Publications (17)
Recombination of W18+ ions with electrons: Absolute rate coefficients from a storage-ring experiment and from theoretical calculations
K. Spruck, N. R. Badnell, C. Krantz +10
We present new experimentally measured and theoretically calculated rate coefficients for the electron-ion recombination of W([Kr] ) forming W. A…
Measurements of Anisotropic Ion Temperatures, Non-Thermal Velocities, and Doppler Shifts in a Coronal Hole
M. Hahn, D. W. Savin
We present a new diagnostic allowing one to measure the anisotropy of ion temperatures and non-thermal velocities as well as Doppler shifts with respect to the ambient magnetic fie…
Observations of Non-thermal Velocity and Comparison with Alfvén Wave Turbulence Model in Solar Active Regions
M. Asgari-Targhi, D. H. Brooks, M. Hahn +3
We present a study of spectral line width measurements from the Extreme Ultraviolet Imaging Spectrometer (EIS) on {\it Hinode}. We used spectral line profiles of Fe {\sc xvi} 262.9…
A beamline for fundamental neutron physics at TRIUMF
S. Ahmed, T. Andalib, M. J. Barnes +44
This article describes the new primary proton beamline 1U at TRIUMF. The purpose of this beamline is to produce ultracold neutrons (UCN) for fundamental-physics experiments. It del…
Initial results from the New Horizons exploration of 2014 MU69, a small Kuiper Belt Object
S. A. Stern, H. A. Weaver, J. R. Spencer +202
The Kuiper Belt is a distant region of the Solar System. On 1 January 2019, the New Horizons spacecraft flew close to (486958) 2014 MU69, a Cold Classical Kuiper Belt Object, a cla…
Storage Ring Cross Section Measurements for Electron Impact Ionization of Fe 7+
M. Hahn, A. Becker, D. Bernhardt +10
We have measured electron impact ionization (EII) for Fe 7+ from the ionization threshold up to 1200 eV. The measurements were performed using the TSR heavy ion storage ring. The i…