X-ray characterization of thin foil gold mirrors of a soft X-ray telescope for ASTROSAT
Abstract X-ray reflectivity measurements were performed on several thin foil gold mirrors fabricated in TIFR for a Soft X-ray Imaging Telescope. The mirrors were made from thin aluminum foils with a reflecting layer of sputtered gold transferred from a smooth glass mandrel using an epoxy. X-ray refl...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Sagdeo, Archna [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2010 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer Science+Business Media B.V. 2010 |
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| Übergeordnetes Werk: |
Enthalten in: Experimental astronomy - Springer Netherlands, 1989, 28(2010), 1 vom: 07. Apr., Seite 11-23 |
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| Übergeordnetes Werk: |
volume:28 ; year:2010 ; number:1 ; day:07 ; month:04 ; pages:11-23 |
| Links: |
|---|
| DOI / URN: |
10.1007/s10686-010-9183-4 |
|---|
| Katalog-ID: |
OLC2042942197 |
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| 520 | |a Abstract X-ray reflectivity measurements were performed on several thin foil gold mirrors fabricated in TIFR for a Soft X-ray Imaging Telescope. The mirrors were made from thin aluminum foils with a reflecting layer of sputtered gold transferred from a smooth glass mandrel using an epoxy. X-ray reflectivity measurements were performed on a sample of randomly selected mirrors using $ CuK_{α} $ (8.05 keV), $ CrK_{α} $ (5.41 keV) X-rays and also at several energies in the energy range of 155–300 eV using the synchrotron source Indus-1. It was found that the roughness of the low-density top gold layer as obtained from the fitting of X-ray reflectivity data for $ CuK_{α} $ radiation is relatively more as compared to that obtained from the $ CrK_{α} $ radiation. This indicates that in the mirrors made by this process, the upper surfaces are smoother as compared to the deeper layers. It was also observed that the critical angle almost vanishes in the very low energy range of 290–300 eV due to strong absorption effects of the low density material sitting on top of these mirrors. Due to this absorption effect, efficiency of these mirrors reduces in this energy range. This is first time that reflectivity measurements are being reported for very soft X-rays (≤ 300 eV) for mirrors made for any X-ray astronomy mission. | ||
| 650 | 4 | |a X-ray telescope: ASTROSAT | |
| 650 | 4 | |a X-ray mirrors: reflectivity | |
| 700 | 1 | |a Rai, S. K. |4 aut | |
| 700 | 1 | |a Lodha, Gyan S. |4 aut | |
| 700 | 1 | |a Singh, K. P. |4 aut | |
| 700 | 1 | |a Yadav, Nisha |4 aut | |
| 700 | 1 | |a Dhawan, R. |4 aut | |
| 700 | 1 | |a Tonpe, Umesh |4 aut | |
| 700 | 1 | |a Vahia, M. N. |4 aut | |
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10.1007/s10686-010-9183-4 doi (DE-627)OLC2042942197 (DE-He213)s10686-010-9183-4-p DE-627 ger DE-627 rakwb eng 520 530 VZ 16,12 ssgn 39.00 bkl Sagdeo, Archna verfasserin aut X-ray characterization of thin foil gold mirrors of a soft X-ray telescope for ASTROSAT 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media B.V. 2010 Abstract X-ray reflectivity measurements were performed on several thin foil gold mirrors fabricated in TIFR for a Soft X-ray Imaging Telescope. The mirrors were made from thin aluminum foils with a reflecting layer of sputtered gold transferred from a smooth glass mandrel using an epoxy. X-ray reflectivity measurements were performed on a sample of randomly selected mirrors using $ CuK_{α} $ (8.05 keV), $ CrK_{α} $ (5.41 keV) X-rays and also at several energies in the energy range of 155–300 eV using the synchrotron source Indus-1. It was found that the roughness of the low-density top gold layer as obtained from the fitting of X-ray reflectivity data for $ CuK_{α} $ radiation is relatively more as compared to that obtained from the $ CrK_{α} $ radiation. This indicates that in the mirrors made by this process, the upper surfaces are smoother as compared to the deeper layers. It was also observed that the critical angle almost vanishes in the very low energy range of 290–300 eV due to strong absorption effects of the low density material sitting on top of these mirrors. Due to this absorption effect, efficiency of these mirrors reduces in this energy range. This is first time that reflectivity measurements are being