magnetic lens


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Related to magnetic lens: electromagnetic lens

magnetic lens

n
(General Physics) a set of magnets, esp electromagnets, used to focus or defocus a beam of charged particles in an electron microscope, particle accelerator, or similar device
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'In a similar way to a magnifying glass focusing the sun's rays to a small spot, we propose to focus a particle beam to a small spot using a magnetic lens to ablate the tumour.'
For on-chip particle separation, a motorized magnet system called a magnetic lens (32) is positioned approximately 150 [micro]m underneath the device.
In-depth theoretical guidance on how to design a magnetic lens with desired enhancement by using superconductors is not given in these designs.
However, because a free-space "magnetic lens," which would focus the magnetic field, is fundamentally impossible, magnetic recording is intrinsically a near-field technology; the magnetic head used to write or read bits has to be in close proximity to the magnetic information layer.