Not exact matches
To break this limit in crystal size, an extremely bright X-ray beam was needed, which was obtained using a so - called free - electron laser (FEL), in which a beam of high - speed electrons is guided through a
magnetic undulator causing them to
emit laser - like X-ray
pulses.
For example, they are investigating networks of nerve cells by detecting the
magnetic field each nerve cell
pulse emits.
In its rotating
magnetic field, electrons and positrons are accelerated up to relativistic energies and
emit radiation that arrives to our telescopes in the form of
pulses every 33 millisecond, each time the neutron star rotates and meets our telescopic sight.