High-resolution imaging of molecular collisions using a Zeeman decelerator

We present the first crossed beam scattering experiment using a Zeeman decelerated molecular beam. The narrow velocity spreads of Zeeman decelerated NO ($X ^2Π_{3/2}, j=3/2$) radicals result in high-resolution scattering images, thereby fully resolving quantum diffraction oscillations in the angular scattering distribution for inelastic NO-Ne collisions, and product-pair correlations in the radial scattering distribution for inelastic NO-O$_2$ collisions. These measurements demonstrate similar resolution and sensitivity as in experiments using Stark decelerators, opening up possibilities for controlled and low-energy scattering experiments using chemically relevant species such as H and O atoms, O$_2$ molecules or NH radicals.

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