FRESNEL ZONE PLATE IMAGING OF GAMMA RAYS; THEORY.

Harrison H Barrett, F. A. Horrigan

Research output: Contribution to journalArticle

112 Citations (Scopus)

Abstract

The general theory of coded-aperture imaging is presented, first for an arbitrary code and then for an on-axis zone plate, an off-axis zone plate, and a one-dimensional zone plate (or linear chirp). With the on-axis plate, a matched imaging condition is suggested as a guide to optimizing image contrast. With the off-axis zone plate and the linear chirp, it is necessary to use a half-tone screen to spatially heterodyne the object spectrum into the passband of the aperture. In all three cases, expressions for the resolution, depth of field, field of view, and relative efficiency are derived. A simplified noise analysis is presented, and some practical system constraints are discussed. Pertinent to the imaging of radioisotopes in the body.

Original languageEnglish (US)
Pages (from-to)2686-2702
Number of pages17
JournalApplied Optics
Volume12
Issue number11
StatePublished - Nov 1973
Externally publishedYes

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Gamma rays
gamma rays
Imaging techniques
chirp
Radioisotopes
apertures
image contrast
field of view

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

FRESNEL ZONE PLATE IMAGING OF GAMMA RAYS; THEORY. / Barrett, Harrison H; Horrigan, F. A.

In: Applied Optics, Vol. 12, No. 11, 11.1973, p. 2686-2702.

Research output: Contribution to journalArticle

Barrett, HH & Horrigan, FA 1973, 'FRESNEL ZONE PLATE IMAGING OF GAMMA RAYS; THEORY.', Applied Optics, vol. 12, no. 11, pp. 2686-2702.
Barrett, Harrison H ; Horrigan, F. A. / FRESNEL ZONE PLATE IMAGING OF GAMMA RAYS; THEORY. In: Applied Optics. 1973 ; Vol. 12, No. 11. pp. 2686-2702.
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