doi:US5011584 AHerman P. GodfriedUSUS5011584 * Aug 31, 1989 Apr 30, 1991 Ultra-Centrifuge Nederland N.V. Method for separating a predetermined isotope of an element from a gaseous compound containing said element
6 The diagram represents an atom of an isotope X of an element.If the element consists of only two isotopes, which one of the following is likely to represent the particles of the other isotope of the element? B Proton Neutron Electron A565B555C655D111211 相关知识点: 试题来源: 解析...
For separating the isotopes of an element, a gaseous compound of this element is simultaneously irradiated by IR radiation of two different wavelengths for a time of less than 10<-5> seconds. In this case, the first radiation has a wavelength which corresponds to an absorption band of the ga...
If multiple isotopes of an element exist, fractionation is greatest between isotopes that have the largest atomic mass difference. 3. In unidirectional reactions, the lighter isotope becomes enriched in the endpoint. 4. In reactions that reach equilibrium, the lighter isotope is enriched in the reac...
elementsattemptsisotopesresearchesTHEelements81(thallium),82(lead),and83(bismuth)havebothradioactiveandinactiveisotopes,whereastheelements84–92areonlyknowninanactiveformSeveralattemptshavebeenmadetofindinactiveisotopesofthelatterelementsAston,usinghismassspectrograph,triedtodiscoverastableisotopeofradonintheatmosphere,...
Evaporation residues from fusion reactions induced by 160 MeV 32S on targets of 24,25,26Mg and 27Al were identified by means of a time-of-flight ΔE-E detector telescope. Angular distributions were measured in the range from 3° to 16° and total yields were determined as a function ...
The Isotope Geochemistry and Cosmochemistry of Magnesium Magnesium is second only to oxygen in abundance among the rock-forming elements and is an important element in the oceans and in hydrological and biologica... Edward,D.,Young,... - 《Reviews in Mineralogy & Geochemistry》 被引量: 384发表...
The foundations of stable isotope geochemistry were laid in 1947 by Urey’s classic paper on the thermodynamic properties of isotopic substances and by Nier’s development of the isotope ratio mass spectrometer (IRMS).This is a preview of subscription content, log in via an institution to check ...
We thank the staff of Wuhan Sample Solution Analytical Technology Co. Ltd, China for their technical support during the analyses of apatite trace element and Nd isotope, zircon U-Pb dating and Hf isotope, and whole-rock major and trace element. We also thank Editorial Advisor Prof. M. Santos...
(IBRAE) argued that “if the Mayak facility [were] the source, then we would have found concentrations hundreds of thousands of times the norm around it and in the soil10.” The IBRAE also set up an International Independent Scientific Commission for the investigation of the release of 106...