Search Results - "Kelley, R L"
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Laboratory Simulation of Charge Exchange-Produced X-ray Emission from Comets
Published in Science (American Association for the Advancement of Science) (06-06-2003)“…In laboratory experiments using the engineering spare microcalorimeter detector from the ASTRO-E satellite mission, we recorded the x-ray emission of highly…”
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Toward Large Field-Of-View High-Resolution X-Ray Imaging Spectrometers: Microwave Multiplexed Readout of 28 TES Microcalorimeters
Published in Journal of low temperature physics (01-11-2018)“…We performed small-scale demonstrations at GSFC of high-resolution Xray TES microcalorimeters read out using a microwave SQUID multiplexer. This work is part…”
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The Digital Processing System for the Soft X-Ray Spectrometer Onboard ASTRO-H -The Design and the Performance
Published in IEEE transactions on nuclear science (01-04-2012)“…We report the design and the performance of the engineering model of the digital signal processing system called the Pulse Shape Processor (PSP) for the Soft…”
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A High Spectral Resolution Observation of the Soft X-Ray Diffuse Background with Thermal Detectors
Published in The Astrophysical journal (01-09-2002)Get full text
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OBSERVED LIMITS ON CHARGE EXCHANGE CONTRIBUTIONS TO THE DIFFUSE X-RAY BACKGROUND
Published in The Astrophysical journal (20-10-2012)“…We present a high-resolution spectrum of the diffuse X-ray background from 0.1 to 1 keV for a ~1 sr region of the sky centered at l = 90[degrees], b =…”
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Energy-dependent excitation cross section measurements of the diagnostic lines of Fe XVII
Published in Physical review letters (30-06-2006)“…By implementing a large-area, gain-stabilized microcalorimeter array on an electron beam ion trap, the electron-impact excitation cross sections for the…”
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In-Orbit Performance of the Digital Electronics for the X-Ray Microcalorimeter Onboard the Hitomi Satellite
Published in Journal of low temperature physics (01-11-2018)“…The pulse shape processor is the onboard digital electronics unit of the X-ray microcalorimeter instrument—the soft X-ray spectrometer—onboard the Hitomi…”
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Impact of the IVF laboratory environment on human preimplantation embryo phenotype
Published in Journal of developmental origins of health and disease (01-08-2017)“…The phenotype of the human embryo conceived through in vitro fertilization (IVF), that is its morphology, developmental kinetics, physiology and metabolism,…”
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Specific isoforms of squid, a Drosophila hnRNP, perform distinct roles in Gurken localization during oogenesis
Published in Genes & development (01-04-1999)“…Heterogeneous nuclear RNA-binding proteins, hnRNPs, have been implicated in nuclear export of mRNAs in organisms from yeast to humans. A germ-line mutation in…”
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Association and spreading of the Drosophila dosage compensation complex from a discrete roX1 chromatin entry site
Published in The EMBO journal (01-05-2001)“…In Drosophila, dosage compensation is controlled by the male‐specific lethal (MSL) complex consisting of MSL proteins and roX RNAs. The MSL complex is…”
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X-ray Signature of Charge Exchange in L-shell Sulfur Ions
Published in The Astrophysical journal (01-09-2009)“…The X-ray signature of L-shell charge exchange in sulfur was studied in the laboratory. A comparison of the charge exchange (CX) spectra with those obtained…”
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Development of Embedded Heatsinking Layers for Compact Arrays of X-Ray TES Microcalorimeters
Published in IEEE transactions on applied superconductivity (01-06-2011)“…Transition-edge sensor microcalorimeter arrays in compact geometries and large formats experience local heating from bias power and x-ray hits that must be…”
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SEARCHING FOR keV STERILE NEUTRINO DARK MATTER WITH X-RAY MICROCALORIMETER SOUNDING ROCKETS
Published in The Astrophysical journal (20-11-2015)“…ABSTRACT High-resolution X-ray spectrometers onboard suborbital sounding rockets can search for dark matter candidates that produce X-ray lines, such as…”
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Millisecond Oscillations in the Persistent and Bursting Flux of Aquila X-1 during an Outburst
Published in The Astrophysical journal (01-03-1998)Get full text
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Development of TES Microcalorimeter Arrays for the Micro-X Sounding Rocket Experiment
Published in IEEE transactions on applied superconductivity (01-06-2013)“…The Micro-X sounding rocket program will fly a 128-pixel array of transition-edge-sensor microcalorimeters to enable high-resolution X-ray imaging spectroscopy…”
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Mechanical Cryocooler Noise Observed in the Ground Testing of the Resolve X-ray Microcalorimeter Onboard XRISM
Published in Journal of low temperature physics (01-06-2023)“…Low-temperature detectors often use mechanical coolers as part of the cooling chain in order to reach sub-Kelvin operating temperatures. The microphonic noise…”
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Initial organization of the Drosophila dorsoventral axis depends on an RNA-binding protein encoded by the squid gene
Published in Genes & development (01-06-1993)“…Females mutant for the newly identified squid (sqd) gene are sterile and lay eggs that display only dorsal structures. The resulting embryos are also…”
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LABORATORY MEASUREMENTS OF THE K-SHELL TRANSITION ENERGIES IN L-SHELL IONS OF SI AND S
Published in The Astrophysical journal (10-10-2016)“…ABSTRACT We have measured the energies of the strongest 1s-2 transitions in He- through Ne-like silicon and sulfur ions to an accuracy of using the Lawrence…”
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Fine pitch transition-edge sensor X-ray microcalorimeters with sub-eV energy resolution at 1.5 keV
Published in Applied physics letters (30-11-2015)“…We are developing arrays of X-ray microcalorimeters on a 50-µm pitch that utilize transition-edge sensors as the sensor to measure the temperature rise when…”
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Absorber Materials for Transition-Edge Sensor X-ray Microcalorimeters
Published in Journal of low temperature physics (01-04-2008)“…Arrays of superconducting transition-edge sensors (TES) can provide high spatial and energy resolution necessary for X-ray astronomy. High quantum efficiency…”
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