Population of highly excited intermediate resonance states by electron transfer and excitation

Journal Article · Wed May 01 04:00:00 EDT 1991 · Physical Review, A; (USA)

DOI:https://doi.org/10.1103/PhysRevA.43.5180· OSTI ID:5467191

Schuch, R ^[1]; Justiniano, E ^[2]; Schulz, M; Datz, S; Dittner, P F; Giese, J P; Krause, H F; Schoene, H; Vane, R ^[3]; Shafroth, S ^[4]

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1. Manne Siegbahn Institute of Physics, S-104 05 Stockholm, Sweden (SE)
2. Department of Physics, East Carolina University, Greenville, North Carolina 27858-4353 (USA)
3. Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6377 (USA)
4. Department of Physics, North Carolina University, Chapel Hill, North Carolina 27599-3255 (USA)

Coincidences between two sulfur {ital K} x rays were detected from collisions of hydrogenlike S ions with H{sub 2} gas in the projectile energy range between 150 and 225 MeV. These {ital K} x rays are emitted in the decay of doubly excited states formed in the collisions via transfer and excitation. The excitation function for two coincident {ital K}{beta} transitions peaks at about 175 MeV, slightly above the expected {ital KMM} resonance energy for resonant transfer and excitation (RTE). This demonstrates the occurrence of {Delta}{ital N}{ge}2 transitions (i.e., {ital KMM} and higher resonances) in the RTE process. The cross sections for the population of the very highly excited states are higher than those predicted by theoretical calculations that use dielectronic recombination rates folded with the Compton profile for the bound electrons.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5467191
• Journal Information: Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 43:9; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EXCITATION
HYDROGEN
INTERMEDIATE RESONANCE
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONS
MEV RANGE
MEV RANGE 100-1000
MOLECULE COLLISIONS
NONMETALS
RESONANCE
SPECTRA
SULFUR IONS
X-RAY SPECTRA