TY - JOUR
T1 - Laboratory astrophysics survey of key x-ray diagnostic lines using a microcalorimeter on an electron beam ion trap
AU - Barbera, Marco
AU - Haller, Eugene
AU - Silver, null
AU - Kink, null
AU - Kink, null
AU - Schnopper, Herbert W.
AU - Brickhouse, null
AU - Bandler, Simon
AU - Takacs, null
AU - Beeman, Jeffery
AU - Gillaspy, null
AU - Laming, null
AU - Madden, Norman
AU - Barbera, null
AU - Porto, null
AU - Landis, null
AU - Murray, Stephen
PY - 2000
Y1 - 2000
N2 - 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 conditions that exist in astrophysical sources. We used a microcalorimeter for such laboratory astrophysics studies because it has a resolving power ≈1000, quantum efficiency approaching 100%, and a bandwidth that spans the X-ray energies from 0.2 keV to 10 keV. Our microcalorimeter, coupled with an X-ray optic to increase the effective solid angle, provides a significant new capability for laboratory astrophysics measurements. Broadband spectra obtained from the National Institute of Standards and Technology EBIT with an energy resolution approaching that of a Bragg crystal spectrometer are presented for nitrogen, oxygen, neon, argon, and krypton in various stages of ionization. We have compared the measured line intensities to theoretical predictions for an EBIT plasma.
AB - 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 conditions that exist in astrophysical sources. We used a microcalorimeter for such laboratory astrophysics studies because it has a resolving power ≈1000, quantum efficiency approaching 100%, and a bandwidth that spans the X-ray energies from 0.2 keV to 10 keV. Our microcalorimeter, coupled with an X-ray optic to increase the effective solid angle, provides a significant new capability for laboratory astrophysics measurements. Broadband spectra obtained from the National Institute of Standards and Technology EBIT with an energy resolution approaching that of a Bragg crystal spectrometer are presented for nitrogen, oxygen, neon, argon, and krypton in various stages of ionization. We have compared the measured line intensities to theoretical predictions for an EBIT plasma.
KW - Atomic data
KW - Atomic processes
KW - Line: Identification
KW - Methods: Laboratory plasmas
KW - Nuclear and High Energy Physics
KW - Space and Planetary Science
KW - X-rays: General
KW - Atomic data
KW - Atomic processes
KW - Line: Identification
KW - Methods: Laboratory plasmas
KW - Nuclear and High Energy Physics
KW - Space and Planetary Science
KW - X-rays: General
UR - http://hdl.handle.net/10447/215276
UR - http://iopscience.iop.org/0004-637X/
M3 - Article
VL - 541
SP - 495
EP - 500
JO - THE ASTROPHYSICAL JOURNAL
JF - THE ASTROPHYSICAL JOURNAL
SN - 0004-637X
ER -