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Electrostatic deflection of the water molecule, a fundamental asymmetric rotor

Ramiro Moro·Jaap Bulthuis·Jonathon Heinrich·Vitaly V. Kresin
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Abstract

An inhomogeneous electric field is used to study the deflection of a supersonic beam of water molecules. The deflection profiles show strong broadening accompanied by a small net displacement towards higher electric fields. The profiles are in excellent agreement with a calculation of rotational Stark shifts. The molecular rotational temperature being the only adjustable parameter, beam deflection is found to offer an accurate and practical means of determining this quantity. A pair of especially strongly responding rotational sublevels, adding up to \approx 25% of the total beam intensity, are readily separated by deflection, making them potentially useful for further electrostatic manipulation.

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Ramiro Moro, Jaap Bulthuis, Jonathon Heinrich, Vitaly V. Kresin. 2006-12-04. Electrostatic deflection of the water molecule, a fundamental asymmetric rotor. https://doi.org/10.1103/physreva.75.013415

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