We have completed measurements of the total cross section, for neutrons between 2.5 and 15 MeV, of 78 natural elements and 14 artificial or isotopically enriched samples spanning the range from hydrogen to plutonium. The measurements wer... DG Foster,DW Glasgow - 《Phys.rev.c》 被引量: 149...
The radioactive decay of these produced radionuclides is specific for each element (nuclide). Each nuclide emits the characteristic gamma rays, measured using gamma spectroscopy, where gamma rays detected at particular energy indicate a specific radionuclide and determine concentrations of the elements...
Neutrons can interact with light elements such as hydrogen as well as heavy elements, making neutron diffraction essential for full structural analyses of newly discovered ice polymorphs. It is especially useful for detecting crystallographic symmetry breaking due to hydrogen ordering. This review will ...
Are there any elements in neutron stars, and if so what are they? How do you show the number of protons and neutrons on a Bohr-Rutherford diagram? If the elements of the periodic table were sequenced by density from smallest to largest, what would...
D.J. Bennet,Elements of nuclear power, Longman, New-York, USA, ISBN 0-582-30504-7, 1981, 232 pages. This book although quite general proposes some novel results. Google Scholar André Berthelot,Rayonnements des particules atomiques, électrons et photons[Radiation from atomic particles, electron...
Gamma-Ray Spectrometric Analysis of Elements in Normal Human Dentin The concentrations were studied by means of neutron irradiation of dentin samples for 20 hours in a flux of about 2 X 1012 neutrons X cm.-2 X sec.-'. After performing chemical group separation of the activated dentin, gamma...
These optical elements are solid composites consisting of regular stacks of alternating micro-foils analogous in action to Soller slits. They are made out of pairs of metals with suitable refractive indices for reflection and/or absorption of the radiation. The performance of these proof-in-...
a北京路与吉林路交叉处 Beijing road and Jilin road infall[translate] aa cluster of superheavy elements with a "magic number" of protons and neutrons that have half-lives of minutes or days 对superheavy元素群以“魔术到数字有的”的protones和中子半衰期您起草或几天[translate]...
A Neutron-Capture Theory of the Formation and Relative Abundance of the Elements There exists an inverse relationship between the relative abundance of nuclear species in the universe and the neutron-capture cross sections of these nucl... Alpher,A R. - 《Physical Review》 被引量: 60发表: ...
162... The same result may be attained by using the arrangement diagrammatically illustrated in FIG. 3, in which each cathode strip is of U-shaped cross section. For the sake of greater clarity, the elements illustrated in FIG. 3 and FIG. 1 bear the same reference numbers, with the add...