32 citations · 91 across the 7 of their papers we have counts for
7 papers
Simple, compact, high-resolution monochromatic x-ray source for characterization of x-ray calorimeter arrays
M. A. Leutenegger, M. E. Eckart, S. J. Moseley +6
X-ray calorimeters routinely achieve very high spectral resolution, typically a few eV full width at half maximum (FWHM). Measurements of calorimeter line shapes are usually domina…
Performance of the PRAXyS X-ray Polarimeter
W. B. Iwakiri, J. K. Black, R. Cole +11
The performance of the Time Projection Chamber (TPC) polarimeter for the Polarimeter for Relativistic Astrophysical X-ray Sources (PRAXyS) Small Explorer was evaluated using polari…
Photoelectron track length distributions measured in a negative ion time projection chamber
Z. R. Prieskorn, J. E. Hill, P. E. Kaaret +1
We report photoelectron track length distributions between 3 and 8 keV in gas mixtures of Ne+CO2+CH3NO2 (260:80:10 Torr) and CO2+CH3NO2 (197.5: 15 Torr). The measurements were made…
Gas Gain Measurements from a Negative Ion TPC X-ray Polarimeter
Z. Prieskorn, J. E. Hill, P. E. Kaaret +2
Gas-based time projection chambers (TPCs) have been shown to be highly sensitive X-ray polarimeters having excellent quantum efficiency while at the same time achieving large modul…
A benign, low Z electron capture agent for negative ion TPCs
C. J. Martoff, M. P. Dion, M. Hosack +2
We have identified nitromethane (CHNO) as an effective electron capture agent for negative ion TPCs (NITPCs). We present drift velocity and longitudinal diffusion measureme…
The imaging X-ray detector for Lobster-ISS
J. K. Black, A. N. Brunton, N. P. Bannister +2
Lobster-ISS is a revolutionary astrophysical X-ray all-sky monitor scheduled for deployment as an attached payload on the International Space Station (ISS) in 2009. Using a new wid…
X-ray polarimetry with an active-matrix pixel proportional counter
J. K. Black, P. Deines-Jones, S. E. Ready +1
We report the first results from an X-ray polarimeter with a micropattern gas proportional counter using an amorphous silicon active matrix readout. With 100% polarized X-rays at 4…