IR-megagauss spectroscopy on HgSe provides information on both intra- and i
nter-band transitions resulting in a new set of k*p-parameters for high mag
netic field application. Transient effects in the resonance intensities are
due to hysteresis effects in the spin dependent population and provide a n
ovel tool for the determination of the spin-lattice relaxation. (C) 2001 El
sevier Science B.V. All rights reserved.