Projectile charge and energy dependence of titanium K x rays and satellites following excitation by fast heavy ions

Journal Article · Thu Apr 01 00:00:00 EST 1976 · Phys. Rev., A, v. 13, no. 4, pp. 1334-1343

OSTI ID:4020081

Hill, K W; Doyle, B L; Shafroth, S M; Madison, D H; Deslattes, R D

High-resolution measurements have been made of Ti K$alpha$ x rays and satellites (KL/subn/, n = 0--4) following bombardment of thick Ti targets by H$sup +$, He/subn/$sup +$, Li/subn/$sup +$, C/subn/$sup +$, and O/subn/$sup +$ ions at energies of 1--5 MeV/amu. A systematic study was made of the effect of projectile atomic number Z$sub 1$ and energy E$sub 1$ upon the relative intensities, centroid energies, and widths of the various x-ray peaks. The intensity of the satellite structure relative to the diagram lines (K$alpha$$sub 1$, $alpha$$sub 2$) increases with increasing Z$sub 1$ for the same-velocity projectile up to Z$sub 1$ = 8. Both the Z$sub 1$ and E$sub 1$ dependence of these intensities agree reasonably well with a theoretical model described elsewhere. Deviations of peak intensities from theory are discussed. Centroid energies of the peaks increase approximately linearly with Z$sub 1$ at a rate of approx. 1 eV/Z. These energy shifts are compared with Hartree-Fock calculations of the x- ray energies for various members of M-shell (3s and 3p) electronic vacancies. Peak widths range from 10 to 37 eV, increasing monotonically with Z$sub 1$ for most peaks and increasing monotonically with n for all projectiles. No variation of centroid positions or peak widths was observed for different values of E$sub 1$ and fixed Z$sub 1$. The observed energy shifts and peak-width variations are discussed in terms of ionization of the M shell, varying distributions of L-shell vacancies among the 2s and 2p subshells, and possible multiplet splittings. (AIP)

• Research Organization: University of North Carolina, Chapel Hill, North Carolina 27514
• NSA Number: NSA-33-031165
• OSTI ID: 4020081
• Journal Information: Phys. Rev., A, v. 13, no. 4, pp. 1334-1343, Other Information: Orig. Receipt Date: 30-JUN-76
• Country of Publication: United States
• Language: English

Related Subjects

N60400* -Physics (Atomic & Molecular)-Collision Phenomena
640304* -Physics Research-Atomic
Molecular & Chemical Physics-Collision Phenomena
*TITANIUM- ION-ATOM COLLISIONS
CARBON IONS- MEV RANGE 10-100
ENERGY DEPENDENCE
HARTREE-FOCK METHOD
HELIUM IONS- MEV RANGE 10-100
HYDROGEN IONS 1 PLUS- MEV RANGE 01-10
LITHIUM IONS- MEV RANGE 10-100
X-RAY SPECTRA MEV RANGE 10-100- OXYGEN IONS