SPACE AND COSMIC RAY PHYSICS SEMINAR

When: Monday, February 25, 2013 4:30 PM - 5:30 PM
Where: Computer & Space Science : Coffee, Tea & Cookies 4:15-4:30 PM : 2400
Event Type(s): Seminar

Dr. John Krizmanic, CRESST/USRA/NASA/GSFC
Title: Phase Fresnel Lens Development for X-ray & Gamma-ray Astronomy

Angular resolution and effective area are two key parameters that define the performance of a telescope. Historically, X-ray and gamma-ray telescopes have not achieved the angular resolution and flux sensitivity possible at longer wavelengths due to the difficulty in collecting and focusing high-energy photons. Currently, the best imaging ability in the X-ray band is given by the Chandra telescope, which has achieved sub-arcsecond imaging below 10 keV. The use of diffractive optics, especially Phase Fresnel Lenses (PFLs), offers a path to significantly improved high-energy performance. In principle, PFLs can achieve diffraction-limited angular resolution, which is orders of magnitude better than the current state-of-the-art, with high throughput at X-ray and gamma-ray energies, and the capability of scaling to meter-size dimensions.

For more information, contact:
Debbie A. Jenkins
+1 301 405 4780




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