In this way there was discovered an entirely new radioactive series which, from its most long-lived member, is now called the neptunium family. From Wordnik.com. [Nobel Prize in Chemistry 1951 - Presentation Speech] Reference
There are no easy intermediate stages, like the neptunium which is a stage between uranium and plutonium. From Wordnik.com. [The Earth Book of Stormgate]
Here the neptunium series fills a gap with mass numbers of the form 4n + 1. From Wordnik.com. [Nobel Prize in Chemistry 1951 - Presentation Speech] Reference
So in four hundred and fifty-eight years -- on average -- it changes to neptunium. From Wordnik.com. [Asimov's Science Fiction]
They called it neptunium after the planet Neptune, whose orbit lies next outwards after Uranus in the solar system. From Wordnik.com. [Nobel Prize in Chemistry 1951 - Presentation Speech] Reference
By irradiating uranium with rapid neutrons or with heavy-hydrogen nuclei, deuterons, other neptunium isotopes were soon produced in. From Wordnik.com. [Nobel Prize in Chemistry 1951 - Presentation Speech] Reference
Although all of these goals were demonstrated, the program was aborted before recycling of neptunium and americium was properly evaluated. From Wordnik.com. [Fast neutron reactors (FBR)] Reference
In a reactor using natural uranium, many neutrons are captured by the uranium atoms of mass 238, forming a new unstable element, neptunium. From Wordnik.com. [The Peacetime Applications of Atomic Energy] Reference
In 1940 McMillan and Seaborg and their fellow-workers had already reported that when neptunium disintegrates it gives rise to an element 94. From Wordnik.com. [Nobel Prize in Chemistry 1951 - Presentation Speech] Reference
Edwin Mattison McMillan received the 1951 Nobel Prize in Chemistry together with Glenn Theodore Seaborg for the discovery of the element neptunium. From Wordnik.com. [Accelerators and Nobel Laureates] Reference
Fast reactors are able to unlock energy in waste because they can burn plutonium, neptunium and other materials that Generation II and Generation III reactors leave behind. From Wordnik.com. [The New Nukes] Reference
In addition to U-238 used earlier, today's DU weapons contain plutonium (the most toxic of all known substances), neptunium, and the highly radioactive uranium isotope U-236. From Wordnik.com. [Omissions In the Iraq Study Group Report] Reference
Between those planets sits Neptune, and the gap between the two elements leaves a space for their relatively unsung cousin, neptunium – element number 93 in the periodic table. From Wordnik.com. [Archive 2010-01-01] Reference
The study found that in addition to U-238, today's DU weapons contain plutonium (the most toxic of all known substances), neptunium, and the highly radioactive uranium isotope U-236. From Wordnik.com. [The Threat of Depleted Uranium Exposure - It's Real, Deadly and Covered Up by the Pentagon and VA] Reference
This description is consistent with the claim that it is essential to neptunium that nuclei of neptunium atoms have 93 protons whereas it is essential to plutonium that its nuclei have 94 protons. From Wordnik.com. [Natural Kinds] Reference
Hahn and Prof. Meitner had also worked together on the discovery of an artificially active uranium isotope, which represents the basic substance of the elements neptunium and plutonium, first revealed later in America. From Wordnik.com. [Otto Hahn - Biography] Reference
General Atomics say that the MHR has a neutron spectrum is such and the TRISO fuel so stable that the reactor can be powered fully with separated transuranic wastes (neptunium, plutonium, americium and curium) from light water reactor used fuel. From Wordnik.com. [Small nuclear power reactors] Reference
In addition, the U.S. Department of Energy and the 1995 U.S. Army Environmental Policy Institute admits that a small amount of additional toxic heavy metals and radioactive isotopes are also present in Depleted Uranium, such as plutonium, neptunium, americium, Uranium-236 as well as Uranium-234 and Uranium-235. From Wordnik.com. [Depleted Uranium Poison Targets US Citizens] Reference
Over time, it's likely they'll multiply greatly, affect a greater number of our forces than those serving in the Gulf war because of longer and repeated deployments to the region and eventually cause an even greater number of serious illnesses and deaths because the DU weapons now used contain plutonium, neptunium and the highly radioactive uranium isotope U-236. From Wordnik.com. [Comments on Helen Caldicott's New Book Nuclear Power Is Not the Answer] Reference
And Ireta, a satellite of a suspected third generation sun, ought to be rich in the heavier elements, rich in the neptunium, plutonium and the more esoteric of the rare transuranics and actinites above uranium on the periodic table, so urgently and constantly required by the Federation of Sentient Populations the search for which was one of the primary tasks of the EEC. From Wordnik.com. [Dinosaur Planet]
For the outer planets, there are uranium, neptunium, and plutonium. From Wordnik.com. [VERBATIM: The Language Quarterly Vol XXIII No 4] Reference
All of the transuranic elements other than plutonium and neptunium are not. From Wordnik.com. [Libertarian Blog Place] Reference
The 5 percent stream would be plutonium, curium, neptunium, and americium to burn in the reactor. From Wordnik.com. Reference
These elements-a group that includes americium and neptunium-are known as non-fissile transuranics. From Wordnik.com. [U.S. News] Reference
The final group of waste products is a mixture of transuranic elements including plutonium and neptunium. From Wordnik.com. [PhysOrg.com - latest science and technology news stories] Reference
Documents outlining concerns have yet to be prepared, but they relate to neptunium operations at Hanford through spring 1972, said Shannon Bradford, spokeswoman for NIOSH. From Wordnik.com. [The News Tribune - Tacoma - - HOMEPAGE] Reference
We can safely assume that neptunium-fueled sand buggies on the Mars Base, circa 2109, will be equipped with these sirens; sadly, the lack of atmosphere on the Moon will preclude their use on vehicles there. From Wordnik.com. [Jalopnik] Reference
What is overhand, on the archival hotels in naples, is that it was inbuilt in a casuistic szechwan acromegalic the waxen iapetus to superposition the pennines of the sojourner for forgivably to deceitful neptunium. From Wordnik.com. [Rational Review] Reference
(July 22, 2008) - Physicists have gained new insight into the origins of superconductivity -- a property of metals where electrical resistance vanishes -- by studying exotic chemical compounds that contain neptunium. From Wordnik.com. Reference
Calling reprocessing technologies proliferation resistant if they merely sprinkle some uranium or neptunium in with separated plutonium makes about as much sense as calling a fattening meal healthy if one drinks diet soda along with it. From Wordnik.com. [Web Edition | Bulletin of the Atomic Scientists] Reference
More recently, there has been interest in transmuting the long-lived transuranic radionuclides (the actinides neptunium, americium and curium particularly) formed by neutron capture in a conventional reactor and reporting with the high-level waste. From Wordnik.com. [Featured Articles - Encyclopedia of Earth] Reference
He devised the Inductoslag melt-refining process for the effective separation and removal of radioactive contaminants uranium, plutonium, neptunium and technetium from engineering materials of construction, such as aluminum, copper, nickel, iron and steel. From Wordnik.com. [The Oak Ridger Home RSS] Reference
0.1% minor actinides (americium, curium, neptunium). From Wordnik.com. [Nuclear waste management] Reference
And nickel, neodymium, neptunium, germanium. From Wordnik.com. [Qulog 2.0] Reference
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