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Volumn 64, Issue 8, 1990, Pages 938-941

High-resolution incoherent imaging of crystals

Author keywords

[No Author keywords available]

Indexed keywords


EID: 11944259078     PISSN: 00319007     EISSN: None     Source Type: Journal    
DOI: 10.1103/PhysRevLett.64.938     Document Type: Article
Times cited : (543)

References (25)
  • 10
    • 84927389706 scopus 로고    scopus 로고
    • For a review of previous applications, see M. M. J. Treacy and S. B. Rice, J. Microsc. (to be published);
  • 11
    • 84927389705 scopus 로고    scopus 로고
    • Pennycock, Berger, and Culbertson, Ref. 7.
  • 12
    • 84927389704 scopus 로고    scopus 로고
    • This is an overstringent requirement since the coherent component at high scattering angles also results in similar image characteristics, D. E. Jesson and S. J. Pennycook (to be published).
  • 18
    • 84927389703 scopus 로고    scopus 로고
    • Images are calculated for an objective-lens spherical-aberration coefficient Cs= 1.3 mm with optimum illumination angle, (4 λ / Cs)1/4, and defocus, - ( Csλ )1/2 (λ = 2 π / chi), using 1315 incident orientations. 63 and 91 beams were used at 100- and 300-kV accelerating voltage, respectively.
  • 19
    • 84927389702 scopus 로고    scopus 로고
    • At high defocus values the probe shows strong subsidiary maxima which can result in reversed images, although showing much weaker contrast.
  • 21
    • 84927389701 scopus 로고    scopus 로고
    • The contrast was difficult to measure due to noise limitations, but appeared weaker than expected. This could be due to a number of effects including the neglect of the high-angle scattering from absorbed electrons, probe instabilities, or probe broadening in an amorphous surface layer.
  • 22
    • 84927389700 scopus 로고    scopus 로고
    • M. Born and E. Wolf, Principles of Optics (Pergamon, Oxford, 1986), 6th ed., p. 415.
  • 23
    • 84927389699 scopus 로고    scopus 로고
    • The total coherently scattered intensity in the high-order Laue-zone reflections is less than 1% of the total intensity reaching the annular detector.
  • 25
    • 84927389698 scopus 로고    scopus 로고
    • In principle, this would also allow the possibility of energy-filtered incoherent images.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.