molecular beam

noun

, Physics.

1. a stream of molecules freed from a substance, usually a salt, by evaporation and then passed through a narrow slit for focusing, for investigating the properties of nuclei, atoms, and molecules.

molecular beam

noun

1. physics a parallel beam of molecules that are at low pressure and suffer no interatomic or intermolecular collisions

Example Sentences

A key feature of a molecular beam is that the molecules move at nearly the same, albeit extremely high, velocity.

From Nature

They achieve this feat by directly slowing a fast-moving molecular beam and subsequently loading the molecules into a trap generated by electric currents flowing in superconducting magnets.

From Nature

Such a low operational temperature was key to ensuring that the materials remained in the superconducting phase during the rapid switching of large currents that was needed to stop the slowed molecular beam at the centre of the trap.

From Nature

We apply molecular beam epitaxy to grow an AlGaN/GaN quantum-well heterostructure directly on top of an ultrathin crystalline NbN superconductor.

From Nature

Kaun, S. W., Wong, M. H., Mishra, U. K. & Speck, J. S. Correlation between threading dislocation density and sheet resistance of AlGaN/AlN/GaN heterostructures grown by plasma-assisted molecular beam epitaxy.

From Nature