Measurement of electron-impact--excitation cross sections for very highly charged ions

Journal Article · Mon Apr 25 00:00:00 EDT 1988 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.60.1715· OSTI ID:5228412

Marrs, R E; Levine, M A; Knapp, D A; Henderson, J R

We report the first measurements of electron-impact--excitation cross sections for very highly charged ions (Ba/sup 46 +/), and introduce a powerful new technique for studying these ions. Approximately 2 x 10/sup 4/ Ba/sup 46 +/ ionscm were trapped inside the space charge of an approx. =120-mA electron beam and their x-ray emission spectra observed with Si(Li) and Bragg-crystal--diffraction spectrometers. Cross sections for several N = 3 levels excited from the neonlike Ba/sup 46 +/ ground state were measured relative to radiative recombination on the same ions

• Research Organization: University of California, Lawrence Livermore National Laboratory, Livermore, California 94550
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5228412
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 60:17
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BARIUM IONS
ELECTRON-ION COLLISIONS
EXCITED STATES
ELECTRON BEAMS
TRAPPING
X-RAY SPECTRA
CROSS SECTIONS
BRAGG REFLECTION
CHARGE STATE
GROUND STATES
LUMINESCENCE
RECOMBINATION
SPACE CHARGE
BEAMS
CHARGED PARTICLES
COLLISIONS
ELECTRON COLLISIONS
ENERGY LEVELS
ION COLLISIONS
IONS
LEPTON BEAMS
PARTICLE BEAMS
REFLECTION
SPECTRA
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena