A solid state pulsed NMR spectrometer

Shenoy, RK and Ramakrishna, J and Jeffrey, KR (1980) A solid state pulsed NMR spectrometer. In: Pramana, 14 (5). 0304-4289.

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Abstract

A 10 MHz pulsed NMR spectrometer, built using mostly solid state devices, is described. The pulse programmer provides 2-pulse, 3-pulse, saturation burst and Carr-Purcell sequences both in repetitive and manual modes of operation. The transmitter has a maximum power output of ∼ 2 kW with a 75 Ω output impedance termination. The total gain of the receiver system is around 120 dB with a minimum band width of 2 MHz. The recovery time of the receiver is ∼ 7 µsec. A two-channel boxcar integrator capable of working in the single channel, differential and double boxcar modes provides signal to noise ratio improvement. The sensitivity and the linearity of the boxcar integrator are ∼ 2 mV and ∼ 0.1% respectively.

Item Type:	Journal Article
Publication:	Pramana
Publisher:	Springer India, in co-publication with Indian Academy of Sciences
Additional Information:	Copyright of this article belongs to Indian Academy of sciences.
Keywords:	Pulsed NMR spectrometer - pulse programmer - gated transmitter - video amplifier - quench circuit - box car integrator
Department/Centre:	Division of Physical & Mathematical Sciences > Physics
Date Deposited:	28 Jan 2010 08:01
Last Modified:	19 Sep 2010 05:39
URI:	http://eprints.iisc.ac.in/id/eprint/21806

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