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Proceedings Paper

Four-Frame UV/X-Ray Picoframe II Framing Camera
Author(s): W. Sibbett; D. R. Walker; W. E. Sleat; R. T. Eagles; N. J. Freeman
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Paper Abstract

Electron-optical framing cameras having X-ray/XUV photosensitivities and which can provide a sequence of framed images in the subnanosecond regime are of major relevance and importance to the quantitative monitoring of the kinetics of laser-produced plasmas. Our Picoframe family of framing cameras which has been developed comprise specially designed image tubes that permit the recording of single or multiple frames in the picosecond domain. For instance, an experimental UV-sensitive Picoframe I camera system has been demonstrated to have temporal and spatial resolution of 100 ps, 8 1p/mm in single frame format and 250 ps, 8 1p/mm in a double-frame format having an interframe period between 1.5 ns and 2ns. In this presentation we will describe a double-aperture Picoframe II version of this camera and details will be given in respect of the performance of a demountable, UV-sensitive system. Particular emphasis will be devoted to its operation in a four-frame image format where the generation and implementation of appropriate deflection voltage profiles are especially significant. Experimental data will be presented to show that four discrete frames can be recorded with a frame period of 230 ps, interframe time of ns and a dynamic spatial resolution (referred to the photocathode) of 7 1p/mm. This spatial resolution was retained over the entire area of the 6 mm x mm image geometry at the photocathode. Such a UV-sensitive camera can be readily adapted for operation in the soft X-ray spectral region, as previously reported for the Picoframe I counterpart, and some of the projected performance characteristics will be discussed.

Paper Details

Date Published: 17 January 1990
PDF: 9 pages
Proc. SPIE 1155, Ultrahigh Speed and High Speed Photography, Photonics, and Videography '89: Seventh in a Series, (17 January 1990); doi: 10.1117/12.962444
Show Author Affiliations
W. Sibbett, University of St Andrews (Scotland)
D. R. Walker, University of St Andrews (Scotland)
W. E. Sleat, University of St Andrews (Scotland)
R. T. Eagles, AWE Aldermaston (England)
N. J. Freeman, AWE Aldermaston (England)


Published in SPIE Proceedings Vol. 1155:
Ultrahigh Speed and High Speed Photography, Photonics, and Videography '89: Seventh in a Series
Gary L. Stradling, Editor(s)

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