KR SPECTRA FROM AN ELECTRON-BEAM ION TRAP: 300 NM TO 460 NM

Kr spectra from 300 nm to 460 nm produced in an electron-beam ion trap (EBIT) are reported in this work. The spectra include magnetic dipole (M1) transitions from Kr XXIII and Kr XXII, as well as electric dipole (E1) lines of Kr II and Kr III. Two new capabilities of the EBIT at the National Institute of Standards and Technology, time resolved data acquisition and extracted ion analysis, are used to aid in the charge state identification.