On the validity of level crossing calculations for 10B NQDR

The I=3 nuclear quadrupole resonance spectra (e.g. ¹⁰B) present peculiarities in comparison to I=1 or I=$\text{3}\text{2}$ spectra. Hence, the predictions of the simple level crossing theory with regard to the relative line intensities of I=3 DRLC spectra were checked by comparison with the experimental spectrum of borazine (B₃N₃H₆). If the experiment is properly conducted level crossing theory will be able to calculate the relative line intensities correctly in spite of the huge differences in the quantum-mechanical transition probabilities and other complications of the I=3 system. The relative line intensities should be fairly independent of the value of the asymmetry parameter.