Atomic resolution neutron holography (principles and realization)

László Cser, B. Faragó, G. Krexner, I. Sharkov, Gy Török

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Atomic resolution neutron holography constitutes a novel technique to obtain structural information. It is based on the recording of the interference of neutron waves coherently scattered by atoms located on a crystal lattice with a suitable reference wave. This process can be accomplished by two complementary schemes. In the frame of the first approach, a point-like source of spherical neutron waves is required inside a single crystal. Such a source can be realized owing to the extremely large value of the incoherent neutron scattering cross section of the proton. Hydrogen atoms imbedded in a sample which is placed in a monochromatic beam of slow neutrons will emit spherical neutron waves as a result of an incoherent scattering process. The interference between the undisturbed wave field and that part of the wave which is scattered by neighboring atoms can be recorded, thereby producing a hologram. The second approach utilizes a source of plane neutron waves outside the sample. The interference between the undisturbed and the scattered parts of the neutron wave field is recorded by point-like detectors, i.e. strongly neutron-absorbing nuclei, which are placed inside the crystal lattice that is to be imaged. The experimental feasibility of these two techniques is demonstrated.

Original languageEnglish
Pages (from-to)113-119
Number of pages7
JournalPhysica B: Condensed Matter
Volume350
Issue number4
DOIs
Publication statusPublished - Jul 30 2004

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Keywords

  • Atomic resolution
  • Neutron holography

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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