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Download BNMRfit istallation script Download BNMRfit Download BNMRminfit	Criteria for Good Tunes On $\beta$ NMR, once the F count on the platform has been maximized and the tune tested, put the hole exposing the sample in place and push the sample into the middle of the magnet. Watch the ratio of the platform F/B count. The F count should still be maximal, and the ratio (at a field of 4.1 T) should be 2. For other values of the field, the value of the ratio may be slightly different; however the F count should always be the largest. At low fields (0.5 T or less) the F count rate should again be maximal and the B rate may fall to a very low value. The ratio of F/B may be as high as 10. On $\beta$ NQR Both the L and R count rates should be maximized. The ratio will be approximately 1. To truly test this, put the shutter in the front of the laser and check the rate in the absence of nuclear polarization [2].
	Page last modified: 07/23/09 02:45 by Andrew MacFarlane.