Excitation of atoms and molecules in collisions with highly charged ions. [Cyclotron Inst. , Texas A M Univ. , College Station, Texas]
A study of the double ionization of He by high-energy N[sup 7+] ions was extended up in energy to 40 MeV/amu. Coincidence time-of-flight studies of multicharged N[sub 2], O[sub 2], and CO molecular ions produced in collisions with 97-MeV Ar[sup 14+] ions were completed. Analysis of the total kinetic energy distributions and comparison with the available data for CO[sup 2+] and CO[sup 3+] from synchrotron radiation experiments led to the conclusion that ionization by Ar-ion impact populates states having considerably higher excitation energies than those accessed by photoionization. The dissociation fractions for CO[sup 1+] and CO[sup 2+] molecular ions, and the branching ratios for the most prominent charge division channels of CO[sup 2+] through CO[sup 7+] were determined from time-of-flight singles and coincidence data. An experiment designed to investigate the orientation dependence of dissociative multielectron ionization of molecules by heavy ion impact was completed. Measurements of the cross sections for K-shell ionization of intermediate-Z elements by 30-MeV/amu H, N, Ne, and Ar ions were completed. The cross sections were determined for solid targets of Z = 13, 22, 26, 29, 32, 40, 42, 46, and 50 by recording the spectra of K x rays with a Si(Li) spectrometer.
- Research Organization:
- Texas A and M Univ., College Station, TX (United States). Cyclotron Inst.
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG05-84ER13262
- OSTI ID:
- 6941493
- Report Number(s):
- DOE/ER/13262-9; ON: DE93007306
- Country of Publication:
- United States
- Language:
- English
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Excitation of atoms and molecules in collisions with fast, highly charged ions: Progress report for the period January 1, 1988 to February 28, 1989
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Related Subjects
74 ATOMIC AND MOLECULAR PHYSICS
ALUMINIUM
ARGON IONS
ATOM COLLISIONS
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CHARGED PARTICLES
COLLISIONS
COPPER
DOCUMENT TYPES
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FISSION FRAGMENTS
FLUIDS
GASES
GERMANIUM
HELIUM
HELIUM IONS
HYDROGEN IONS
ION COLLISIONS
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
IONS
IRON
METALS
MEV RANGE
MEV RANGE 10-100
MOLECULE COLLISIONS
MOLYBDENUM
MULTICHARGED IONS
NEON IONS
NITROGEN
NITROGEN IONS
NONMETALS
NUCLEAR FRAGMENTS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PALLADIUM
PLATINUM METALS
PROGRESS REPORT
RARE GASES
RESEARCH PROGRAMS
TIN
TITANIUM
TRANSITION ELEMENTS
ZIRCONIUM