Refrigerated electron beam ion trap (REBIT) combines a compressed electron
with a magnetically trapped ion plasma. New cryogenic vacuum
technology allows the trap to remain at superconducting temperatures
without liquid Helium, simplifying maintenance and operations and making the
portable. Scientists at the CfA plan to use the REBIT to study atomic
processes at work in astrophysical sources.
Unlike an astrophysical source, the REBIT plasma can be
controlled. Only one element can be studied at a time, and the
ionization state of the plasma can be dialed by changing the energy of
the electron beam. The high energy spectrum can then be measured using
an X-ray microcalorimeter or other detector.
Nancy Brickhouse, Eric Silver, Kate Kirby, Kelly Chance, Roger Brissenden