A direct measurement of the neutron-neutron scattering length

A direct measurement of the neutron-neutron scattering length

A direct measurement of nn-scattering by colliding free neutrons has never been performed. Indirect measurements continue to provide inconsistent results, leaving the issue of charge symmetry in the nuclear force unresolved. At present the Russian pulsed reactor YAGUAR is the best neutron source for such a measurement. A neutron moderator is installed in the central through channel and the scattered neutrons are detected at a distance of 12 m from the reactor. An instantaneous value of 1.1 × 10(18)/cm²s was obtained for the thermal neutron flux density. The experiment will be performed by the DIANNA Collaboration as ISTC project No. 2286.

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Main Authors: Mitchell,G. E., Furman,W. I., Lychagin,E. V., Muzichka,A. Yu., Nekhaev,G. V., Strelkov,A. V., Sharapov,E. I., Shvetsov,V. N., Levakov,B. G., Litvin,V. I., Lyzhin,A. E., Magda,E. P., Crawford,B. E., Stephenson,S. L., Howell,C. R., Tornow,W
Format: Digital revista
Language:English
Published: Sociedade Brasileira de Física 2005
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332005000500036
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spelling oai:scielo:S0103-973320050005000362005-11-07A direct measurement of the neutron-neutron scattering lengthMitchell,G. E.Furman,W. I.Lychagin,E. V.Muzichka,A. Yu.Nekhaev,G. V.Strelkov,A. V.Sharapov,E. I.Shvetsov,V. N.Levakov,B. G.Litvin,V. I.Lyzhin,A. E.Magda,E. P.Crawford,B. E.Stephenson,S. L.Howell,C. R.Tornow,WA direct measurement of nn-scattering by colliding free neutrons has never been performed. Indirect measurements continue to provide inconsistent results, leaving the issue of charge symmetry in the nuclear force unresolved. At present the Russian pulsed reactor YAGUAR is the best neutron source for such a measurement. A neutron moderator is installed in the central through channel and the scattered neutrons are detected at a distance of 12 m from the reactor. An instantaneous value of 1.1 × 10(18)/cm²s was obtained for the thermal neutron flux density. The experiment will be performed by the DIANNA Collaboration as ISTC project No. 2286.info:eu-repo/semantics/openAccessSociedade Brasileira de FísicaBrazilian Journal of Physics v.35 n.3b 20052005-09-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332005000500036en10.1590/S0103-97332005000500036
institution SCIELO
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country Brasil
countrycode BR
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tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Mitchell,G. E.
Furman,W. I.
Lychagin,E. V.
Muzichka,A. Yu.
Nekhaev,G. V.
Strelkov,A. V.
Sharapov,E. I.
Shvetsov,V. N.
Levakov,B. G.
Litvin,V. I.
Lyzhin,A. E.
Magda,E. P.
Crawford,B. E.
Stephenson,S. L.
Howell,C. R.
Tornow,W
spellingShingle Mitchell,G. E.
Furman,W. I.
Lychagin,E. V.
Muzichka,A. Yu.
Nekhaev,G. V.
Strelkov,A. V.
Sharapov,E. I.
Shvetsov,V. N.
Levakov,B. G.
Litvin,V. I.
Lyzhin,A. E.
Magda,E. P.
Crawford,B. E.
Stephenson,S. L.
Howell,C. R.
Tornow,W
A direct measurement of the neutron-neutron scattering length
author_facet Mitchell,G. E.
Furman,W. I.
Lychagin,E. V.
Muzichka,A. Yu.
Nekhaev,G. V.
Strelkov,A. V.
Sharapov,E. I.
Shvetsov,V. N.
Levakov,B. G.
Litvin,V. I.
Lyzhin,A. E.
Magda,E. P.
Crawford,B. E.
Stephenson,S. L.
Howell,C. R.
Tornow,W
author_sort Mitchell,G. E.
title A direct measurement of the neutron-neutron scattering length
title_short A direct measurement of the neutron-neutron scattering length
title_full A direct measurement of the neutron-neutron scattering length
title_fullStr A direct measurement of the neutron-neutron scattering length
title_full_unstemmed A direct measurement of the neutron-neutron scattering length
title_sort direct measurement of the neutron-neutron scattering length
description A direct measurement of nn-scattering by colliding free neutrons has never been performed. Indirect measurements continue to provide inconsistent results, leaving the issue of charge symmetry in the nuclear force unresolved. At present the Russian pulsed reactor YAGUAR is the best neutron source for such a measurement. A neutron moderator is installed in the central through channel and the scattered neutrons are detected at a distance of 12 m from the reactor. An instantaneous value of 1.1 × 10(18)/cm²s was obtained for the thermal neutron flux density. The experiment will be performed by the DIANNA Collaboration as ISTC project No. 2286.
publisher Sociedade Brasileira de Física
publishDate 2005
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-97332005000500036
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