Journal ArticleDOI
Wideband Feedback Coherence Control for Superregenerative NQR Spectrometers
G. E. Peterson,P. M. Bridenbaugh +1 more
TLDR
In this paper, a wideband feedback coherence control system for super-regenerative NQR spectrometers is described, which makes use of a servo motor to adjust the oscillator grid bias.Abstract:
A description is given of a wideband feedback coherence control system for superregenerative NQR spectrometers. By making use of a servo motor to adjust the oscillator grid bias, increases in rf searching band are possible. As an example, a bandwidth of 30 Mc around a center frequency of 70 Mc has been obtained. The sensitivity of the circuit to nuclear quadrupole resonance signals is high. The spectrometer will operate unattended.read more
Citations
More filters
Journal ArticleDOI
Chlorine and Antimony Nuclear Quadrupole Resonance in SbCl5CH3CN, SbCl5POCl3, and SbCl5
TL;DR: In this paper, a covalent structure for the SbCl5CH3CN complex was proposed on the basis of its resonances, and a qualitative discussion of the temperature dependences and their implications on the molecular dynamics of these molecules is also included.
Journal ArticleDOI
An improved super-regenerative spectrometer for nuclear quadrupole resonance spectroscopy
J A S Smith,D A Tong +1 more
TL;DR: In this article, a super-regenerative spectrometer with automatic gain control and direct frequency calibration of the recorder chart is presented, where the damping period is independent of the quench frequency and relatively little gain change occurs when the latter is varied in order to suppress the sidebands.
Journal ArticleDOI
Nuclear quadrupole coupling in organotin chlorides. II. Dichlorides
Paul J. Green,Jack D. Graybeal +1 more
Journal ArticleDOI
Triarylphosphite substitution in pentakis(aromatic isocyanide)cobalt(I)
C.A.L. Becker,Bradley L. Davis +1 more
TL;DR: In this article, Triphenylphosphite and tirs(p-chlorophenyl)phosphites replace aromatic isocyanide in [CoNR)5]X (XClO4, BF4) to yield [Co(CNR)4P(OR′)3]X.
Journal ArticleDOI
Observation de la résonance quadripolaire pure de l'azote et du chlore dans quelques complexes à transfert de charge
J.P. Lucas,L. Guibé +1 more
TL;DR: In this paper, the authors studied nitrogen and chlorine pure quadrupole resonance spectra in some charge transfer complexes with a chloroform molecule as acceptor, the donors being some amino and heterocyclic compounds.
References
More filters
Journal ArticleDOI
Zeeman effect on the quadrupole spectrum of iodic acid
Ralph Livingston,Henry Zeldes +1 more
TL;DR: The pure quadrupole spectrum of I127 in iodic acid has been observed at several temperatures as mentioned in this paper, and at 22°C the z component is 1126.9 Mc and η, the asymmetry parameter is 0.4505.
Journal ArticleDOI
Cl35 Nuclear Quadrupole Resonances in TiCl4 and WCl6
R. P. Hamlen,W. S. Koski +1 more
Journal ArticleDOI
Feedback Coherence Control for Super-Regenerative Spectrometers
TL;DR: In this paper, a 30 to 45-Mc self-quenched super-regenerative spectrometer incorporating feedback control of the quench rate is described. But this method requires manual readjustment.
Related Papers (5)
Radio‐Frequency Spectrometer with Bidirectional Square Wave Frequency Modulation
J. F. Verdieck,C. D. Cornwell +1 more
Estimates of Hammett's Sigma Values from Quadrupole Resonance Studies
P. J. Bray,R. G. Barnes +1 more