SCIENTIFIC AND TECHNICAL AEROSPACE REPORTS
A Biweekly Publication of the National Aeronautics and Space Administration
VOLUME 43, ISSUE 26 - DECEMBER 30, 2005
89 ASTRONOMY
Includes observations of celestial bodies; astronomical instruments and techniques; radio, gamma-ray, x-ray, ultraviolet, and infrared astronomy; and astrometry.
20050243657 Lawrence Livermore National Lab., Livermore, CA USA
Physics and Advanced Technologies LDRD Final Report:Adaptive Optics Imaging and Spectroscopy of the Solar System
Gibbard, S. G.; Macintosh, B. A.; Max, C. E.; Grossman, A.; Jan. 30, 2004; 16 pp.; In English Report No.(s): DE2005-15013952; UCRL-TR-202110; No Copyright; Avail.: National Technical Information Service (NTIS)
No abstract available
Adaptive Optics; Haze; Hydrocarbons; Imaging Techniques; Planets; Solar System; Spectroscopy
20050244905 Lawrence Livermore National Lab., Livermore, CA USA
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Downstream System for the Second Axix of the Darht Facility
Chen, Y.-J.; Jul. 15, 2004; 12 pp.; In English Report No.(s): DE2005-15013574; UCRL-JC-147739; No Copyright; Avail.: National Technical Information Service (NTIS)
This paper presents the physics design of the DARHT-II downstream system, which consists of a diagnostic beam stop, a fast high-precision kicker system and the x-ray converter target assembly.
The beamline configuration, the transverse resistive wall instability and the ion hose instability modeling are presented.
We also discuss elimination of spot size dilution during kicker switching and implementation of the foil barrier scheme to minimize the backstreaming ion focusing effects.
Finally, we present the target converter's configuration, and the simulated DARHT-II x-ray spot sizes and doses.
Some experimental results, which support the physics design, will be also presented. NTIS
Radiography; X Rays
Source: NASA.
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