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![[Figure 2]](hf5277fig2mag.jpg)
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Figure 2
(a) Measured spectrum from polycrystalline diamond with q = 15.3 Å−1 [data taken from Huotari et al. (2012  )]. The response of the valence electrons is clearly visible as a broad peak centered at 950 eV. The inset depicts a zoom into the carbon K-edge region. (b) Dispersion of the valence electron response (blue curves). To clarify what we mean by `low', `medium' and `high' momentum transfer, the line is divided into three regions (solid blue for low and high momentum transfer, dashed for medium momentum transfer). The onset of the carbon K-edge is marked by the horizontal line at 290 eV energy loss. |
![[Figure 2]](hf5277fig2.jpg)
 | JOURNAL OF SYNCHROTRON RADIATION |
ISSN: 1600-5775
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