X-ray and extreme ultraviolet spectroscopy on DIII-D

X-Ray and Extreme Ultraviolet Emission from Comets

The discovery of high energy X-ray emission in 1996 from C/1996 B2 (Hyakutake) has created a surprising new class of X-ray emitting objects. The original discovery (Lisse et al., 1996) and subsequent detection of X-rays from 17 other comets (Table 1) have shown that the very soft (E < 1 keV) emission is due to an interaction between the solar wind and the comet’s atmosphere, and that X-ray emis...

Extending resonant inelastic X-ray scattering to the extreme ultraviolet

Department of Physics, New York University, New York, NY, USA, 2 Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, USA, Department of Condensed Matter Physics and Materials Science, Brookhaven National Laboratory, Upton, NY, USA, Comprehensive Research Organization for Science and Society, Ibaraki, Japan, 5 SPring-8, Japan Atomic Energy Agency, Hyogo, Japan, 6 Physics ...

Soft X - Ray Imaging Design and Analysis Methods on Diii

X-ray Spectroscopy of QSOs with Broad Ultraviolet Absorption Lines

For the population of QSOs with broad ultraviolet absorption lines, we are just beginning to accumulate X-ray observations with enough counts for spectral analysis at CCD resolution. From a sample of eight QSOs [including four Broad Absorption Line (BAL) QSOs and three mini-BAL QSOs] with ASCA or Chandra spectra with more than 200 counts, general patterns are emerging. Their power-law X-ray con...

Tabletop Coherent Extreme Ultraviolet and Soft X - ray Sources Based on High Harmonic Generation

High harmonic generation (HHG) is a fascinating strong-field physics phenomenon that occurs when a laser pulse with a moderate intensity interacts with atoms and partially ionizes the atoms. A series of harmonics are generated at similar efficiencies and extend to a few tenth, even thousandth, order harmonics at the extreme ultraviolet (EUV) and soft X-ray range. Such an unprecedented broadband...