Precision measurement of the n-He3 incoherent scattering length using neutron interferometry

M. G. Huber, M. Arif, T. C. Black, W. C. Chen, T. R. Gentile, D. S. Hussey, D. A. Pushin, F. E. Wietfeldt, L. Yang

Research output: Contribution to journalArticlepeer-review


We report the first measurement of the low-energy neutron-He3 incoherent scattering length using neutron interferometry: bi′=(-2.512±0. 012stat±0.014syst)fm. This is in good agreement with a recent calculation using the AV18+3N potential. The neutron-He3 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.

Original languageEnglish (US)
Article number200401
JournalPhysical review letters
Issue number20
StatePublished - May 18 2009

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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