Radiative electron capture by fully stripped channeled light ions

The cross sections for radiative electron capture (REC) into the [ital K] shell of bare and H-like light ions of [sup 12]C, [sup 16]O, [sup 19]F, and [sup 32]S are measured at different energies, under channeling conditions using a Si single crystal as target. These cross section data using differen...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 1994-01, Vol.49 (1), p.374-378
Main Authors: Tribedi, LC, Nanal, V, V, Press, MR, Kurup, MB, Prasad, KG, Tandon, PN
Format: Article
Language:English
Subjects:
664300 - Atomic & Molecular Physics- Collision Phenomena- (1992-)
ATOMIC AND MOLECULAR PHYSICS
ATOMS
CAPTURE
CARBON IONS
CHARGED PARTICLES
COLLISIONS
CRYSTALS
ELECTRON CAPTURE
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY DEPENDENCE
ENERGY RANGE
FLUORINE IONS
ION COLLISIONS
IONS
ISOELECTRONIC ATOMS
K SHELL
MEV RANGE
MEV RANGE 01-10
MONOCRYSTALS
OXYGEN IONS
SEMIMETALS
SILICON
SULFUR IONS
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Summary:The cross sections for radiative electron capture (REC) into the [ital K] shell of bare and H-like light ions of [sup 12]C, [sup 16]O, [sup 19]F, and [sup 32]S are measured at different energies, under channeling conditions using a Si single crystal as target. These cross section data using different projectiles are shown to fall on a universal curve when plotted against a scaled variable, the adiabaticity parameter [eta][sub [ital K]], of the collision systems. We have observed a definite difference in the cross section between the present solid target data and the available data for a gas target at the same [eta][sub [ital K]] value. This difference, along with the observed shift in the REC photopeak energy, suggests an ion-solid-state'' effect. Further, these observations, especially their [ital Z] dependence, are consistent with the predictions of the theory.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.49.374