Abstract
The T 2 ★ of hexainethylenetetramine, C 6H 12 N 4, and sodium nitrite, NaNO 2, at 297°K and 77°K, and of 4-methoxy analine, C 5H 9 NO, at 297°K are reported. Two different nitrogen super-regenerative N.Q.R. spectrometers were used. Two different techniques for obtaining T 2 ★ were used: one measured the shift in signal detection threshold quench frequency with changing sample mass; the other measured the change in signal intensity for a small change of quench frequency near threshold. The importance of quench frequency studies and spectrometer construction for signal detection are discussed.
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