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Proceedings Paper

Neutron spin filters (NSF) obtained by metastability-exchange optical pumping (MEOP) and mechanical compressing of 3He gas
Author(s): V. Hutanu; Klaus Habicht; A. Rupp
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Paper Abstract

NSF using gaseous polarized 3He became a popular tool for many polarized neutron scattering applications due to the number of advantages that this technique presents, but also due to significant increasing of technical performancies demonstrated in that field in the last years. The realization of flexible and reliable devices for neutron beam polarization is a focal point in the instrumental development program at the Hahn-Meitner Institute Berlin (HMI). The technique applied in our case to obtain nuclear-spin-polarized 3He is metastability-exchange optical pumping (MEOP) using a cw Nd:LNA laser with 5.8 W output power and 2.5 GHz bandwidth. The general aspects regarding optical pumping in optical polarizing cells are described. The construction of the optical pumping volume is presented, the last results regarding optical pumping cells (OPC) and filter cells preparation are discussed. The status and perspectives of the project are presented.

Paper Details

Date Published: 21 October 2004
PDF: 10 pages
Proc. SPIE 5581, ROMOPTO 2003: Seventh Conference on Optics, (21 October 2004); doi: 10.1117/12.582925
Show Author Affiliations
V. Hutanu, Hahn-Meitner Institut (Germany)
Klaus Habicht, Hahn-Meitner Institut (Germany)
A. Rupp, Hahn-Meitner Institut (Germany)


Published in SPIE Proceedings Vol. 5581:
ROMOPTO 2003: Seventh Conference on Optics
Valentin I. Vlad, Editor(s)

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