Designing experiments for demonstration of isotope-selective distribution transfer using terahertz wave

Yokoyama, Keiichi  

Design of experiments to demonstrate the isotope-selective displacement of rotational state distribution is reported for future demonstration using realistic terahertz pulse train. Elements to be designed include species used as a target and methods to prepare the target, to prepare THz pulse train, and to measure the distribution. As a result, lithium chloride has been chosen as the target molecule, which is prepared as He-seeded supersonic molecular beam produced with a high-temperature CW nozzle. The terahertz pulse train is prepared by a three-stage interferometer or etalon. The rotational state distribution is measured by momentum imaging spectroscopy. Numerical simulation of the selective displacement is carried out under the chosen condition.