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Astronomical imaging Fourier spectroscopy at far-infrared wavelengths
Naylor, David A.; Gom, Brad G.; van der Wiel, Matthijs H. D. +1 more
The principles and practice of astronomical imaging Fourier transform spectroscopy (FTS) at far-infrared wavelengths are described. The MachâZehnder (MZ) interferometer design has been widely adopted for current and future imaging FTS instruments; we compare this design with two other common interferometer formats. Examples of three instruments …
Hydrogen and methane in Titan's atmosphere: chemistry, diffusion, escape, and the Hunten limiting flux principle (This article is part of a Special Issue that honours the work of Dr. Donald M. Hunten FRSC who passed away in December 2010 after a very illustrious career)
Strobel, Darrell F.
One of Professor Donald M. Hunten's lasting contributions to the field of planetary atmospheres was the principle of the (Hunten) limiting flux, where the escape of light species is limited by the rate at which they can diffuse through the atmosphere. While his limiting flux expression has been well tested for hydrogen's escape from the Earth's at…
The 3s23p3d3Foterm in the Si-like spectrum of Fe (Fe XIII)
Del Zanna, Giulio; Träbert, Elmar; Ishikawa, Yasuyuki +1 more
The XRS microcalorimeter spectrometer at the Livermore electron beam ion trap
Boyce, K. R.; Kilbourne, C. A.; Porter, F. S. +9 more
NASAs X-ray spectrometer (XRS) microcalorimeter instrument has been operating at the electron beam ion trap (EBIT) facility at Lawrence Livermore National Laboratory since July of 2000. The spectrometer is currently undergoing its third major upgrade to become an easy to use and extremely high-performance instrument for a broad range of EBIT exper…
High-resolution spectroscopy of K-shell praseodymium with a high-energy microcalorimeter
Boyce, K. R.; Kilbourne, C. A.; Porter, F. S. +7 more
We present a measurement of the K-shell spectrum of He-like through Be-like praseodymium ions trapped in the Livermore SuperEBIT electron beam ion trap using a bismuth absorber pixel on the XRS/EBIT microcalorimeter. This measurement is the first of its kind where the n=2 to n=1 transitions of the various charge states are spectroscopically resolv…