Multiple ionization and fragmentation of polyatomic molecules by fast heavy ions

We investigated molecular fragmentation for CO, C2H2 and C60 molecules induced by impact of various fast heavy ions. Fragment ions produced in electron capture and loss collisions of projectile ions were measured in coincidence with final projectile charge states. As for C60 target, the number distr...

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Bibliographic Details
Published in:Journal of physics. Conference series 2011-04, Vol.288 (1), p.012027-9
Main Authors: Itoh, A, Mizuno, T, Majima, T
Format: Article
Language:English
Subjects:
Beta decay
Buckminsterfullerene
Carbon monoxide
Charge
Collisions
Electron capture
Fragmentation
Fullerenes
Heavy ions
Ions
Kinetic energy
Orientation effects
Physics
Polyatomic molecules
Position sensing
Projectiles
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Summary:We investigated molecular fragmentation for CO, C2H2 and C60 molecules induced by impact of various fast heavy ions. Fragment ions produced in electron capture and loss collisions of projectile ions were measured in coincidence with final projectile charge states. As for C60 target, the number distribution of secondary electrons emitted in single collision event were also measured by means of a triple coincident method. The charge state distribution of transiently formed Cr+60 was successfully reproduced by our new model calculation on the basis of statistical energy deposition model developed for polyatomic molecules. Data acquisition using position sensitive detection system allows us to obtain 3D momentum imaging of fragment ions from CO and C2H2 molecules. Typical results relevant to molecular orientation effect and kinetic energy release (KER) are discussed.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/288/1/012027