x-ray emission
31Gamma-ray astronomy — is the astronomical study of the cosmos with gamma rays. Early history Long before experiments could detect gamma rays emitted by cosmic sources, scientists had known that the universe should be producing these photons. Work by Eugene Feenberg… …
32X-ray source — ▪ astronomy in astronomy, any of a class of cosmic objects that emit radiation at X ray wavelength. Because the Earth s atmosphere absorbs X rays (X ray) very efficiently, X ray telescopes and detectors must be carried high above it by… …
33X-ray background — The observed X ray background is thought to result from, at the soft end (below 0.3 keV), Galactic X ray emission (the galactic X ray background), and, at the hard end (above 0.3keV), from a combination of many unresolved X ray sources outside of …
34Alpha particle X-ray spectrometer — APXS is also an abbreviation for APache eXtenSion tool, an extension for Apache web servers. [ Mars Pathfinder Sojourner rover] An Alpha Particle X Ray Spectrometer (APXS) (or Alpha Proton X Ray Spectrometer for the Pathfinder mission) is a… …
35X-ray tube — An X ray tube is a vacuum tube that produces X rays. They are used in X ray machines. X rays are part of the electromagnetic spectrum, an ionizing radiation with wavelengths shorter than ultraviolet light. X ray tubes evolved from experimental… …
36Compton Gamma Ray Observatory — General information NSSDC ID 1991 027B Organization NASA …
37X-ray absorption fine structure — (XAFS) is a specific structure observed in X ray absorption spectroscopy (XAS). By analyzing the XAFS, information can be acquired on the local structure and on the unoccupied electronic states.The X ray absorption spectra show a steep rise at… …
38Extended X-Ray Absorption Fine Structure — (EXAFS), or more simply X ray Absorption Spectroscopy (XAS), is an experimental method in physics and chemistry of determining the bonding of solids by analyzing oscillations in x ray absorption versus photon energy that are caused by… …
39spectre d'émission de rayons X — rentgeno spinduliuotės spektras statusas T sritis radioelektronika atitikmenys: angl. X ray emission spectrum; X ray radiation spectrum vok. Emissionsröntgenspektrum, n; Röntgenemissionsspektrum, n rus. спектр рентгеновского излучения, m pranc.… …
40X-ray radiation spectrum — rentgeno spinduliuotės spektras statusas T sritis radioelektronika atitikmenys: angl. X ray emission spectrum; X ray radiation spectrum vok. Emissionsröntgenspektrum, n; Röntgenemissionsspektrum, n rus. спектр рентгеновского излучения, m pranc.… …
