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A new method for focusing and imaging x-rays and gamma-rays with diffraction crystals
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Smither, R. K. |
| Copyright Year | 1981 |
| Description | Bent diffraction crystals in which the intercrystalline-plane spacing is varied as a function of position in the crystal are used to focus monochromatic radiation from a point source or parallel beam down to a point image. Conversely, radiation from a point source can be focused into an outgoing parallel beam. The Bragg angle for diffraction of monochromatic radiation will now vary as a function of position in the crystal and this new degree of freedom is used to obtain focusing and imaging of the diffracted beam. This approach to focusing and imaging is applied to the design of a large-area, high resolution X-ray telescope that is also a high resolution monochromator with the unique feature that the width of the energy increment that is diffracted can be controlled and varied during the operation of the instrument. The field can be scanned with a wide energy increment and then switched to a narrow energy increment for the high resolution work. Both transmission and reflection type diffraction crystals can be used. |
| File Size | 873159 |
| Page Count | 19 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19820018204 |
| Archival Resource Key | ark:/13960/t0vq7rn8x |
| Language | English |
| Publisher Date | 1981-11-01 |
| Access Restriction | Open |
| Subject Keyword | Optics Gamma Rays High Resolution Focusing Imaging Techniques X Ray Astronomy Bragg Angle X Ray Diffraction Crystal Optics Gamma Ray Astronomy X Ray Telescopes Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
