Journal ArticleDOI
A Single‐Coil Probe Damper for Pulsed Nuclear Magnetic Resonance
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TLDR
In this article, a probe damper suitable for single coil NMR probes is presented, which improves the time for ringdown following an rf pulse by a factor of 2.5.Abstract:
A circuit design is presented for a probe damper suitable for single coil NMR probes which improves the time for ringdown following an rf pulse by a factor of 2.5. The damping is provided for a precisely controlled time and removed positively to enable the use of high‐Q single‐coil NMR probes for samples with very short T2's. The damper can be adapted for use with negative or positive transmitter gating pulses.read more
Citations
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Journal ArticleDOI
A fast recovery pulsed nuclear magnetic resonance sample probe using a delay line
I. J. Lowe,M. Engelsberg +1 more
TL;DR: In this paper, a sample probe for pulsed nuclear magnetic resonance that replaces the normal resonant circuit by a lumped parameter delay line is described, which has a much wider bandwidth, much shorter transient decay time, and faster recovery from the rf excitation pulse.
Patent
Q-factor switching method and apparatus for detecting nuclear quadrupole and nuclear magnetic resonance signals
Taras Nikolaevitch Rudakov,Vassili Mikhaltsevitch,Warrick Paul Chisholm,John Harold Flexman,Peter Alaric Hayes +4 more
TL;DR: In this paper, a variable impedance unit (20) for changing the Q-factor of the probe and a probe coil was proposed. But the probe was not designed for the detection of NQR or NMR signals.
Journal ArticleDOI
Coupling scheme and probe damper for pulsed nuclear magnetic resonance single coil probe
TL;DR: A coupling scheme and a probe damper for use with a pulsed nuclear magnetic resonance single coil probe are described in this article, and the designs for both circuits incorporate the unique properties of PIN diodes.
Journal ArticleDOI
NMR probe with short recovery time
E.R Andrew,K Jurga +1 more
TL;DR: In this article, an active damping circuit was proposed for low frequency NMR probes with an active diode expander to dampen the ringing of the probe after RF excitation.
References
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Journal ArticleDOI
Apparatus for the Detection of Ultraslow Atomic Motion by Magnetic Resonance Techniques
TL;DR: In this paper, a new method of aligning the nuclear magnetization along the rf field H1, which employs a field pulse, is discussed together with an easily constructed transistor field pulse amplifier.
Journal ArticleDOI
A simple single-coil probe for pulsed nuclear magnetic resonance.
R A McKay,D E Woessner +1 more
TL;DR: The circuit of the single-coil system for pulsed nuclear magnetic resonance is analysed in detail and a simple and effective probe with an active damper of pulse transients and with a preamplifier is described.
Journal ArticleDOI
Means of Reducing Ringing Times in Pulsed Nuclear Magnetic Resonance
TL;DR: In this paper, two auxiliary circuits are described for incorporation in a pulsed nuclear magnetic resonance system to reduce the deadtime of the system following an rf exciting pulse, and they represent certain improvements in established techniques of clamping and damping.