double capture cross section of Cn+ ions (n=1,5) colliding, at 2.3 and 2.6 a.u velocities, with an Helium target atom and the branching ratios of fragmentation of the so formed electronically excited anions Cn−*. We also measured absolute cross section for the electronic attachment on neutral Cn clusters colliding at same velocities with He atom. This is to our knowledge the first measurement of neutral-neutral charge exchange in high velocity collision.

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10.1088/1742-6596/388/10/102036