Measurement of the K_a=1(vco=1) stretching mode in Ar-CO using a herriott multipass cell

摘要

A Heriott multipass cell has provided a significant increase in the sensitivity of our computer controlled diode laser spectrometer for the investigation of van der Waals clusters in a con- tinuous slit jet expansion. The assignment was then possible of 57 new lines to the perpendi- cular transition form the (V_CO, J, K_a,n) =(0, 2, 2, 0) ground state of the Ar-CO van der Waals complex to the combination band of the CO fundamental vibration (V_CO=1) and the K_a=1 (j=1) stretching mode (1,1,1,2).