Precision measurement of the n-3He incoherent scattering length using neutron interferometry.
We report the first measurement of the low-energy neutron-(3)He incoherent scattering length using neutron interferometry: b_{i};{'} = (-2.512 +/- 0.012 stat +/- 0.014 syst) fm. This is in good agreement with a recent calculation using the AV18 + 3N potential. The neutron-(3)He scattering lengths are important for testing and developing nuclear potential models that include three-nucleon forces, effective field theories for few-body nuclear systems, and neutron scattering measurements of quantum excitations in liquid helium. This work demonstrates the first use of a polarized nuclear target in a neutron interferometer.
Huber
M G
MG
Tulane University, New Orleans, Louisiana 70118, USA.
Arif
M
M
Black
T C
TC
Chen
W C
WC
Gentile
T R
TR
Hussey
D S
DS
Pushin
D A
DA
Wietfeldt
F E
FE
Yang
L
L