An X-band time domain electron paramagnetic resonance spectrometer

Das, Ranjan ; Venkataraman, Balu ; Bhagat, Vinod R. ; Ghangrekar, Ajit S. ; Kuruvilla, Thomas ; Chaturvedi, B. K. ; Isola, G. S. ; Marwaha, B. M. ; Nair, P. G. ; Parolia, R. S. ; et., al (1986) An X-band time domain electron paramagnetic resonance spectrometer Pramana - Journal of Physics, 27 (5). pp. 661-677. ISSN 0304-4289

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A computer-controlled X-band time domain electron paramagnetic resonance (EPR) spectrometer, with a time resolution of the order of 0.5μsec, has been constructed with many of the crucial microwave components designed and fabricated by the Microwave Engineering Group of TIFR. The spectrometer operates either in a microwave power pulsed mode for determination of spin-lattice relaxation times by the saturation recovery technique or in the kinetic mode for determination of the time dependence of EPR signal after laser excitation. It has an automatic frequency control, an automatic phase control and, most importantly, a field-frequency lock which ensures good stability of the EPR line positions enabling signal averaging for extended periods. The constructional details of the spectrometer and its performance in both the modes are described here by reporting results on certain typical systems.

Item Type:Article
Source:Copyright of this article belongs to Indian Academy of Sciences.
Keywords:Magnetic Resonance; Electron Paramagnetic Resonance; Electron Spin Resonance; Saturation Recovery Technique; Electron Spin-lattice Relaxation; Time Domain EPR; Pulsed
ID Code:56521
Deposited On:24 Aug 2011 11:19
Last Modified:18 May 2016 08:18

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