Direct measurement of the neutron-neutron scattering cross section at the reactor YAGUAR

Journal Article (Journal Article)

We propose to perform the first measurement of the neutron-neutron scattering cross section in the through-channel of the pulsed aperiodic reactor YAGUAR (Snezhinsk, Russia). Such a measurement directly determines the neutron-neutron scattering length, and by comparison with the proton-proton scattering length bears upon the issue of charge symmetry of the nuclear force. The proposed experimental set-up, as well as modelling of the neutron density and of the frequency of neutron-neutron collisions is described. Experimental results are reported on the formation and optimization of the thermal neutron field inside the through-channel of the reactor YAGUAR. The instantaneous value of 1.1 × 1018 cm-2 s-1 obtained for the thermal neutron flux density is large enough to perform the first direct neutron-neutron scattering length measurement.

Full Text

Duke Authors

Cited Authors

  • Furman, WI; Lychagin, EV; Muzichka, AY; Nekhaev, GV; Safronov, YV; Strelkov, AV; Sharapov, EI; Shvetsov, VN; Levakov, BG; Litvin, VI; Lyzhin, AE; Magda, EP; Howell, CR; Mitchell, GE; Tornow, W; Crawford, BE; Stephenson, SL; Bowman, CD

Published Date

  • October 1, 2002

Published In

Volume / Issue

  • 28 / 10

Start / End Page

  • 2627 - 2641

International Standard Serial Number (ISSN)

  • 0954-3899

Digital Object Identifier (DOI)

  • 10.1088/0954-3899/28/10/308

Citation Source

  • Scopus