Laboratory astrophysics survey of key x-ray diagnostic lines using a microcalorimeter on an electron beam ion trap

摘要: Cosmic plasma conditions created in an electron beam ion trap (EBIT) make it possible to simulate the dependencies of key diagnostic X-ray lines on density, temperature, and excitation that exist astrophysical sources. We used a microcalorimeter for such laboratory astrophysics studies because has resolving power ≈1000, quantum efficiency approaching 100%, bandwidth spans energies from 0.2 keV 10 keV. Our microcalorimeter, coupled with optic increase effective solid angle, provides significant new capability measurements. Broadband spectra obtained National Institute Standards Technology EBIT energy resolution Bragg crystal spectrometer are presented nitrogen, oxygen, neon, argon, krypton various stages ionization. have compared measured line intensities theoretical predictions plasma.