L -shell resonant transfer and excitation in niobium ions

Journal Article · Sun Jul 01 04:00:00 EDT 1990 · Physical Review, A (General Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevA.42.204· OSTI ID:6416215

Badnell, N R ^[1]

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1. Department of Physics, Auburn Unviersity, Auburn, AL (USA)

We have calculated {ital L}-shell cross sections for the process of resonant transfer excitation followed by x-ray stabilization (RTEX) in collisions of Nb{sup {ital q}+} ions ({ital q}=28--32) with H{sub 2}. The {ital LMn} plateau cross section is nearly constant ((4.5--5.2){times}10{sup {minus}20} cm{sup 2}) for {ital q}=29--32 and is consistent with the results of the recent experiment by Bernstein {ital et} {ital al}. (Phys. Rev. A 40, 4085 (1989)) for {ital q}=31 and 32, but our results for {ital q}=28--30 are substantially larger than experiment. For Ne-like niobium ({ital q}=31), the inclusion of RTEX contributions from higher transitions ({ital LNn}, {ital LOn}, etc.) leads to good agreement with the experiment by Bernstein {ital et} {ital al}. in the high-energy tail. This implies that only a small contribution is possible from the uncorrelated transfer excitation process.

• DOE Contract Number: FG05-86ER53217
• OSTI ID: 6416215
• Journal Information: Physical Review, A (General Physics); (USA), Journal Name: Physical Review, A (General Physics); (USA) Vol. 42:1; ISSN PLRAA; ISSN 0556-2791
• 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
ELECTROMAGNETIC RADIATION
ELECTRON TRANSFER
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY-LEVEL TRANSITIONS
EXCITATION
HYDROGEN
ION COLLISIONS
ION-MOLECULE COLLISIONS
IONIZING RADIATIONS
IONS
L SHELL
MOLECULE COLLISIONS
MULTICHARGED IONS
NIOBIUM IONS
NONMETALS
RADIATIONS
RESONANCE
X RADIATION