|
Scintillating Bolometer
A scintillating bolometer (or luminescent bolometer) is a scientific instrument using particle physics in the search for events with low energy deposition. These events could include dark matter, low energy solar neutrinos, double beta decay or rare radioactive decay. It works by simultaneously measuring both the light pulse and heat pulse generated by a particle interaction within its internal scintillator crystal. The device was originally proposed by L. Gonzalez-Mestres and D. Perret-Gallix (LAPP, IN2P3/CNRS) In their http://www.iaea.org/inis/collection/NCLCollectionStore/_Public/21/000/21000903.pdf rapporteur contribution to the Proceedings of the XXIV International Conference on High-Energy Physics, Munich, August 1988, Gonzalez-Mestres and Perret-Gallix wrote : ''Perhaps bolometry should in some cases be combined with other detection techniques (luminescence?) in order to produce a primary fast signal as timing strobe. If light is used as a complementary signature, particle i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scientific Instrument
A scientific instrument is a device or tool used for scientific purposes, including the study of both natural phenomena and theoretical research. History Historically, the definition of a scientific instrument has varied, based on usage, laws, and historical time period. Before the mid-nineteentcenturysuch tools were referred to as "natural philosophical" or "philosophical" apparatus and instruments, and older tools from antiquity to the Middle Ages (such as the astrolabe and pendulum clock) defy a more modern definition of "a tool developed to investigate nature qualitatively or quantitatively." Scientific instruments were made by instrument makers living near a center of learning or research, such as a university or research laboratory. Instrument makers designed, constructed, and refined instruments for purposes, but if demand was sufficient, an instrument would go into production as a commercial product. In a description of the use of the eudiometer by Jan Ingenhousz to s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
University Of Zaragoza
The University of Zaragoza, sometimes referred to as Saragossa University () is a public university with teaching campuses and research centres spread over the three provinces of Aragon, Spain. Founded in 1542, it is one of the oldest universities in Spain, with a history dating back to the Roman period. Prime Ministers Pascual Madoz, Manuel Azaña, Salustiano de Olózaga and Eusebio Bardají, the Nobel Prize laureate and father of modern neuroscience Santiago Ramón y Cajal, the Catholic saint Josemaría Escrivá and the Cuban national hero Jose Marti studied at this university. History Beginnings Ecclesiastical schools were the initial elements of the University of Zaragoza. These schools were later consolidated into the School of Zaragoza, led by Bishop Braulio during the seventh century (who would later be made the patron saint of the university). The School of Arts officially became a university in 1542, though some scholars argue it could be considered a univer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxygen
Oxygen is the chemical element with the symbol O and atomic number 8. It is a member of the chalcogen group in the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds. Oxygen is Earth's most abundant element, and after hydrogen and helium, it is the third-most abundant element in the universe. At standard temperature and pressure, two atoms of the element bind to form dioxygen, a colorless and odorless diatomic gas with the formula . Diatomic oxygen gas currently constitutes 20.95% of the Earth's atmosphere, though this has changed considerably over long periods of time. Oxygen makes up almost half of the Earth's crust in the form of oxides.Atkins, P.; Jones, L.; Laverman, L. (2016).''Chemical Principles'', 7th edition. Freeman. Many major classes of organic molecules in living organisms contain oxygen atoms, such as proteins, nucleic acids, carbohydrates, and fats ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Germanium
Germanium is a chemical element with the symbol Ge and atomic number 32. It is lustrous, hard-brittle, grayish-white and similar in appearance to silicon. It is a metalloid in the carbon group that is chemically similar to its group neighbors silicon and tin. Like silicon, germanium naturally reacts and forms complexes with oxygen in nature. Because it seldom appears in high concentration, germanium was discovered comparatively late in the discovery of the elements. Germanium ranks near fiftieth in relative abundance of the elements in the Earth's crust. In 1869, Dmitri Mendeleev predicted its existence and some of its properties from its position on his periodic table, and called the element ekasilicon. In 1886, Clemens Winkler at Freiberg University found the new element, along with silver and sulfur, in the mineral argyrodite. Winkler named the element after his country, Germany. Germanium is mined primarily from sphalerite (the primary ore of zinc), though ger ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bismuth
Bismuth is a chemical element with the symbol Bi and atomic number 83. It is a post-transition metal and one of the pnictogens, with chemical properties resembling its lighter group 15 siblings arsenic and antimony. Elemental bismuth occurs naturally, and its sulfide and oxide forms are important commercial ores. The free element is 86% as dense as lead. It is a brittle metal with a silvery-white color when freshly produced. Surface oxidation generally gives samples of the metal a somewhat rosy cast. Further oxidation under heat can give bismuth a vividly iridescent appearance due to thin-film interference. Bismuth is both the most diamagnetic element and one of the least thermally conductive metals known. Bismuth was long considered the element with the highest atomic mass whose nuclei do not spontaneously decay. However, in 2003 it was discovered to be extremely weakly radioactive. The metal's only primordial isotope, bismuth-209, experiences alpha decay at such a m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bismuth Germanate
