Isotope shift of the electron affinity of carbon measured by photodetachment microscopy

2016/01/14 by David Bresteau, Cyril Drag, Christophe Blondel · 2 citations
Materials Science · Chemistry · Physics and Astronomy · #Diamond and Carbon-based Materials Research #Mass Spectrometry Techniques and Applications #Advanced Chemical Physics Studies #Electron #Isotope #Atomic physics #Physics #Imaging phantom #Carbon fibers #Materials science #Nuclear physics #Optics

paper · doi:10.1103/physreva.93.013414

openalex publication_date 2016/01/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The electron affinity of carbon is measured on a beam of C^\ensuremath- by photodetachment microscopy, with a precision increased by one order of magnitude with respect to the last measurement. Isotopes 12 and 13 are used in succession, which makes it possible to determine the isotope shift of the electron affinity of carbon. The obtained result, about \ensuremath-7.3(6)\phantom\rule0.16em0exm^\ensuremath-1, corroborates recent calculations of this shift. The electron affinities of ¹²C and ¹³C are 1\phantom\rule0.16em0ex017\phantom\rule0.16em0ex970.5(10) and 1\phantom\rule0.16em0ex017\phantom\rule0.16em0ex963.3(10)\phantom\rule0.16em0exm^\ensuremath-1, i.e., 1.262\phantom\rule0.16em0ex122\phantom\rule0.16em0ex6(11) and 1.262\phantom\rule0.16em0ex113\phantom\rule0.16em0ex6(12) eV, respectively.

Citations

• Atomic negative ions: structure, dynamics and collisions
• Theoretical study for the electron affinities of negative ions with the MCDHF method
• Threshold photodetachment ofH−
• Photodetachment microscopy to an excited spectral term and the electron affinity of phosphorus
• Electron affinities of16O,17O,18O,the fine structure of16O−,and the hyperfine structure of17O−
• High-resolution determination of the electron affinity of fluorine and bromine using crossed ion and laser beams
• Isotope shift in the electron affinity of chlorine
• Pulsed photodetachment microscopy and the electron affinity of iodine
• Binding Energies in Atomic Negative Ions: III

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• Accurate electron affinity of Co and fine-structure splittings ofCo−via slow-electron velocity-map imaging
• Electron affinity (data page) [wikipedia]