DEVICE FOR OBSERVATION OF H(1)-P(31) AND F(19)-P(31) DOUBLE NUCLEAR MAGNETIC RESONANCE BY SPECTROMETERS WITH A FREQUENCY OF 40 MHz,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
Pagination or Media Count:
A device is proposed for disrupting the spin-spin bond of the H1 or F19 nuclei with the P31 nucleus when recording the spectra of nuclear magnetic resonance by means of spectrometers with an operating frequency of 40 MHz. The device provides for a maximum induction of a 4 Gauss high frequency magnetic field in the sample. The frequency is controlled from 15.3 to 17.6 MHz in 3 steps achieved by varying the capacity and inductance of the tank circuit as well as the capacity of the diode. The latter variation is achieved by a biasing dc voltage. Figures are presented showing the spectrum of proton resonance obtained by means of the device. The device makes it possible to achieve double resonance with high stability and with a uniform frequency control.
- Physical Chemistry