Deuterium
The discovery of deuterium won Urey a Nobel Prize in 1934. Deuterium is destroyed in the interiors of stars faster than it is ... Deuterium has a natural abundance in Earth's oceans of about one atom of deuterium among every 6,420 atoms of hydrogen (see ... Deuterium occurs in trace amounts naturally as deuterium gas, written 2 H 2 or D2, but most of the naturally occurring ... Deuterium-protium ratios thus continue to be an active topic of research in both astronomy and climatology. Deuterium is ...
Deuterium bromide
... is hydrogen bromide with the hydrogen being the heavier isotope deuterium. Hydrogen represents only a small ... "DEUTERIUM BROMIDE". Chemical Book. Retrieved 23 August 2022. v t e (Articles needing additional references from August 2022, ... Hydrogen bromide Heavy water (Water with deuterium in place of normal hydrogens.) "Hydrobromic acid-d". CAS Common Chemistry. ...
Deuterium fusion
The onset of deuterium burning is called deuterium flash. Deuterium burning induced instability after this initial deuterium ... Objects above the deuterium-fusion minimum mass (deuterium burning minimum mass, DBMM) will fuse all their deuterium in a very ... The deuterium concentration reflects the fact that the gasses are a mixture of ordinary hydrogen and helium and deuterium. The ... Deuterium fusion, also called deuterium burning, is a nuclear fusion reaction that occurs in stars and some substellar objects ...
Deuterium NMR
... is NMR spectroscopy of deuterium (2H or D), an isotope of hydrogen. Deuterium is an isotope with spin = 1, unlike ... Deuterium NMR has a range of chemical shift similar to proton NMR but with poor resolution, due to the smaller magnitude of the ... Deuterium NMR spectra are especially informative in the solid state because of its relatively small quadrupole moment in ... It may be used to verify the effectiveness of deuteration: a deuterated compound will show a strong peak in deuterium NMR but ...
Deuterium arc lamp
A deuterium arc lamp (or simply deuterium lamp) is a low-pressure gas-discharge light source often used in spectroscopy when a ... The arc created excites the molecular deuterium contained within the bulb to a higher energy state. The deuterium then emits ... The spectral line structure of deuterium does not differ noticeably from that of light hydrogen, but deuterium has a slightly ... Paper on UV analysis which describes deuterium lamp advantage Accessed Sept 25, 2014. "Deuterium Lamps". Photron Pty Ltd. 2011- ...
Hydrogen-deuterium exchange
... mass spectrometry can determine the overall deuterium content of molecules which have undergone H/D ... the molar amount of deuterium should be high compared to the exchangeable protons of the substrate. For instance, deuterium is ... The deuterium nucleus is twice as heavy as the hydrogen nucleus because it contains a neutron as well as a proton. Thus a ... Hydrogen-deuterium exchange (also called H-D or H/D exchange) is a chemical reaction in which a covalently bonded hydrogen atom ...
Deuterium-tritium fusion
... (sometimes abbreviated D+T) is a type of nuclear fusion in which one deuterium nucleus fuses with one ... In deuterium-tritium fusion, one deuterium nucleus fuses with one tritium nucleus, yielding one helium nucleus, a free neutron ... Deuterium, tritium Deuterium fusion "Nuclear Fusion". Georgia State University. Retrieved January 29, 2021. Lanctot, Matthew. " ... Deuterium-tritium fusion is planned to be used in ITER, as well as many other proposed fusion reactors. It provides many ...
Deuterium-depleted water
Deuterium-depleted water has a lower concentration of deuterium (2H) than occurs in nature at sea level. Deuterium is a ... Deuterium-depleted water (DDW) is water which has a lower concentration of deuterium than occurs naturally at sea level on ... Deuterium atoms have about twice the atomic mass of normal hydrogen atoms as a result. Heavy water consists of water molecules ... Deuterium-depleted water can be produced in laboratories and factories. Various technologies are used for its production, such ...
Hydrogen safety
"DEUTERIUM , CAMEO Chemicals , NOAA". cameochemicals.noaa.gov. Retrieved Nov 29, 2020. Utgikar, Vivek P.; Thiesen, Todd (2005 ...
