W I Furman et al 2002 J. Phys. G: Nucl. Part. Phys. 28 2627 doi:10.1088/0954-3899/28/10/308
W I Furman1, E V Lychagin1, A Yu Muzichka1, G V Nekhaev1, Yu V Safronov1, A V Strelkov1, E I Sharapov1, V N Shvetsov1, B G Levakov2, V I Litvin2, A E Lyzhin2, E P Magda2, C R Howell3,5, G E Mitchell4,5, W Tornow3,5, B E Crawford6, S L Stephenson6 and C D Bowman7
Show affiliationsWe 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.
13.75.Cs Nucleon-nucleon interactions (including antinucleons, deuterons, etc.)
21.30.Fe Forces in hadronic systems and effective interactions
Issue 10 (October 2002)
Received 16 July 2002
Published 17 September 2002
W I Furman et al 2002 J. Phys. G: Nucl. Part. Phys. 28 2627
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