Systematics of single and double K-shell-vacancy production in titanium bombarded by heavy ions

Journal Article · Fri Jul 01 04:00:00 EDT 1983 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.28.99· OSTI ID:6047813

Hall, J; Richard, P; Gray, T J; Newcomb, J; Pepmiller, P; Lin, C D; Jones, K; Johnson, B; Gregory, D

The systematics of single and double K-shell-vacancy production in titanium has been investigated in the limit of zero target thickness (approx.1 ..mu..g/cm/sup 2/) for incident C, N, O, F, Mg, Al, Si, S, and Cl ions over a maximum energy range of 0.5 to 6.5 MeV/amu. This corresponds to collision systems with 0.27< or =Z/sub 1//Z/sub 2/< or =0.77 and 0.24< or =v/sub 1//vK< or =0.85, where v/sub 1/ is the projectile nuclear velocity and vK is the mean velocity of an electron in the target K shell. The present work is divided into four major sections. (1) Single K-shell-vacancy production has been investigated by measuring K..cap alpha.. and K..beta.. p satellite x-ray-production cross sections for projectiles incident with no K-shell vacancies. For incident ions with Z/sub 1/> or =9, the contribution due to electron-transfer processes from the target K shell to outer shells of the projectile has also been noted. (2) Single K-shell--to--K-shell electron-transfer cross sections have been obtained indirectly by the measuring of the enhancement in the Ti K x-ray production cross section for bare incident projectiles over ions incident with no initial K-shell vacancies. (3) Double K-vacancy production has been investigated by measuring the K..cap alpha.. hypersatellite intensity in ratio to the total K..cap alpha.. intensity. (4) Double K-shell--to--K-shell electron-transfer cross sections have been obtained indirectly with the use of a procedure similar to that used for single K to K transfer. The measured cross sections have been compared to theoretical models for direct Coulomb ionization and inner-shell electron transfer and have been used to investigate the relative importance of these mechanisms for K-vacancy production in heavy-ion--atom collisions.

• Research Organization: Department of Physics, Kansas State University, Manhattan, Kansas 66506
• OSTI ID: 6047813
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 28:1; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular &amp; Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALUMINIUM IONS
ATOM COLLISIONS
BORN APPROXIMATION
CARBON IONS
CHARGE TRANSPORT
CHARGED PARTICLES
CHLORINE IONS
COLLISIONS
CROSS SECTIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY RANGE
FILMS
FLUORINE IONS
INNER-SHELL IONIZATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
K SHELL
MAGNESIUM IONS
METALS
MEV RANGE
MEV RANGE 01-10
NITROGEN IONS
OXYGEN IONS
POINT DEFECTS
SILICON IONS
SPECTROSCOPY
SULFUR IONS
THIN FILMS
TITANIUM
TRANSITION ELEMENTS
VACANCIES
X-RAY SPECTROSCOPY