K-shell ionization of heavy atoms by 40--110-MeV. cap alpha. particles

Journal Article · Sat Oct 01 04:00:00 EDT 1977 · Phys. Rev., A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.16.1390· OSTI ID:7290691

Deconninck, G; Longree, M

Using intrinsic Ge as x-ray detector, K-shell ionization cross sections have been determined for Ho, Tm, Lu, Ta, W, Pt, Au, Pb, and Bi under bombardment with 40--110-MeV ..cap alpha.. particles. The target-atom K-shell ionization cross sections are compared with the predictions of different models. The agreement is considerably improved when relativistic effects are taken into account. Intensity ratios have also been measured and found to agree with previous determinations. X-ray satellite emission, following nuclear rearrangements, was also observed and a calculation made in the case of Ho to relate nuclear reactions and K x-ray production cross sections. Small peaks in the spectra of Au, Pb, and Bi have been tentatively attributed to double K-shell ionization, and hypersatellite energy is given for these atoms.

• Research Organization: Facultes Universitaires de Namur, 5000 Namur, Belgium
• OSTI ID: 7290691
• Journal Information: Phys. Rev., A; (United States), Journal Name: Phys. Rev., A; (United States) Vol. 16:4; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALPHA BEAMS
ATOM COLLISIONS
BEAMS
BISMUTH
COLLISIONS
CROSS SECTIONS
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY RANGE
GOLD
HELIUM 4 BEAMS
HOLMIUM
ION BEAMS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
K SHELL
LEAD
LUTETIUM
METALS
MEV RANGE
MEV RANGE 10-100
PLATINUM
PLATINUM METALS
RARE EARTHS
REFRACTORY METALS
SPECTRA
TANTALUM
THULIUM
TRANSITION ELEMENTS
TUNGSTEN
X-RAY SPECTRA