41 Result(s)
within
J Rodriguez
Physics
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Article
Effects of Environmental Oxygen Content and Dissolved Oxygen on the Surface Tension and Viscosity of Liquid Nickel
The NASA Marshall Space Flight Center’s electrostatic levitation (ESL) laboratory has recently added an oxygen partial pressure controller. This system allows the oxygen partial pressure within the vacuum cham...
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Article
Open AccessSensitivity of NEXT-100 to neutrinoless double beta decay
NEXT-100 is an electroluminescent high-pressure xenon gas time projection chamber that will search for the neutrinoless double beta (0νββ) decay of 136Xe. The detector possesses two features of great value for 0ν...
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Article
Open AccessFirst proof of topological signature in the high pressure xenon gas TPC with electroluminescence amplification for the NEXT experiment
The NEXT experiment aims to observe the neutrinoless double beta decay of 136Xe in a high-pressure xenon gas TPC using electroluminescence (EL) to amplify the signal from ionization. One of the main advantages of...
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Article
The Large Observatory for X-ray Timing (LOFT)
High-time-resolution X-ray observations of compact objects provide direct access to strong-field gravity, to the equation of state of ultradense matter and to black hole masses and spins. A 10 m2-class instrument...
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Article
Open AccessTriple F—a comet nucleus sample return mission
The Triple F (Fresh From the Fridge) mission, a Comet Nucleus Sample Return, has been proposed to ESA’s Cosmic Vision program. A sample return from a comet enables us to reach the ultimate goal of cometary resear...
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Article
OSIRIS – The Scientific Camera System Onboard Rosetta
The Optical, Spectroscopic, and Infrared Remote Imaging System OSIRIS is the scientific camera system onboard the Rosetta spacecraft (Figure 1). The advanced high performance imaging system will be pivotal for...
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Article
The Grain Impact Analyser and Dust Accumulator (GIADA) Experiment for the Rosetta Mission: Design, Performances and First Results
The Grain Impact Analyser and Dust Accumulator (GIADA) onboard the ROSETTA mission to comet 67P/Churyumov–Gerasimenko is devoted to study the cometary dust environment. Thanks to the rendezvous configuration o...
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Chapter
The Giada Experiment for the Rosetta Mission
The Grain Impact Analyser and Dust Accumulator (GIADA) instrument, on board the ESA Rosetta mission, shall analyse the physical and dynamical properties of grains ejected by the target comet and monitor the co...
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Article
The Accretion-Ejection Instability: Observational Tests
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Chapter and Conference Paper
The Accretion-Ejection Instability: Observational Tests
QPOs are commonly considered to originate in the disks of X-ray binaries. One thus expects, and most often observes, that the QPO frequency decreases as the disk inner radius increases. However Sobczak et al. (19...
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Article
The 2000 April multiwavelength campaign of GRS 1915+105
We report results from multiwavelength observations of the microquasarGRS 1915+105 performed during the 2000 April campaign. This is one ofthe biggest campaigns ever made for this source covering the broadband...
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Chapter
Flight Demonstration of a 10 K Sorption Cryocooler
The Brilliant Eyes Ten-Kelvin Sorption Cryocooler Experiment (BETSCE), flown on STS-77 in May 1996, was the first-ever space flight of chemisorption cryocooler technology. BETSCE measured and validated critica...
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Chapter
Ground Testing of a 10 K Sorption Cryocooler Flight Experiment (BETSCE)
The Brilliant Eyes Ten-Kelvin Sorption Cryocooler Experiment (BETSCE) is a Space Shuttle side-wall-mounted flight experiment designed to demonstrate 10 K sorption cryocooler technology in a space environment. ...
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Chapter
Dynamic Simulation of a Periodic 10 K Sorption Cryocooler
A transient thermal simulation model has been developed to simulate the dynamic performance of a multiple-stage 10 K sorption cryocooler for spacecraft sensor cooling applications that require periodic quick-c...
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Chapter
Data Analysis in Time-Resolved Powder Diffractometry
Thermodiffractometric or time-resolved experiments in powder diffraction give us a great amount of data, characterizing the surfaces I(θ.T) or I(θ,T).
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Chapter
Phase Transitions In Sr 2 Co 2 O 5: a Neutron Diffraction Study
Sr2Co2O5, when quenched to room temperature from 910°C, adopts a metastable brownmillerite structure (B). This structure as a result of vacancy ordering in the parent perovskite SrCoO 3 ...
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Article
Mössbauer characterization of LixFe3O4
Mössbauer spectra of lithium intercalated Fe3O4, have been recorded at 300 K and 4.2 K. It has been observed that lithium can be incorporated and/or extruded at room temperature. The coexistence of lithiated and ...
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Chapter
Poly (N-Acyl Ethyleneimines) with Polarizable Aromatic Side Chain Substituents and Their Complexes: Synthesis, Structure and Electronic Properties
Our objectives in this work were to produce electrically interesting polymers with the following characteristics: 1. At some stage they should be formable, either through heat or solution; 2. The polymers shou...
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Chapter and Conference Paper
Orientation of Short-Lived Mercury Isotopes by Means of Optical Pum** Detected by β and γ Radiation
The expansion of optical spectroscopy to short-lived isotopes (T1/2~sec) from the valley of nuclear stability encounters several difficulties:
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Article
Die Ausbeute der Kernreaktion Al27(d, 2p) Mg27
Es wurde der totale Wirkungsquerschnitt der Reaktion Al27(d, 2p)Mg bestimmt, indem ihre Sättigungsaktivität mit jener der gleichzeitig verlaufenden Reaktion Al27(d, pα)Na24 verglichen wurde, deren Wirkungsquersch...
