Formation of doubly excited two electron ions during F/sup 8 +/ + He, Ne, or Ar collisions

Thesis/Dissertation · Sat Jan 01 04:00:00 EST 1983

OSTI ID:6235653

Pepmiller, P L

High resolution x-ray spectroscopy has been used to measure the cross sections for forming doubly excited F/sup 7 +/ ions in the 2s2p and 2p/sup 2/ configurations following a F/sup 8 +/ + He, Ne, or Ar collision over the projectile energy range of 13 to 31 MeV. The intermediate states are found to be formed by projectile electron excitation coupled with target to projectile electron transfer to an excited state during a single ion-atom collision. This process is termed nonresonant transfer excitation. A competing process for formation of the doubly excited states observed is resonant transfer excitation, a process postulated to be analogus to dielectronic recombination. Although the projectile energies spanned the region where resonant transfer excitation is expected to maximize, no contribution to the measured cross sections was observed.

• Research Organization: Kansas State Univ., Manhattan (USA)
• OSTI ID: 6235653
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ARGON
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
FLUIDS
FLUORINE IONS
GASES
HELIUM
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
MEV RANGE
MEV RANGE 10-100
NEON
NONMETALS
RARE GASES
SPECTROSCOPY
X-RAY SPECTROSCOPY