Journal Article

PreJuSER-545

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Design of a permanent magnet with a mechanical sweep suitable for variable-temperature continuous-wave and pulsed EPR spectroscopy

Bauer, C. ; Raich, H. ; Jeschke, G. ; Blümler, P.FZJ*

2009
Elsevier Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jmr.2009.02.010

Abstract: A magnetic system is introduced which consists of three nested rings of permanent magnets of a Halbach dipolar layout and is capable for EPR spectroscopy. Two of the rings can be rotated independently to adjust the magnetic flux in the center and even allow for mechanical field sweeps. The presented prototype achieves a magnetic flux range of 0.0282-0.3013T with a minimal sweep of 0.15mT and homogeneity of about 10(-3). First applications with CW and pulsed Mims ENDOR as well as ESEEM experiments on a sample of a glycine single crystal doped with 1% copper nitrate demonstrate that flux range, sweep accuracy and homogeneity of this prototype is sufficient for EPR experiments on most solid samples. Together with a recently improved design magnets can be build which could serve as compact and easily transportable replacement of standard electromagnets with negligible consumption of power or coolants.

Keyword(s): Electromagnetic Fields (MeSH) ; Electron Spin Resonance Spectroscopy: instrumentation (MeSH) ; Equipment Design (MeSH) ; Glycine: chemistry (MeSH) ; Magnetics (MeSH) ; Microwaves (MeSH) ; Temperature (MeSH) ; Glycine ; J ; ESR (auto) ; Electron spin resonance (auto) ; Electron paramagnetic resonance (auto) ; Copper (auto) ; ESEEM (auto) ; ENDOR (auto) ; Nested Halbach dipoles (auto)

Note: Record converted from VDB: 12.11.2012

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Research Program(s):

1. Terrestrische Umwelt (P24)

Appears in the scientific report 2009

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