List of gases
"Deuterium". pubchem.ncbi.nlm.nih.gov. Retrieved 2020-02-14. PubChem. "Tritium". pubchem.ncbi.nlm.nih.gov. Retrieved 2020-02-14 ...
Ivy Mike
The cryogenic deuterium provided the fuel for the "secondary" (fusion) stage of the explosion.(p43) At one end of the ... Due to its physical size and fusion fuel type (cryogenic liquid deuterium), the "Mike" device was not suitable for use as a ... It weighed approximately 54 short tons (49 metric tons). It was capable of holding 1,000 L (260 U.S. gal) of liquid deuterium, ... "Deuterium" (PDF). p. 8. Reichhardt, Tony (November 2, 2017). "The First Hydrogen Bomb". Air & Space. Retrieved 22 January 2020 ...
Rudolph Schoenheimer
Schoenheimer and his colleagues began their research by conducting experiments with the use of deuterium. Deuterium, which is a ... One of the methods used in the experiment involved heavy water administered into animals in order to analyse the deuterium ... Cooper, D.Y, & Osborn, M.E 1999, 'Schoenheimer, Rudolph', American National Biography Helmenstine, A.M 2019, 'Deuterium Facts ... Helmenstine, A.M (2019). "Deuterium Facts". Shemin, David (1942). "The Dynamic State of Body Constituents: By Rudolf ...
Comet Hale-Bopp
Deuterium was also detected in many other hydrogen compounds in the comet. The ratio of deuterium to normal hydrogen was found ... The abundance of deuterium in comet Hale-Bopp in the form of heavy water was found to be about twice that of Earth's oceans. If ... Meier, Roland; Owen, Tobias C. (1999). "Cometary Deuterium". Space Science Reviews. 90 (1-2): 33-43. Bibcode:1999SSRv...90... ... Hale-Bopp's deuterium abundance is typical of all comets, this implies that although cometary impacts are thought to be the ...
Heavy isotope diet
"Deuterium diet". Chemistry & Industry. 84 (9): 30-33. 2020. doi:10.1002/cind.849_7.x. S2CID 240909784. Korneenko, Tatyana V; ... Medicines with some hydrogen atoms substituted with deuterium are called deuterated drugs, while substances that are essential ... such as deuterium 2H or heavy carbon 13C. Biomolecules that incorporate heavier isotopes give rise to more stable molecular ... replacing hydrogen with deuterium "reinforces" the bond due to the kinetic isotope effect, and such reinforced biomolecules ...
Ordinal numeral
... deuterium, tritium; Proto-Isaiah, Deutero-Isaiah. Numbers beyond three are rare; those beyond four are obscure. The first ...
David J. Wineland
Wineland, D. J.; Ramsey, N. F. (1972). "Atomic Deuterium Maser". Physical Review A. 5 (2): 821. Bibcode:1972PhRvA...5..821W. ... His doctoral dissertation is titled "The Atomic Deuterium Maser". He then performed postdoctoral research in Hans Dehmelt's ...
Hydrogen
Nuclear fusion fuel: Deuterium is used in nuclear fusion reactions. Isotopic labeling: Deuterium compounds have applications in ... Water enriched in molecules that include deuterium instead of normal hydrogen is called heavy water. Deuterium and its ... except for deuterium and tritium. The symbols D and T (instead of 2 H and 3 H) are sometimes used for deuterium and tritium, ... All deuterium in the universe is thought to have been produced at the time of the Big Bang, and has endured since that time. ...
Anthony Czarnik
In 2009, Czarnik submitted 240 patent applications covering the use of deuterium-substitution in drug discovery.. He has also ... DeWitt, Sheila; Czarnik, Anthony W.; Jacques, Vincent (8 October 2020). "Deuterium-Enabled Chiral Switching (DECS) Yields ... Czarnik, Anthony W. (3 September 2013). "Deuterium-enriched bupropion". Google Patents. Czarnik, Anthony W. (25 July 2017). " ... "Deuterium-enriched aldehydesDeuterium-enriched aldehydes". Google Patents. US patent 9044423, W. Czarnik, Anthony & A. McKinney ...
