Investigations into electronic stoppping regime sputtering of uranium tetrafluoride
Thesis/Dissertation
·
OSTI ID:6699097
Yields were measured for /sup 235/U sputtered from UF/sub 4/ by /sup 16/O, /sup 19/F, and /sup 35/Cl over the energy range ca.12 to 1.5 MeV/amu using a charge equilibrated beam in the stripped beam arrangement for all the incident ions and in the transmission arrangement for /sup 19/F and /sup 35/Cl. In addition, yields were measured for /sup 19/F incident in a wide range of discrete charge states. The angular dependence of all the measured yields were consistent with cos theta. The stripped beam and transmission data were well fit by the form (Az/sup 2//sub eq/1n(B..sigma..)/..sigma../sup 4/ where ..sigma.. was the ion energy in MeV/amu and Z/sub eq/(..sigma..) was taken from Zeigler (80). The fitted values of B for the various sets of data were consistent with a constant B/sub 0/ equal to 36.3 +- 2.7, independent of incident ion. The fitted values of A show no consistent variation with incident ion although a difference can be noted between the stripped beam and transmission values, the transmission values being higher. The incident charge data were well fit by the assumptions that the sputtering yield depended locally on a power of the incident ion charge and that the sputtering from the surface is exponentially correlated to conditions in the bulk. The equilibrated sputtering yields derived from these data are in agreement with the stripped beam yields.
- Research Organization:
- California Inst. of Tech., Pasadena (USA)
- OSTI ID:
- 6699097
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACTINIDE COMPOUNDS
BEAMS
CHLORINE 35 BEAMS
COLLISIONS
COMPARATIVE EVALUATIONS
DATA
ENERGY RANGE
EXPERIMENTAL DATA
FLUORIDES
FLUORINE 19 BEAMS
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
ION BEAMS
KEV RANGE
KEV RANGE 100-1000
MEV RANGE
MEV RANGE 01-10
NUMERICAL DATA
OXYGEN 16 BEAMS
SPUTTERING
URANIUM COMPOUNDS
URANIUM FLUORIDES
URANIUM TETRAFLUORIDE
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACTINIDE COMPOUNDS
BEAMS
CHLORINE 35 BEAMS
COLLISIONS
COMPARATIVE EVALUATIONS
DATA
ENERGY RANGE
EXPERIMENTAL DATA
FLUORIDES
FLUORINE 19 BEAMS
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INFORMATION
ION BEAMS
KEV RANGE
KEV RANGE 100-1000
MEV RANGE
MEV RANGE 01-10
NUMERICAL DATA
OXYGEN 16 BEAMS
SPUTTERING
URANIUM COMPOUNDS
URANIUM FLUORIDES
URANIUM TETRAFLUORIDE