reported for very soft X-rays (≤ 300 eV) for mirrors made for any X-ray astronomy mission. X-ray telescope: ASTROSAT X-ray mirrors: reflectivity Rai, S. K. aut Lodha, Gyan S. aut Singh, K. P. aut Yadav, Nisha aut Dhawan, R. aut Tonpe, Umesh aut Vahia, M. N. aut Enthalten in Experimental astronomy Springer Netherlands, 1989 28(2010), 1 vom: 07. Apr., Seite 11-23 (DE-627)130767123 (DE-600)1001704-5 (DE-576)023036176 0922-6435 nnns volume:28 year:2010 number:1 day:07 month:04 pages:11-23 https://doi.org/10.1007/s10686-010-9183-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-AST SSG-OPC-AST GBV_ILN_40 GBV_ILN_70 GBV_ILN_2012 GBV_ILN_4012 39.00 VZ AR 28 2010 1 07 04 11-23 |
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10.1007/s10686-010-9183-4 doi (DE-627)OLC2042942197 (DE-He213)s10686-010-9183-4-p DE-627 ger DE-627 rakwb eng 520 530 VZ 16,12 ssgn 39.00 bkl Sagdeo, Archna verfasserin aut X-ray characterization of thin foil gold mirrors of a soft X-ray telescope for ASTROSAT 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media B.V. 2010 Abstract X-ray reflectivity measurements were performed on several thin foil gold mirrors fabricated in TIFR for a Soft X-ray Imaging Telescope. The mirrors were made from thin aluminum foils with a reflecting layer of sputtered gold transferred from a smooth glass mandrel using an epoxy. X-ray reflectivity measurements were performed on a sample of randomly selected mirrors using $ CuK_{α} $ (8.05 keV), $ CrK_{α} $ (5.41 keV) X-rays and also at several energies in the energy range of 155–300 eV using the synchrotron source Indus-1. It was found that the roughness of the low-density top gold layer as obtained from the fitting of X-ray reflectivity data for $ CuK_{α} $ radiation is relatively more as compared to that obtained from the $ CrK_{α} $ radiation. This indicates that in the mirrors made by this process, the upper surfaces are smoother as compared to the deeper layers. It was also observed that the critical angle almost vanishes in the very low energy range of 290–300 eV due to strong absorption effects of the low density material sitting on top of these mirrors. Due to this absorption effect, efficiency of these mirrors reduces in this energy range. This is first time that reflectivity measurements are being reported for very soft X-rays (≤ 300 eV) for mirrors made for any X-ray astronomy mission. X-ray telescope: ASTROSAT X-ray mirrors: reflectivity Rai, S. K. aut Lodha, Gyan S. aut Singh, K. P. aut Yadav, Nisha aut Dhawan, R. aut Tonpe, Umesh aut Vahia, M. N. aut Enthalten in Experimental astronomy Springer Netherlands, 1989 28(2010), 1 vom: 07. Apr., Seite 11-23 (DE-627)130767123 (DE-600)1001704-5 (DE-576)023036176 0922-6435 nnns volume:28 year:2010 number:1 day:07 month:04 pages:11-23 https://doi.org/10.1007/s10686-010-9183-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-AST SSG-OPC-AST GBV_ILN_40 GBV_ILN_70 GBV_ILN_2012 GBV_ILN_4012 39.00 VZ AR 28 2010 1 07 04 11-23 |
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10.1007/s10686-010-9183-4 doi (DE-627)OLC2042942197 (DE-He213)s10686-010-9183-4-p DE-627 ger DE-627 rakwb eng 520 530 VZ 16,12 ssgn 39.00 bkl Sagdeo, Archna verfasserin aut X-ray characterization of thin foil gold mirrors of a soft X-ray telescope for ASTROSAT 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media B.V. 2010 Abstract X-ray reflectivity measurements were performed on several thin foil gold mirrors fabricated in TIFR for a Soft X-ray Imaging Telescope. The mirrors were made from thin aluminum foils with a reflecting layer of sputtered gold transferred from a smooth glass mandrel using an epoxy. X-ray reflectivity measurements were performed on a sample of randomly selected mirrors using $ CuK_{α} $ (8.05 keV), $ CrK_{α} $ (5.41 keV) X-rays and also at several energies in the energy range of 155–300 eV using the synchrotron source Indus-1. It was found that the roughness of the low-density top gold layer as obtained from the fitting of X-ray reflectivity data for $ CuK_{α} $ radiation is relatively more as compared to that obtained from the $ CrK_{α} $ radiation. This indicates that in the mirrors made by this process, the upper surfaces are smoother as compared to the deeper layers. It was also observed that the critical angle almost vanishes in the very low energy range of 290–300 eV due to strong absorption effects of the low density