Selection of CVD Diamond Crystals for X-ray Monochromator Applications Using X-ray Diffraction Imaging
A set of 20 single crystal diamond plates synthesized using chemical vapor deposition (CVD) was studied using X-ray diffraction imaging to determine their applicability as side-bounce (single-reflection) Laue monochromators for synchrotron radiation. The crystal plates were of optical grade (as prov...
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| Format: | Article |
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MDPI AG
2019-07-01
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| Series: | Crystals |
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| Online Access: | https://www.mdpi.com/2073-4352/9/8/396 |
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| author | Stanislav Stoupin Thomas Krawczyk Zunping Liu Carl Franck |
| author_facet | Stanislav Stoupin Thomas Krawczyk Zunping Liu Carl Franck |
| author_sort | Stanislav Stoupin |
| collection | DOAJ |
| description | A set of 20 single crystal diamond plates synthesized using chemical vapor deposition (CVD) was studied using X-ray diffraction imaging to determine their applicability as side-bounce (single-reflection) Laue monochromators for synchrotron radiation. The crystal plates were of optical grade (as provided by the supplier) with (001) nominal surface orientation. High dislocation density was found for all samples. Distortions in the crystal lattice were quantified for low-index Laue reflections of interests using rocking curve topography. Maps of effective radius of curvature in the scattering plane were calculated using spline interpolation of the rocking curve peak position across the studied plates. For several selected plates, nearly flat regions with large effective radius of curvature were found (<inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>R</mi> <mn>0</mn> </msub> <mo>≳</mo> <mn>30</mn> <mo>−</mo> <mn>70</mn> </mrow> </semantics> </math> </inline-formula> m, some regions as large as 1 × 4 mm<inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mn>2</mn> </msup> </semantics> </math> </inline-formula>). The average width of the rocking curve for these regions was found to be about 150 <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">μ</mi> </semantics> </math> </inline-formula>rad (r.m.s.). These observations suggest that the selected CVD diamond plates could be used as intermediate-bandwidth monochromators refocusing the radiation source to a specific location downstream with close to 1:1 distance ratio. |
| first_indexed | 2024-04-11T13:08:32Z |
| format | Article |
| id | doaj.art-a46c0f7556334d859cbd23a3e31fb7b2 |
| institution | Directory Open Access Journal |
| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-11T13:08:32Z |
| publishDate | 2019-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Crystals |
| spelling | doaj.art-a46c0f7556334d859cbd23a3e31fb7b22022-12-22T04:22:39ZengMDPI AGCrystals2073-43522019-07-019839610.3390/cryst9080396cryst9080396Selection of CVD Diamond Crystals for X-ray Monochromator Applications Using X-ray Diffraction ImagingStanislav Stoupin0Thomas Krawczyk1Zunping Liu2Carl Franck3Cornell High Energy Synchrotron Source, Cornell University, Ithaca, NY 14853, USACornell High Energy Synchrotron Source, Cornell University, Ithaca, NY 14853, USAAdvanced Photon Source, Argonne National Laboratory, Lemont, IL 60439, USACornell High Energy Synchrotron Source, Cornell University, Ithaca, NY 14853, USAA set of 20 single crystal diamond plates synthesized using chemical vapor deposition (CVD) was studied using X-ray diffraction imaging to determine their applicability as side-bounce (single-reflection) Laue monochromators for synchrotron radiation. The crystal plates were of optical grade (as provided by the supplier) with (001) nominal surface orientation. High dislocation density was found for all samples. Distortions in the crystal lattice were quantified for low-index Laue reflections of interests using rocking curve topography. Maps of effective radius of curvature in the scattering plane were calculated using spline interpolation of the rocking curve peak position across the studied plates. For several selected plates, nearly flat regions with large effective radius of curvature were found (<inline-formula> <math display="inline"> <semantics> <mrow> <msub> <mi>R</mi> <mn>0</mn> </msub> <mo>≳</mo> <mn>30</mn> <mo>−</mo> <mn>70</mn> </mrow> </semantics> </math> </inline-formula> m, some regions as large as 1 × 4 mm<inline-formula> <math display="inline"> <semantics> <msup> <mrow></mrow> <mn>2</mn> </msup> </semantics> </math> </inline-formula>). The average width of the rocking curve for these regions was found to be about 150 <inline-formula> <math display="inline"> <semantics> <mi mathvariant="sans-serif">μ</mi> </semantics> </math> </inline-formula>rad (r.m.s.). These observations suggest that the selected CVD diamond plates could be used as intermediate-bandwidth monochromators refocusing the radiation source to a specific location downstream with close to 1:1 distance ratio.https://www.mdpi.com/2073-4352/9/8/396CVD diamondX-ray monochromatorsynchrotron radiation |
| spellingShingle | Stanislav Stoupin Thomas Krawczyk Zunping Liu Carl Franck Selection of CVD Diamond Crystals for X-ray Monochromator Applications Using X-ray Diffraction Imaging Crystals CVD diamond X-ray monochromator synchrotron radiation |
| title | Selection of CVD Diamond Crystals for X-ray Monochromator Applications Using X-ray Diffraction Imaging |
| title_full | Selection of CVD Diamond Crystals for X-ray Monochromator Applications Using X-ray Diffraction Imaging |
| title_fullStr | Selection of CVD Diamond Crystals for X-ray Monochromator Applications Using X-ray Diffraction Imaging |
| title_full_unstemmed | Selection of CVD Diamond Crystals for X-ray Monochromator Applications Using X-ray Diffraction Imaging |
| title_short | Selection of CVD Diamond Crystals for X-ray Monochromator Applications Using X-ray Diffraction Imaging |
| title_sort | selection of cvd diamond crystals for x ray monochromator applications using x ray diffraction imaging |
| topic | CVD diamond X-ray monochromator synchrotron radiation |
| url | https://www.mdpi.com/2073-4352/9/8/396 |
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