Sentences with phrase «radioactive particles in»

Taking samples of such speleothems from six caves, the researchers then reconstructed the last roughly 500,000 years of climate via the decay of radioactive particles in the stone.

Led by Ken Buesseler, a senior scientist and marine chemist at the Woods Hole Oceanographic Institution (WHOI), the team found that a small fraction of contaminated seafloor sediments off Fukushima are moved offshore by typhoons that resuspend radioactive particles in the water, which then travel laterally with southeasterly currents into the Pacific Ocean.

Not exact matches

Four days after the accident, the radioactive particles were already in Africa and China.

These particles are one of the most pervasive forms of matter in the Universe: they are created in the Sun and in supernovas, by cosmic rays crashing into the upper atmosphere, and they are even made on Earth, streaming out from nuclear reactors and radioactive rocks.

The fire, whatever kind it was, appears to have carried radioactive particles into the surrounding countryside to the northwest as it coincided in time with the wind blowing in that direction.

Mysterious seasonal wobbles in the rate of radioactive decay may be caused by elusive particles from the sun

Uranium and other radioactive materials, such as caesium and technetium, have been found in tiny particles released from the damaged Fukushima Daiichi nuclear reactors.

The EPR authors described a source, such as a radioactive nucleus, that shot out pairs of particles with the same speed but in opposite directions.

When it hardens, it shrinks by about 20 percent, sucking up fine radioactive particles and encapsulating them in its folds.

Some of those particles have a particularly useful set of properties: They don't naturally occur in the rocks, and they are radioactive.

(Reuters)- Managers mishandled a radiation leak at a New Mexico nuclear waste dump in which 21 workers were exposed to airborne radioactive particles due in part to substandard equipment and safety systems, a U.S. investigator said on Wednesday.

Cell phones use non-ionizing radiation, which differs from the ionizing radiation of x-rays and radioactive material in that it does not have enough energy to knock around — or ionize — electrons or particles in atoms.

At the US government's Los Alamos National Laboratory in New Mexico, researchers are generating neutrons with a particle accelerator and using them to transmute long - lived radioactive elements.

But, unlike the 150 particles found on the foreshore next to Dounreay over the past 18 years, the 20 latest particles did not originate from the explosion in 1977 which blew the lid off a waste shaft, spewing its radioactive contents around the site.

Then I remembered seeing a science experiment at my high school in Elsinore, in which our teacher showed us what is called a cloud chamber, and seeing tracks of radioactive particles, which look like small droplets.

Paul Schaffer, associate laboratory director of the life sciences division of Canada's particle physics laboratory TRIUMF (TRI-University Meson Facility), which uses particle accelerators to create radioactive materials for medicine, explains in a public lecture that will be broadcast live here on this webpage Wednesday, December 2 at 7 P.M. Eastern time.

Baxter suggested that the particles fell onto the roadside during the 1960s and early 1970s when radioactive material was being carried in trailers to the waste shaft.

But fish and seaweed could concentrate radioactive particles to levels higher than those in the surrounding waters, so monitoring will be crucial to assess the impact on marine life.

Deep underground, uranium atoms in rocks undergo radioactive decay, sending off alpha particles — two protons and two neutrons — that can bump into other molecules and change them.

Curium was only discovered in 1944, by Glenn Seaborg and his collaborators at the University of California, Berkeley, who, by bombarding atoms of plutonium with alpha particles (atoms of helium) synthesized a new, very radioactive element.

Nuclear bomb tests in the 1950s and»60s blasted radioactive particles into the atmosphere.

The difference between this accident and Chernobyl, they say, is that at Chernobyl a huge fire released large amounts of many radioactive materials, including fuel particles, in smoke.

To whip up a batch of ununoctium, a team of Russian and American nuclear physicists shot calcium atoms (element 20) at a target of radioactive californium (element 98) in a particle accelerator at the Joint Institute for Nuclear Research in Dubna, Russia.

And that means there may be two direct paths for radioactive particle byproducts of nuclear fission, such as cesium 137 and iodine 131, to escape and spread radiation — cracks in containment as well as the spent fuel pools now open to the air.

Wheeler likes to use the example of a high - energy particle released by a radioactive element like radium in Earth's crust.

MIT physicists have developed a new tabletop particle detector that is able to identify single electrons in a radioactive gas.

In a radioactive metamorphosis called single beta decay, a neutron (a neutral particle) in the nucleus of an unstable atom spontaneously turns into a proton (a positive particle) and emits an electron and an antineutrino — the antimatter twin of a neutrinIn a radioactive metamorphosis called single beta decay, a neutron (a neutral particle) in the nucleus of an unstable atom spontaneously turns into a proton (a positive particle) and emits an electron and an antineutrino — the antimatter twin of a neutrinin the nucleus of an unstable atom spontaneously turns into a proton (a positive particle) and emits an electron and an antineutrino — the antimatter twin of a neutrino.

This happened in 1986 when a nuclear power plant at Chernobyl caught fire and exploded, showering surrounding territory with radioactive particles and threatening to let molten uranium fuel seep deep into the ground.

The estimate of 11,000 fatal cancers also does not include internal radiation exposure caused by the breathing in or swallowing of radioactive particles.

These electrically neutral subatomic particles are made in stars and nuclear reactors as a byproduct of radioactive decay processes.

In the sensor, the groundwater is passed over a packed bed of beads or particles, which capture the radioactive species of interest.

Right out of the international news, forest fires near the Chernobyl nuclear wreck in Ukraine have raised dangerous radioactive particles into the atmosphere — again.

It binds to radioactive particles flushing them out of the body and is very effective in detoxifying our organism from mercury, which is very important as most of us might be contaminated with mercury through dental fillings, vaccination, or fish consumption.

Hidden beliefs So we want to know what is the change in isotopes over time due to the emission of radioactive particles.

Radon is one link in the decay process which emits radioactive radiation in the form of an alpha particle.

It's been 30 years since the 1986 nuclear disaster in Ukraine in which a fire and explosion at the Chernobyl Nuclear Power Plant unleashed a slew of radioactive particles into the atmosphere.

The scientists brought their 1.55 metre cores to the surface in 1993, but it has taken another two decades for laboratory techniques to detect and interpret the significance of radioactive particle samples in the rock that could only have come from outer space — which is why scientists think the bedrock must have been exposed, possibly more than once.

Dane: I just now (4-14-16) heard you discuss climate engineering and the synergistic complexities which flare into existence when combined with Fukushima Radiation in both the air and the Pacific — and other radioactive particles from who knows where (Iraq war DU,left - over above ground atomic explosions, millions of tons of nuke waste just dumped into the oceans since 1945)?

«Radon gas decays into radioactive particles that can get trapped in your lungs when you breathe,» according to the U.S. Environmental Protection Agency (EPA).