Title | Polarisation of a spin–NMR probe 11Be using collinear laser optical pumping |
Publication Type | Journal Article |
Year of Publication | 2009 |
Authors | Levy, CDP, Pearson, MR, Morris, GD, Lassen, J, Chow, KH, Hossain, MD, Kiefl, RF, Labbé, R, MacFarlane, WA, Parolin, TJ, Root, L, Saadaoui, H, Smadella, M, Wang, D |
Journal | Physica B: Condensed Matter |
Volume | 404 |
Pagination | 1010 - 1012 |
ISSN | 0921-4526 |
Keywords | Magnetic probe |
Abstract | Spin 1 2 probes have special importance in the field of NMR, since they have no electric quadrupole moment and are thus pure magnetic sensors. The absence of quadrupolar splittings greatly simplifies the \{NMR\} frequency spectrum. That the muon is spin 1 2 is one of the reasons it has become so useful as a magnetic probe. Until now there has been no spin 1 2 probe suitable for beta-detected NMR. Such a probe would be particularly useful in complex materials, which are in general non-cubic. In this paper we describe the development of a low energy beam of spin-polarised 11Be, which is the lightest spin 1 2 isotope suitable for β -NMR. The intensity of the 11 Be + beam—generated by a laser ionisation source—is about 10 6 / s . The 11Be nuclei are polarised by collinear laser optical pumping with an externally frequency doubled dye laser tuned to the 2 S 1 / 2 –2 P 1 / 2 transition of 11 Be + at 313 nm. |
URL | http://www.sciencedirect.com/science/article/pii/S0921452608007333 |
DOI | 10.1016/j.physb.2008.11.205 |
![](https://chem.ubc.ca/sites/default/files/styles/header_large_c/public/header_images/ugradlab-header.jpg?itok=-FidXx5L×tamp=1585256910)