Search results for "Spectrograph"

showing 3 items of 33 documents

SPI: The spectrometer aboard INTEGRAL

2003

SPI is a high spectral resolution gamma-ray telescope on board the ESA mission INTEGRAL (International Gamma Ray Astrophysics Laboratory). It consists of an array of 19 closely packed germanium detectors surrounded by an active anticoincidence shield of BGO. The imaging capabilities of the instrument are obtained with a tungsten coded aperture mask located 1.7 m from the Ge array. The fully coded field-of-view is 16º, the partially coded field of view amounts to 31º, and the angular resolution is 2.5º. The energy range extends from 20 keV to 8 MeV with a typical energy resolution of 2.5 keV at 1.3 MeV. Here we present the general concept of the instrument followed by a brief description of …

Astrophysics::High Energy Astrophysical PhenomenaField of viewSpectroscopicUNESCO::ASTRONOMÍA Y ASTROFÍSICAlaw.inventionTelescopeOpticslawAngular resolutionCoded apertureSpectral resolutionSpectrographDetector ; Spectrograph ; Techniques ; Spectroscopic:ASTRONOMÍA Y ASTROFÍSICA::Astronomía óptica [UNESCO]PhysicsSpectrographSpectrometerbusiness.industryUNESCO::ASTRONOMÍA Y ASTROFÍSICA::Astronomía ópticaResolution (electron density)Astrophysics::Instrumentation and Methods for AstrophysicsAstronomy and AstrophysicsDetectorTechniquesSpace and Planetary Sciencebusiness:ASTRONOMÍA Y ASTROFÍSICA [UNESCO]
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Laser-induced plasma spectroscopy to as low as 130 nm when a gas-purged spectrograph and ICCD detection are used.

2003

An experimental setup is described for measuring laser-induced plasma emission spectra in the near vacuum UV with a Czerny-Turner spectrograph and intensified charge-coupled device under atmospheric pressure. With a simple gas-purge technique, emission lines down to 130 nm could be recorded. The strongest emission lines of bromine, chlorine, and iodine in the near vacuum UV are easily detected.

Materials scienceBromineAtmospheric pressurebusiness.industryMaterials Science (miscellaneous)chemistry.chemical_elementPlasmaLaserIndustrial and Manufacturing Engineeringlaw.inventionOpticschemistrylawLaser-induced breakdown spectroscopyEmission spectrumBusiness and International ManagementbusinessSpectroscopySpectrographAstrophysics::Galaxy AstrophysicsApplied optics
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Repetition priming: Is music special?

2005

Using short and long contexts, the present study investigated musical priming effects that are based on chord repetition and harmonic relatedness. A musical target (a chord) was preceded by either an identical prime or a different but harmonically related prime. In contrast to words, pictures, and environmental sounds, chord processing was not facilitated by repetition. Experiments 1 and 2 using single-chord primes showed either no significant difference between chord repetition and harmonic relatedness or facilitated processing for harmonically related targets. Experiment 3 using longer prime contexts showed that musical priming depended more on the musical function of the target in the p…

Sound Spectrographymedia_common.quotation_subjectRepetition primingPilot Projects050109 social psychologyExperimental and Cognitive PsychologyMusical050105 experimental psychologyPitch DiscriminationPerceptionReaction TimeHumans0501 psychology and cognitive sciencesGeneral Psychologymedia_commonCommunicationbusiness.industry05 social sciencesSignificant differenceEnvironmental soundsAssociation LearningCognitionMemory Short-TermAuditory PerceptionChord (music)CuesPsychologybusinessPriming (psychology)MusicPsychoacousticsCognitive psychologyThe Quarterly Journal of Experimental Psychology Section A
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