The first-order electric field-induced spectrum of NO2 arises from off
-diagonal elements of the Stark Hamiltonian and the first-order nuclea
r-quadrupole Hamiltonian. The first-order electric field-induced spect
rum of NO2 was analyzed by semi-classical theory and observed by Stark
modulation electric rotation laser spectroscopy. (C) 1998 Elsevier Sc
ience B.V. All rights reserved.