Calibrations radiofrequency fields

The temperature of solid specimens in the plasma was determined by means of an infrared radiation thermometer (Infrascope Model 3-1C00, Huggins Laboratories Inc., Sunnyvale, Calif.) attached to a chart recorder. This device employs a lead sulfide detector and suitable filters to permit remote measurement of 1.2 to 2.5/x radiation emitted by the specimen. Line filters and electrostatic shielding were employed to minimize interaction of the radiofrequency field with the infrared thermometer. To compensate for variations in emissivity and inhomogeneity in the optical field, empirical calibration curves were constructed based on measurements of new and partially oxidized graphite pellets in a con-... [Pg.240]

The radiofrequency field strengths must be carefully calibrated, preferably using the 2D experiment described by Nielsen et al. [15]. Strong radiofrequency fields are most convenient because they increase the efficiency of the multiple-pulse homonuclear decoupling, while high stability of the power and phases of the radiofrequency pulses is crucial. [Pg.365]

Bax A (1983b) A simple method for the calibration of the decoupler radiofrequency field strength. J Magn Reson 52 76-80... [Pg.84]

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