Measurement of kinetic energy release in CO fragmentation by charge-changing collisions of fast heavy ions

Journal Article · Fri Jan 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.012704· OSTI ID:21388729

Mizuno, T; Yamada, T ^[1]; Tsuchida, H; Itoh, A ^[1]; Nakai, Y ^[2]

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1. Department of Nuclear Engineering, Kyoto University, Kyoto 606-8501 (Japan)
2. RIKEN Nishina Center, Wako, Saitama 351-0198 (Japan)

We study ionization and fragmentation of CO in electron loss and capture collisions of B{sup 2+}, O{sup 2+}, and Si{sup 2+} ions at an energy of 71.4 keV/u (v=1.69 a.u.). Coincidence measurements of fragment ions from CO and charge-selected ions were performed by means of a momentum three-dimensional imaging technique. Production cross sections of CO{sup r+} and branching ratios into various fragmentation channels were obtained for r=1-4. We also measured kinetic energy release (KER) in individual fragmentation channels. The KER spectra for r<=2 are found to be different for electron loss and capture collisions, while the difference becomes small for r>=3. As a measure of the degree of molecular fragmentation, the magnitude of the binding energy of the relevant electronic states seems the important parameter both in loss and capture collisions.

• OSTI ID: 21388729
• Journal Information: Physical Review. A, Vol. 81, Issue 1; Other Information: DOI: 10.1103/PhysRevA.81.012704; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BINDING ENERGY
BRANCHING RATIO
CAPTURE
CARBON MONOXIDE
COLLISIONS
CROSS SECTIONS
ELECTRON LOSS
FRAGMENTATION
HEAVY IONS
IONIZATION
KEV RANGE
KINETIC ENERGY
LOSSES
OXYGEN IONS
SILICON IONS
SPECTRA
THREE-DIMENSIONAL CALCULATIONS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
DIMENSIONLESS NUMBERS
ENERGY
ENERGY RANGE
IONS
OXIDES
OXYGEN COMPOUNDS