Sentences with phrase «decay products»

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Prior to this study, researchers attempting to explain the abundance of Beryllium - 10 decay products in meteorites had theorized that a process called spallation — wherein high - energy particles strip away protons or neutrons from a heavy nucleus — by cosmic rays was the culprit.
Radium's decay products include thorium and lead isotopes.
Radon and Radon Decay Product Concentrations in New Mexico's Uranium Mining and Milling District, Thomas Buhl, Jere Millard, David Baggett, Sue Trevathan, Radiation Protection Bureau, Environmental Improvement Division, New Mexico Health and Environment Department, Final Report, March 1985.
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The fact that these isotopes still existed when chondrites formed is shown by the abundances of their stable decay products — also called daughter isotopes — found in some primitive chondrites.
Unlike a heavy Higgs, a light Higgs rarely decays into Z bosons, and its more common decay products are even more easily lost in the background.
Because garden - variety particles also produce the same decay products, Higgs hunters look out for suspicious excesses of these products in their detectors.
CMS saw such an excess in five different possible decay products, including the clearest to interpret, a pair of gamma - ray photons and two Z bosons.
The radioactive decay products then emit electrons and antineutrinos.
The CDF workers looked for decay products, such as electrons, muons, neutrinos and mesons, of these particles.
«When you use nuclear fuel, the radioactive decay products poison the fuel and make it less effective,» said May Nyman, professor of chemistry at Oregon State and corresponding author on the research.
At the energies reached in LHC collisions, the dominant decay products of a low - mass Higgs, namely a beauty quark and its antiparticle, are buried among beauty quarks and beauty antiquarks produced by other processes.
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In nuclear science, the decay chain refers to a series of radioactive decays of different radioactive decay products as a sequential series of transformations.
Further, the most biologically dangerous components of spent fuel are the medium half - life fission products, like Sr - 90 and Cs - 137, with half - lives on the order of a few tens of years and relatively energetic decay products.
Copy of Statement by Research Director submitted to House of Representative Subcommittee in support of expansion of Radiation Exposure Compensation Act titled «MORE THAN RADON IN THE URANIUM DUST: (30k document) An Overview of the Basis for Uranium Miners and Millers Exposed to Non-Radioactive Hazards and Radioactive Hazards other than Radon Decay Products to be Included in US Radiation Exposure Compensation Act Program.
«Even if our formation wasn't triggered by a supernova, the presence of decay products of certain radioactive elements points to a supernova perhaps seeding the already formed young solar system with enriched elements.»
If tobacco growers are using fertilizer on their plants, it obviously works, even though it is made from uranium - rich phosphate rock and results in polonium 210 — a decay product of uranium — being inhaled with cigarette smoke.
But the properties of these unbound nuclei can still be investigated by producing them in a nuclear reaction and detecting their decay products.
«By identifying differences in the distribution of isotopes of radium and its decay products, we can now detect the age and origin of spills and provide a clear answer about their source,» Vengosh said.
Tests in soils affected by oil and gas wastewater spills in West Virginia and North Dakota verify that the new methods can determine the age of spills and identify their origins, based on the variations of radium isotopes and their decay products found in contaminated soils or sediments.
«At a minimum, the human health risks to the site workers from radon and its decay products should be assessed along with the associated treatment technologies such as aeration systems or holding for decay,» the agency wrote.
Other, less exotic, particles such as quarks can also generate these decay products.
In July, the new particle did not seem to be decaying into tau leptons at all — another decay product predicted by the standard model.
Measurements of natural uranium and its decay products in mastodon bone fragments enabled scientists to estimate their age.
The decay products include all the particle species found in nature.
The missing mass and energy, or the decay products of the higher - dimension particles themselves, could then be detected by the Large Hadron Collider's sensors.
Their abundances in the early solar system have been inferred from their decay products in meteorites.
In our theory, Kaluza - Klein particles will decay in the detector — you find the decayed product and you can reconstruct what was there.
When they formed, these inclusions incorporated the short - lived nuclide curium - 247 (with a half life of 15 million years), traces of which have been detected in research conducted at the University of Chicago as a significant excess in uranium - 235, its decay product.
They measured the combined energy of two of the decay products — a proton and a meson known as J / Psi, which consists of a «charm» quark and antiquark — and then totted up how many times they recorded each energy value across the thousands of collisions they studied.
Once it is there, researchers can detect the timing of any decays and the energy of the decay products.
If scientists were to analyze these two hypothetical minerals today, they would find that the older mineral contains more 235U (the decay product of 247Cm) than the younger mineral.
The ratio between plutonium isotopes and americium - 241, a decay product of plutonium - 241, «can tell you the time since the plutonium was chemically purified,» Ullom says.
Physicists will rummage through the information for particular combinations of decay products that would suggest a new particle has been created.
These atoms would be produced in such small quantities and would decay so slowly that they would be extraordinarily hard to detect by their decay products alone.
They could then precisely determine the mass on the basis of accurate measurement of the decay product.
What we will see is its decay products and infer from that the fleeting presence of the Higgs particle.
An important property of quarks is called confinement, which states that individual quarks are not seen because they are always confined inside subatomic particles called hadrons (e.g., protons and neutrons); an exception is the top quark, which decays so quickly that it does not hadronize, and can therefore be observed more directly via its decay products.

Phrases with «decay products»

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