Measurements of the Analyzing Power of Neutron-Helium-3 Elastic Scattering Between 1.60 and 5.54 MeV

Loading...
Thumbnail Image

Date

2012

Authors

Esterline, James

Advisors

Tornow, Werner

Journal Title

Journal ISSN

Volume Title

Repository Usage Stats

363
views
351
downloads

Abstract

An experiment measuring the analyzing power Ay(θ) for neutron–helium-3 (n-3He) elastic scattering over broad angular distributions for a range of incident neutron energies from 1.60 to 5.54 MeV has been conducted at the Triangle Universities Nuclear Laboratory. These measurements represent an effort to resolve the long-standing discrepancy between experiment and theory in low-energy three-nucleon analyzing powers, through the evaluation of analyzing powers in the four-nucleon systems, which are expected to exhibit sensitivities not accessible with fewer nucleons. The present work is described in terms of the experimental setup and data reduction techniques; a comparison of the results with rigorous calculations using both nucleon-nucleon and, as recently has become available, three-nucleon potential models is presented. While a discrepancy between calculation and measurement was observed, at low energies substantially better agreement was achieved than in related measurements of the proton–helium-3 (p-3He) analyzing power, suggesting a sizeable dependence on isospin in the four-nucleon systems.

Department

Description

Provenance

Citation

Citation

Esterline, James (2012). Measurements of the Analyzing Power of Neutron-Helium-3 Elastic Scattering Between 1.60 and 5.54 MeV. Dissertation, Duke University. Retrieved from https://hdl.handle.net/10161/5608.

Collections


Dukes student scholarship is made available to the public using a Creative Commons Attribution / Non-commercial / No derivative (CC-BY-NC-ND) license.