material sitting on top of these mirrors. Due to this absorption effect, efficiency of these mirrors reduces in this energy range. This is first time that reflectivity measurements are being reported for very soft X-rays (≤ 300 eV) for mirrors made for any X-ray astronomy mission. X-ray telescope: ASTROSAT X-ray mirrors: reflectivity Rai, S. K. aut Lodha, Gyan S. aut Singh, K. P. aut Yadav, Nisha aut Dhawan, R. aut Tonpe, Umesh aut Vahia, M. N. aut Enthalten in Experimental astronomy Springer Netherlands, 1989 28(2010), 1 vom: 07. Apr., Seite 11-23 (DE-627)130767123 (DE-600)1001704-5 (DE-576)023036176 0922-6435 nnns volume:28 year:2010 number:1 day:07 month:04 pages:11-23 https://doi.org/10.1007/s10686-010-9183-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-AST SSG-OPC-AST GBV_ILN_40 GBV_ILN_70 GBV_ILN_2012 GBV_ILN_4012 39.00 VZ AR 28 2010 1 07 04 11-23 |
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10.1007/s10686-010-9183-4 doi (DE-627)OLC2042942197 (DE-He213)s10686-010-9183-4-p DE-627 ger DE-627 rakwb eng 520 530 VZ 16,12 ssgn 39.00 bkl Sagdeo, Archna verfasserin aut X-ray characterization of thin foil gold mirrors of a soft X-ray telescope for ASTROSAT 2010 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer Science+Business Media B.V. 2010 Abstract X-ray reflectivity measurements were performed on several thin foil gold mirrors fabricated in TIFR for a Soft X-ray Imaging Telescope. The mirrors were made from thin aluminum foils with a reflecting layer of sputtered gold transferred from a smooth glass mandrel using an epoxy. X-ray reflectivity measurements were performed on a sample of randomly selected mirrors using $ CuK_{α} $ (8.05 keV), $ CrK_{α} $ (5.41 keV) X-rays and also at several energies in the energy range of 155–300 eV using the synchrotron source Indus-1. It was found that the roughness of the low-density top gold layer as obtained from the fitting of X-ray reflectivity data for $ CuK_{α} $ radiation is relatively more as compared to that obtained from the $ CrK_{α} $ radiation. This indicates that in the mirrors made by this process, the upper surfaces are smoother as compared to the deeper layers. It was also observed that the critical angle almost vanishes in the very low energy range of 290–300 eV due to strong absorption effects of the low density material sitting on top of these mirrors. Due to this absorption effect, efficiency of these mirrors reduces in this energy range. This is first time that reflectivity measurements are being reported for very soft X-rays (≤ 300 eV) for mirrors made for any X-ray astronomy mission. X-ray telescope: ASTROSAT X-ray mirrors: reflectivity Rai, S. K. aut Lodha, Gyan S. aut Singh, K. P. aut Yadav, Nisha aut Dhawan, R. aut Tonpe, Umesh aut Vahia, M. N. aut Enthalten in Experimental astronomy Springer Netherlands, 1989 28(2010), 1 vom: 07. Apr., Seite 11-23 (DE-627)130767123 (DE-600)1001704-5 (DE-576)023036176 0922-6435 nnns volume:28 year:2010 number:1 day:07 month:04 pages:11-23 https://doi.org/10.1007/s10686-010-9183-4 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-PHY SSG-OLC-AST SSG-OPC-AST GBV_ILN_40 GBV_ILN_70 GBV_ILN_2012 GBV_ILN_4012 39.00 VZ AR 28 2010 1 07 04 11-23 |
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Sagdeo, Archna |
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520 530 VZ 16,12 ssgn 39.00 bkl X-ray characterization of thin foil gold mirrors of a soft X-ray telescope for ASTROSAT X-ray telescope: ASTROSAT X-ray mirrors: reflectivity |
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X-ray characterization of thin foil gold mirrors of a soft X-ray telescope for ASTROSAT |
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X-ray characterization of thin foil gold mirrors of a soft X-ray telescope for ASTROSAT |
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Sagdeo, Archna |
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Experimental astronomy |
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Sagdeo, Archna Rai, S. K. Lodha, Gyan S. Singh, K. P. Yadav, Nisha Dhawan, R. Tonpe, Umesh Vahia, M. N. |
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x-ray characterization of thin foil gold mirrors of a soft x-ray telescope for astrosat |
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X-ray characterization of thin foil gold mirrors of a soft X-ray telescope for ASTROSAT |
