element relative abundancelithiumprimary cosmic rays/ Be11B10B6Li7Lirelative abundancesStudies have been made to determine the relative abundances of the isotopes of Lithium, Beryllium and Boron in the primary cosmic rays in the low energy interval 180–400 MeV per nucleon recorded in the emulsion ...
7.Isotopes of californium 锎的同位素 8.abundance of isotopes 同位素的丰度;同位素丰度 9.separation of isotopes [核]同位素分离 10.stable isotope 稳定同位素用法例句 1. Such anomalies are due to the relative abundance of the "isotopes" or varieties of each element. 这种反常现象是由于同位素比较丰富或...
Although beryllium (Be) has 12 known isotopes, only one of these isotopes (9 Be) is stable and a primordial nuclide. As such, it is considered a monoisotopic element. It is also a mononuclidic element, because its other isotopes are short-lived that none are primordial and their abundance...
The element "lithium" has strong absorption lines near 6707.84 A and 3232.61 A and possesses specific isotope shifts at the respective absorption lines. With the aid of a laser capable of controlling the oscillation spectral width accurately to 0.01 A, the isotopes of this element are separated ...
Isotopes are variants of chemical elements: while all isotopes of a given element contain the same number of protons, they vary in the number of neutrons they contain. Variation in neutron number produces chemically identical atoms with different masses, which can be exploited to allow tracing of...
Krypton isotopes are isotopes of the element krypton that exhibit competition between different structures and shapes at low excitation energy, with a focus on the behavior around the neutron shell closure at N=56. AI generated definition based on: Progress in Particle and Nuclear Physics, 2007 Abo...
We present data on clay mineralogy, major element,... DC France-Lanord - 《Earth & Planetary Science Letters》 被引量: 570发表: 1996年 Lithium isotopic composition of submarine basalts: implications for the lithium cycle in the oceans We have measured the Li isotope composition of young, ...
1. Method for the separation of isotopes of an element, especially for the separation of the isotopes hydrogen/deuterium, lithium**6/lithium**7 and uranium**235/uranium**238, characterized in that the isotopes are separated by extraction with supercritical pure gases or with super-critical gas ...
(n = 20)32,33,34. The hard-rock deposits, mostly Li-rich granitic pegmatite, are interpreted as the product of fractional crystallisation from a parental granitic melt. Lithium is a major element in various minerals, such as amblygonite, bikitaite, eucryptite, lithiophilite, li...
of chemical structures and of reaction mechanisms. Generally the value of a tracer arises from the fact that, although its difference inmassor its radioactivity permits its detection, it is essentially active in the same way that the ordinary atoms of the element are. For most elements, a ...