Friedwardt Winterberg
Most recently he has designed a giant spacecraft, propelled with deuterium micro-detonations ignited by a GeV proton beam, ... Most recently, Winterberg has proposed the ignition of a deuterium microexplosion, with a gigavolt super-Marx generator, which ... 174, 212 (1968) Winterberg, Friedwardt (December 1, 2008). "Ignition of a deuterium micro-detonation with a gigavolt super marx ... "Deuterium microbomb rocket propulsion". arXiv:0812.0397. Bibcode:2008arXiv0812.0397W. {{cite journal}}: Cite journal requires , ...
1946 in science
March 23 - Gilbert N. Lewis (born 1875), American chemist; first to isolate deuterium. March 26 - Gerhard Heilman (born 1859), ...
Epitope mapping
2014). "Autoantibody epitope mapping by hydrogen-deuterium exchange mass spectrometry at nearly single amino acid residue ... Hydrogen-deuterium exchange (HDX). This method gives information about the solvent accessibility of various parts of the ...
Jay Pasachoff
Pasachoff, Jay M.; Fowler, William A. (1974). "Deuterium in the Universe". Scientific American 230, #5 (May), 108-118; ... concentrating on deuterium. Pasachoff was active in educational and curriculum matters. He was U.S. National Liaison to and was ...
Prices of chemical elements
"DEUTERIUM (D, 99.8%) (D2,99.6%+HD,0.4%)". Cambridge Isotope Laboratories. Archived from the original on 2020-04-16. "DEUTERIUM ... For individual isotopes except deuterium, density of base element is used. Spot market price range on 3 February 2020. Market ... "Physical Properties for Deuterium". Air Products & Chemicals. Archived from the original on 2019-08-27. " ... For individual isotopes except deuterium, density of base element is used. Values in parentheses are theoretical predictions. ...
Ammonia
The detection of triply deuterated ammonia was considered a surprise as deuterium is relatively scarce. It is thought that the ... Millar, T. J. (2003). "Deuterium Fractionation in Interstellar Clouds". Space Science Reviews. 106 (1): 73-86. Bibcode:2003SSRv ...
Nebular hypothesis
2013). "Deuterium Burning in Massive Giant Planets and Low-mass Brown Dwarfs Formed by Core-nucleated Accretion". The ... Around this time the protostar begins to fuse deuterium. If the protostar is sufficiently massive (above 80 Jupiter masses (MJ ... Stahler, Steven W. (1988). "Deuterium and the Stellar Birthline". The Astrophysical Journal. 332: 804-825. Bibcode:1988ApJ... ...
Properties of water
Light water refers to deuterium-depleted water (DDW), water in which the deuterium content has been reduced below the standard ... Deuterium oxide, D 2O, is also known as heavy water because of its higher density. It is used in nuclear reactors as a neutron ... Water with one protium and one deuterium atom HDO occur naturally in ordinary water in low concentrations (~0.03%) and D 2O in ... Only 155 ppm include deuterium (2 H or D), a hydrogen isotope with one neutron, and fewer than 20 parts per quintillion include ...
Protostar
Theory predicts, however, that the hydrogen isotope deuterium (hydrogen-2) fuses with hydrogen-1, creating helium-3. The heat ... Stahler, S. W. (1988). "Deuterium and the Stellar Birthline". Astrophysical Journal. 332: 804. Bibcode:1988ApJ...332..804S. doi ...
Chronology of the universe
Similarly, deuterium fuses extremely easily; any alternative explanation must also explain how conditions existed for deuterium ... and all the neutrons fuse to form deuterium, a hydrogen isotope, and most of the deuterium quickly fuses to form helium-4. ... A small amount of deuterium is left unfused because of the very short duration. Therefore, the only stable nuclides created by ... From about 2 minutes, the falling temperature means that deuterium no longer unbinds, and is stable, and starting from about 3 ...
National Spherical Torus Experiment
NSTX was a "proof of principle" experiment and therefore employed deuterium plasmas only. If successful it was to be followed ... produced a world-record 10.7 megawatts of fusion power from a plasma composed of equal parts of deuterium and tritium, a fuel ... by similar devices, eventually including a demonstration power reactor (e.g. ITER), burning deuterium-tritium fuel. NSTX ...
Astrophysical X-ray source
These objects cannot fuse deuterium. With no strong central nuclear energy source, the interior of a brown dwarf is in a rapid ...