Hexapole state selection and focusing vs. brute force orientation of beam molecules

摘要: The commonly used method of orienting polar molecules in a beam, by state selection and focusing with an electrostatic hexapole lens, is compared the recently introduced orientation means strong, homogeneous, electric field, based on second- higher-order Stark effects. latter, so-called brute force technique, has proved much more effective than had been assumed until recently, increasingly so if beam are rotationally very cold.The properties both techniques illustrated number examples. wider applicability technically simpler implementation technique offset absence selection. For description molecular orientational distribution this that, general, parameters needed for molecule selected single quantum state.