Bismuth germanium oxide or bismuth germanate is an inorganic chemical compound of bismuth, germanium and oxygen. Most commonly the term refers to the compound with chemical formula (BGO), with the cubic evlitine crystal structure, used as a scintillator. (The term may also refer to a different compound with formula Bi12GeO20, an electro-optical material with sillenite structure, and .) Bi4Ge3O12 Bi4Ge3O12 has a cubic crystal structure (''a'' = 1.0513 nm, ''z'' = 4, Pearson symbol ''cI76'', space group I3d No. 220) and a density of 7.12 g/cm3. When irradiated by X-rays or gamma rays it emits photons of wavelengths between 375 and 650 nm, with peak at 480 nm it produces about 8500 photons per megaelectronvolt of the high energy radiation absorbed. It has good radiation hardness (parameters remaining stable up to 5.104 Gy), high scintillation efficiency, good energy resolution between 5 and 20 MeV, is mechanically strong, and is not hygroscopic. Its melting point ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canfranc Underground Laboratory
The Canfranc Underground Laboratory (LSC) is a world-class deep underground laboratory designed for research in neutrino physics, dark matter and other unusual phenomena in nature that require very low environmental radioactivity to be observed. The location of the LSC, 800 meters below ground, is excavated between the Somport road tunnel and the old railway tunnel, about 8 km long, on the Spain-France border. Today, the LSC is the second largest laboratory in Europe at great depth, in close collaboration with the most important underground laboratories in the international framework: LNGS (Italy), SNOLab (Canada) and Kamioka (Japan). The LSC is a Consortium formed by a Consortium between the 'Spanish Ministry of Science and Innovation'', the 'Government of Aragon'' and the 'University of Zaragoza'' which belongs to the national network of ''' (ICTS). History In the mid-1980s, with the intention of locating an underground laboratory where nuclear and astroparticle physics exper ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ROSEBUD
Rosebud may refer to: * Rose bud, the bud of a rose flower Arts * The name of Jerry Garcia's guitar from 1990 until his death in 1995. * In the 1941 film ''Citizen Kane'', the last words of Charles Foster Kane and an overall plot device. * "Rosebud" (''The Simpsons''), an episode of the television comedy ''The Simpsons'', parodying ''Citizen Kane'' * Rosebud (band), a folk-rock band circa 1970, featuring Judy Henske and Jerry Yester * ''Rosebud'' (Fabergé egg) * ''Rosebud'' (1975 film), an American film * ''Rosebud'' (2019 film), a South Korean film * The Rosebuds, an indie-rock band * "Rosebud", a song by Ryan Adams from the album ''Cold Roses'' * "Rosebud", a song by Sparks from their 1986 album ''Music That You Can Dance To'' * "Rosebud", a song by Manic Street Preachers from their album '' Know Your Enemy (2022 Remastered)'' * Rosebud, the attack command word for Dr. Eric Mason's Doberman Pinschers on the television crime drama season 7, episode 4 of ''Columbo'' * Rosebu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Institut D'astrophysique Spatiale
The Institut d'astrophysique spatiale (IAS; English: Institute of Space Astrophysics) is a French research institute supporting advanced research in aerospace and astrophysics. It is located in Orsay, just south of Paris. It is a public research institute in a partnership with the University of Paris-Saclay. Famous Researchers * Pierre Cox Pierre Cox is a French astronomer. Born in Paris to a Dutch composer father and a Belgian pianist mother, he led a musically-oriented childhood from which he rebelled at age 17 to study physics at the Université de Paris-Sud. He is known for his ..., a French astronomer * Jean-Loup Puget, a French astrophysicist References External link Official website {{DEFAULTSORT:Institut d'astrophysique spatiale Research institutes in France Buildings and structures in Essonne Education in Île-de-France ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Particle Physics
Particle physics or high energy physics is the study of fundamental particles and forces that constitute matter and radiation. The fundamental particles in the universe are classified in the Standard Model as fermions (matter particles) and bosons (force-carrying particles). There are three generations of fermions, but ordinary matter is made only from the first fermion generation. The first generation consists of up and down quarks which form protons and neutrons, and electrons and electron neutrinos. The three fundamental interactions known to be mediated by bosons are electromagnetism, the weak interaction, and the strong interaction. Quarks cannot exist on their own but form hadrons. Hadrons that contain an odd number of quarks are called baryons and those that contain an even number are called mesons. Two baryons, the proton and the neutron, make up most of the mass of ordinary matter. Mesons are unstable and the longest-lived last for only a few hundre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CNRS
The French National Centre for Scientific Research (french: link=no, Centre national de la recherche scientifique, CNRS) is the French state research organisation and is the largest fundamental science agency in Europe. In 2016, it employed 31,637 staff, including 11,137 tenured researchers, 13,415 engineers and technical staff, and 7,085 contractual workers. It is headquartered in Paris and has administrative offices in Brussels, Beijing, Tokyo, Singapore, Washington, D.C., Bonn, Moscow, Tunis, Johannesburg, Santiago de Chile, Israel, and New Delhi. From 2009 to 2016, the CNRS was ranked No. 1 worldwide by the SCImago Institutions Rankings (SIR), an international ranking of research-focused institutions, including universities, national research centers, and companies such as Facebook or Google. The CNRS ranked No. 2 between 2017 and 2021, then No. 3 in 2022 in the same SIR, after the Chinese Academy of Sciences and before universities such as Harvard University, MIT ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scintillator
A scintillator is a material that exhibits scintillation, the property of luminescence, when excited by ionizing radiation. Luminescent materials, when struck by an incoming particle, absorb its energy and scintillate (i.e. re-emit the absorbed energy in the form of light). Sometimes, the excited state is metastable, so the relaxation back down from the excited state to lower states is delayed (necessitating anywhere from a few nanoseconds to hours depending on the material). The process then corresponds to one of two phenomena: delayed fluorescence or phosphorescence. The correspondence depends on the type of transition and hence the wavelength of the emitted optical photon. Principle of operation A scintillation detector or scintillation counter is obtained when a scintillator is coupled to an electronic light sensor such as a photomultiplier tube (PMT), photodiode, or silicon photomultiplier. PMTs absorb the light emitted by the scintillator and re-emit it in the form o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> CNRS")