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Abstract X-ray reflectivity measurements were performed on several thin foil gold mirrors fabricated in TIFR for a Soft X-ray Imaging Telescope. The mirrors were made from thin aluminum foils with a reflecting layer of sputtered gold transferred from a smooth glass mandrel using an epoxy. X-ray reflectivity measurements were performed on a sample of randomly selected mirrors using $ CuK_{α} $ (8.05 keV), $ CrK_{α} $ (5.41 keV) X-rays and also at several energies in the energy range of 155–300 eV using the synchrotron source Indus-1. It was found that the roughness of the low-density top gold layer as obtained from the fitting of X-ray reflectivity data for $ CuK_{α} $ radiation is relatively more as compared to that obtained from the $ CrK_{α} $ radiation. This indicates that in the mirrors made by this process, the upper surfaces are smoother as compared to the deeper layers. It was also observed that the critical angle almost vanishes in the very low energy range of 290–300 eV due to strong absorption effects of the low density material sitting on top of these mirrors. Due to this absorption effect, efficiency of these mirrors reduces in this energy range. This is first time that reflectivity measurements are being reported for very soft X-rays (≤ 300 eV) for mirrors made for any X-ray astronomy mission. © Springer Science+Business Media B.V. 2010 |
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Abstract X-ray reflectivity measurements were performed on several thin foil gold mirrors fabricated in TIFR for a Soft X-ray Imaging Telescope. The mirrors were made from thin aluminum foils with a reflecting layer of sputtered gold transferred from a smooth glass mandrel using an epoxy. X-ray reflectivity measurements were performed on a sample of randomly selected mirrors using $ CuK_{α} $ (8.05 keV), $ CrK_{α} $ (5.41 keV) X-rays and also at several energies in the energy range of 155–300 eV using the synchrotron source Indus-1. It was found that the roughness of the low-density top gold layer as obtained from the fitting of X-ray reflectivity data for $ CuK_{α} $ radiation is relatively more as compared to that obtained from the $ CrK_{α} $ radiation. This indicates that in the mirrors made by this process, the upper surfaces are smoother as compared to the deeper layers. It was also observed that the critical angle almost vanishes in the very low energy range of 290–300 eV due to strong absorption effects of the low density material sitting on top of these mirrors. Due to this absorption effect, efficiency of these mirrors reduces in this energy range. This is first time that reflectivity measurements are being reported for very soft X-rays (≤ 300 eV) for mirrors made for any X-ray astronomy mission. © Springer Science+Business Media B.V. 2010 |
| abstract_unstemmed |
Abstract X-ray reflectivity measurements were performed on several thin foil gold mirrors fabricated in TIFR for a Soft X-ray Imaging Telescope. The mirrors were made from thin aluminum foils with a reflecting layer of sputtered gold transferred from a smooth glass mandrel using an epoxy. X-ray reflectivity measurements were performed on a sample of randomly selected mirrors using $ CuK_{α} $ (8.05 keV), $ CrK_{α} $ (5.41 keV) X-rays and also at several energies in the energy range of 155–300 eV using the synchrotron source Indus-1. It was found that the roughness of the low-density top gold layer as obtained from the fitting of X-ray reflectivity data for $ CuK_{α} $ radiation is relatively more as compared to that obtained from the $ CrK_{α} $ radiation. This indicates that in the mirrors made by this process, the upper surfaces are smoother as compared to the deeper layers. It was also observed that the critical angle almost vanishes in the very low energy range of 290–300 eV due to strong absorption effects of the low density material sitting on top of these mirrors. Due to this absorption effect, efficiency of these mirrors reduces in this energy range. This is first time that reflectivity measurements are being reported for very soft X-rays (≤ 300 eV) for mirrors made for any X-ray astronomy mission. © Springer Science+Business Media B.V. 2010 |
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X-ray characterization of thin foil gold mirrors of a soft X-ray telescope for ASTROSAT |
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