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Vibronic fine structure in high-resolution x-ray absorption spectra from ion-bombarded boron nitride nanotubes
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10.1116/1.4798271
/content/avs/journal/jvsta/31/3/10.1116/1.4798271
http://aip.metastore.ingenta.com/content/avs/journal/jvsta/31/3/10.1116/1.4798271
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Figures

Image of FIG. 1.
FIG. 1.

Comparison of nitrogen K-edge NEXAFS spectra of an as-grown bamboo-like BNNT, recorded in PEY, and TEY modes. Both spectra are characterised by π* (P1, P2) and σ* (P3–P6) resonances.

Image of FIG. 2.
FIG. 2.

Nitrogen K-edge NEXAFS spectra recorded in three different modes and taken simultaneously from a BNNT sample after bombardment with 2 keV N2 + ions for 4 min. Fine structure around the top of π* resonances at around 401 eV is resolved in both PEY and TEY spectra.

Image of FIG. 3.
FIG. 3.

High-resolution NEXAFS of N (1s) π* peak of samples bombarded with 2 keV N2 + ions for 2 and 4 min.

Image of FIG. 4.
FIG. 4.

Vibrationally resolved NEXAFS data (closed circles) from Fig. 3 for 4 min bombardment, fitted with three sets of Voigt profiles, a, b, and c, for 2Σ, 2Δ and 2Σ+ states, respectively.

Image of FIG. 5.
FIG. 5.

N 1s core-level photoemission spectra (closed circles) obtained from an as-grown BNNT and the same sample after bombardment with 2 keV N2 + ions for 4 min. Solid lines are a numerical fit of experimental curves with a convolution of Lorentzians and Gaussians.

Image of FIG. 6.
FIG. 6.

Vibrationally resolved NEXAFS data from molecular nitrogen (closed circles) in ion-bombarded BNNT (2 keV N2 + for 4 min), measured across the TEY resonance P1 from Fig. 2 . Solid lines represent fitting using Voigt profiles.

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/content/avs/journal/jvsta/31/3/10.1116/1.4798271
2013-04-03
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Vibronic fine structure in high-resolution x-ray absorption spectra from ion-bombarded boron nitride nanotubes
http://aip.metastore.ingenta.com/content/avs/journal/jvsta/31/3/10.1116/1.4798271
10.1116/1.4798271
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