Experimental determination of the neutron channeling length in a planar waveguide

S. V. Kozhevnikov, V. K. Ignatovich, F. Ott, A. Rühm, J. Major

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

In neutron waveguides, the neutron wave is confined inside the guiding layer of the structure and can escape from the layer edge as a microbeam. The channeling within the guiding layer is accompanied by an exponential decay of the neutron wave function density inside the waveguide. Here, we report direct determination of the corresponding decay constant, termed the neutron channeling length. For this, we measured the microbeam intensity as a function of the length of a neutron absorbing layer of variable length placed onto the surface of a waveguide structure. Such planar neutron waveguides transform a conventional neutron beam into an extremely narrow but slightly divergent microbeam, which can be used for the investigation of nanostructures with submicron spatial resolution.

Original languageEnglish
Pages (from-to)636-640
Number of pages5
JournalJournal of Experimental and Theoretical Physics
Volume117
Issue number4
DOIs
Publication statusPublished - Oct 2013

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waveguides
neutrons
microbeams
neutron beams
decay
escape
spatial resolution
wave functions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Experimental determination of the neutron channeling length in a planar waveguide. / Kozhevnikov, S. V.; Ignatovich, V. K.; Ott, F.; Rühm, A.; Major, J.

In: Journal of Experimental and Theoretical Physics, Vol. 117, No. 4, 10.2013, p. 636-640.

Research output: Contribution to journalArticle

Kozhevnikov, S. V. ; Ignatovich, V. K. ; Ott, F. ; Rühm, A. ; Major, J. / Experimental determination of the neutron channeling length in a planar waveguide. In: Journal of Experimental and Theoretical Physics. 2013 ; Vol. 117, No. 4. pp. 636-640.
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