Open AccessUHF EPR spectrometer operating at frequencies between 400 MHz and 1 GHz
Author(s) -
Quine Richard W.,
Rinard George A.,
Shi Yilin,
Buchanan Laura,
Biller Joshua R.,
Eaton Sandra S.,
Eaton Gareth R.
Publication year - 2016
Publication title -
concepts in magnetic resonance part b: magnetic resonance engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.286
H-Index - 32
eISSN - 1552-504X
pISSN - 1552-5031
DOI - 10.1002/cmr.b.21328
Subject(s) - resonator , spectrometer , ultra high frequency , electromagnetic coil , materials science , noise (video) , quality (philosophy) , physics , acoustics , range (aeronautics) , nuclear magnetic resonance , optics , electrical engineering , engineering , computer science , quantum mechanics , artificial intelligence , image (mathematics) , composite material
A spectrometer was designed and constructed to facilitate measurements of T 1 , T 2 , spin echo signal‐to‐noise, and resonator quality factor, Q , between about 400 and 1000 MHz. Pulse patterns are generated at 250 MHz and mixed with the output from a second source to perform excitation and detection. A cross‐loop resonator was constructed in which the same sample could be measured in the same resonator over the full range of frequencies. An air‐core, four‐coil, water‐cooled electromagnet with a large experimental volume was built.