Recent enhancements in the performance of the Orion high-resolution x-ray spectrometers
During the past few years, the Orion high-resolution x-ray spectrometers have been successful tools for measuring x-ray spectra from plasmas generated in the Orion laser facility. Duplicate spectrometers also operate successfully at the Livermore EBIT-I and SuperEBIT electron beam ion traps for meas...
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| Veröffentlicht in: | Review of scientific instruments 2021-04, Vol.92 (4), p.043507-043507 |
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| creator | Hell, N. Beiersdorfer, P. Brown, G. V. Lockard, T. E. Magee, E. W. Shepherd, R. Hoarty, D. J. Brown, C. R. D. Hill, M. P. Hobbs, L. M. R. James, S. F. Lynch, C. Caughey, T. A. |
| description | During the past few years, the Orion high-resolution x-ray spectrometers have been successful tools for measuring x-ray spectra from plasmas generated in the Orion laser facility. Duplicate spectrometers also operate successfully at the Livermore EBIT-I and SuperEBIT electron beam ion traps for measuring x-ray polarization. We have recently implemented very high-quality, optically bonded, spherically bent quartz crystals to remove the structure in the x-ray image that had been observed in earlier measurements. The structure had been caused by focusing defects and limited the accuracy of our measurements. We present before and after images that show a drastic improvement. We, furthermore, have implemented a spherically bent potassium acid phthalate (KAP) crystal on one of our spectrometers. The KAP crystal was prepared in a similar fashion, and we present measurements of the N Ly-β and Ne Lyβ lines taken in first- and second-order reflections at 600 and 1200 eV, respectively. These measurements confirm that KAP crystals can be produced at a quality suitable for extending the spectral coverage to wavelengths longer than those accessible by different quartz crystals, especially those that cover the astrophysically important lines of iron. |
| doi_str_mv | 10.1063/5.0043804 |
| format | Article |
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V. ; Lockard, T. E. ; Magee, E. W. ; Shepherd, R. ; Hoarty, D. J. ; Brown, C. R. D. ; Hill, M. P. ; Hobbs, L. M. R. ; James, S. F. ; Lynch, C. ; Caughey, T. A.</creator><creatorcontrib>Hell, N. ; Beiersdorfer, P. ; Brown, G. V. ; Lockard, T. E. ; Magee, E. W. ; Shepherd, R. ; Hoarty, D. J. ; Brown, C. R. D. ; Hill, M. P. ; Hobbs, L. M. R. ; James, S. F. ; Lynch, C. ; Caughey, T. A.</creatorcontrib><description>During the past few years, the Orion high-resolution x-ray spectrometers have been successful tools for measuring x-ray spectra from plasmas generated in the Orion laser facility. Duplicate spectrometers also operate successfully at the Livermore EBIT-I and SuperEBIT electron beam ion traps for measuring x-ray polarization. We have recently implemented very high-quality, optically bonded, spherically bent quartz crystals to remove the structure in the x-ray image that had been observed in earlier measurements. The structure had been caused by focusing defects and limited the accuracy of our measurements. We present before and after images that show a drastic improvement. We, furthermore, have implemented a spherically bent potassium acid phthalate (KAP) crystal on one of our spectrometers. The KAP crystal was prepared in a similar fashion, and we present measurements of the N Ly-β and Ne Lyβ lines taken in first- and second-order reflections at 600 and 1200 eV, respectively. These measurements confirm that KAP crystals can be produced at a quality suitable for extending the spectral coverage to wavelengths longer than those accessible by different quartz crystals, especially those that cover the astrophysically important lines of iron.</description><identifier>ISSN: 0034-6748</identifier><identifier>EISSN: 1089-7623</identifier><identifier>DOI: 10.1063/5.0043804</identifier><identifier>CODEN: RSINAK</identifier><language>eng</language><publisher>Melville: American Institute of Physics</publisher><subject>Crystal defects ; Crystal structure ; Electron beams ; High resolution ; Ion traps (instrumentation) ; Plasmas (physics) ; Quartz ; Quartz crystals ; Scientific apparatus & instruments ; X ray spectra ; X ray spectrometers</subject><ispartof>Review of scientific instruments, 2021-04, Vol.92 (4), p.043507-043507</ispartof><rights>U.S. Government</rights><rights>2021U.S. GovernmentPublished under license by AIP Publishing.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c382t-4c40579163f54e6550feeb3e243ee0221cf09d239e954d88cd6ff966694354843</cites><orcidid>0000-0003-3368-9011 ; 0000-0002-0391-0435 ; 0000-0003-3057-1536 ; 0000-0001-5122-7115 ; 0000-0002-9308-747X ; 0000-0002-1491-0983 ; 0000-0003-2113-6890 ; 0000-0001-6338-9445 ; 0000-0003-0127-599X ; 0000-0002-6697-2932 ; 0000-0002-0307-0624 ; 0000000330571536 ; 0000000214910983 ; 000000029308747X ; 000000030127599X ; 0000000203910435 ; 0000000333689011 ; 0000000151227115 ; 0000000203070624 ; 0000000163389445 ; 0000000266972932 ; 0000000321136890</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://pubs.aip.org/rsi/article-lookup/doi/10.1063/5.0043804$$EHTML$$P50$$Gscitation$$H</linktohtml><link.rule.ids>230,314,776,780,790,881,4498,27901,27902,76127</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/1773557$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Hell, N.</creatorcontrib><creatorcontrib>Beiersdorfer, P.</creatorcontrib><creatorcontrib>Brown, G. 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We have recently implemented very high-quality, optically bonded, spherically bent quartz crystals to remove the structure in the x-ray image that had been observed in earlier measurements. The structure had been caused by focusing defects and limited the accuracy of our measurements. We present before and after images that show a drastic improvement. We, furthermore, have implemented a spherically bent potassium acid phthalate (KAP) crystal on one of our spectrometers. The KAP crystal was prepared in a similar fashion, and we present measurements of the N Ly-β and Ne Lyβ lines taken in first- and second-order reflections at 600 and 1200 eV, respectively. 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| language | eng |
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| source | AIP Journals Complete; Alma/SFX Local Collection |
| subjects | Crystal defects Crystal structure Electron beams High resolution Ion traps (instrumentation) Plasmas (physics) Quartz Quartz crystals Scientific apparatus & instruments X ray spectra X ray spectrometers |
| title | Recent enhancements in the performance of the Orion high-resolution x-ray spectrometers |
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