Pendellösung interferometry probes the neutron charge radius, lattice dynamics, and fifth forces.
Science
; 373(6560): 1239-1243, 2021 Sep 10.
Article
em En
| MEDLINE
| ID: mdl-34516785
ABSTRACT
Structure factors describe how incident radiation is scattered from materials such as silicon and germanium and characterize the physical interaction between the material and scattered particles. We used neutron Pendellösung interferometry to make precision measurements of the (220) and (400) neutron-silicon structure factors and achieved a factor-of-four improvement in the (111) structure factor uncertainty. These data provide measurements of the silicon Debye-Waller factor at room temperature and the mean square neutron charge radius rn2=−0.1101±0.0089 square femtometers. Combined with existing measurements of the Debye-Waller factor and charge radius, the measured structure factors also improve constraints on the strength of a Yukawa modification to gravity by an order of magnitude over the 20 picometerto10 nanometer length scale range.
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Base de dados:
MEDLINE
Idioma:
En
Revista:
Science
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Estados Unidos