Anisotropic two-body dissociation by highly charged ion impact

[摘要] The angular distribution of fragment emission with respect to the incoming beam direction is measured. In case of two body breakup of di-cationic molecular ions, such as D2O2+and2H2+2, a strong anisotropy is observed when one of the fragments is an H+or D+. These molecular ions were produced by impact of slow highly charged ions on neutral species. The technique of recoil ion momentum spectroscopy was used to measure the complete momentum vectors of all fragments in coincidence.

[发布机构] Department of Physics and Astrophysics, University of Delhi, Delhi; 110007, India^1;CIMAP, CEA-CNRS-ENSICAEN-UNICAEN, Normandie Université, BP5133, Caen Cedex 04; F-14050, France^2;Normandie Université, ENSICAEN, UNICAEN, CNRS/IN2P3, LPC Caen, Caen; 14000, France^3;Lawrence Berkley National Laboratory, Berkeley; CA; 94720, United States^4;Inter-University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi; 110067, India^5

[关键词] Beam direction;Fragment emission;Highly charged ions;Momentum vectors;Neutral species;Recoil ion momentum spectroscopy;Slow highly charged ions;Strong anisotropy