منابع مشابه
Rapid-scan EPR imaging.
In rapid-scan EPR the magnetic field or frequency is repeatedly scanned through the spectrum at rates that are much faster than in conventional continuous wave EPR. The signal is directly-detected with a mixer at the source frequency. Rapid-scan EPR is particularly advantageous when the scan rate through resonance is fast relative to electron spin relaxation rates. In such scans, there may be o...
متن کاملRapid-scan EPR of immobilized nitroxides.
X-band electron paramagnetic resonance spectra of immobilized nitroxides were obtained by rapid scan at 293 K. Scan widths were 155 G with 13.4 kHz scan frequency for (14)N-perdeuterated tempone and for T4 lysozyme doubly spin labeled with an iodoacetamide spirocyclohexyl nitroxide and 100 G with 20.9 kHz scan frequency for (15)N-perdeuterated tempone. These wide scans were made possible by mod...
متن کاملA new strategy for fast radiofrequency CW EPR imaging: direct detection with rapid scan and rotating gradients.
Rapid field scan on the order of T/s using high frequency sinusoidal or triangular sweep fields superimposed on the main Zeeman field, was used for direct detection of signals without low-frequency field modulation. Simultaneous application of space-encoding rotating field gradients have been employed to perform fast CW EPR imaging using direct detection that could, in principle, approach the s...
متن کاملUsing rapid-scan EPR to improve the detection limit of quantitative EPR by more than one order of magnitude.
X-band rapid-scan EPR was implemented on a commercially available Bruker ELEXSYS E580 spectrometer. Room temperature rapid-scan and continuous-wave EPR spectra were recorded for amorphous silicon powder samples. By comparing the resulting signal intensities the feasibility of performing quantitative rapid-scan EPR is demonstrated. For different hydrogenated amorphous silicon samples, rapid-scan...
متن کاملEPR Imaging: Progress and Prospects
In this brief article we provide an assessment of the state-of-the-art in EPR imaging, and suggest some of the future directions. Several reviews, including two by Ohno (1,2) and two by us (3,4) comprehensively discuss the literature. Here we provide an overview of published work (1-51), and unpublished results presented at the 10th International EPR Symposium in August 1987 (52-64). Only a ver...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Magnetic Resonance
سال: 2017
ISSN: 1090-7807
DOI: 10.1016/j.jmr.2017.02.013