Using radioactive elements trapped in crystallized, cream - colored «veins» in New Mexican rock, geologists have peered back in time more than 400,000 years to illuminate a record of earthquakes along the Loma Blanca fault in the Rio Grande rift.
Not exact matches
And in a chapter on the
radioactive elements carried in nuclear fallout, there's Pig 311, a sow that survived a nuclear test blast only to be
used as propaganda for the weapons» supposed safety.
Lawrence's brother, John, a doctor at Yale,
used one of the
elements from his brother's cyclotron,
radioactive phosphorus, to examine metabolism in mice.
Their fundamental discoveries may aid research into the management of nuclear waste, by helping scientists understand how chemicals can be
used to separate the most
radioactive elements.
Manchester scientists have revealed how arsenic molecules might be
used to «fish out» the most toxic
elements from
radioactive nuclear waste — a breakthrough that could make the decommissioning industry even safer and more effective.
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.
Wheeler likes to
use the example of a high - energy particle released by a
radioactive element like radium in Earth's crust.
Williams looked at the
radioactive elements uranium and thorium trapped in these calcite crystals,
using them as a kind of clock based on the rate at which uranium decays into thorium.
The unstable
element, which will remain
radioactive for millennia, is the residue of ill - fated efforts to recycle
used nuclear fuel.
Their discovery could aid in the synthesis of new «radiotracers» — chemical compounds that contain a
radioactive form, or isotope, of an
element — for
use with a noninvasive, high - resolution 3 - D medical imaging technology known as PET (positron emission tomography) scanning.
The team dated the water
using the
radioactive decay of
elements in the rocks to inert gases.
Geochronologists often
use known rates of
radioactive decay of
elements in rocks to determine the age of the rock.
The current methods for separating and identifying actinides, a series of
radioactive elements used in nuclear weapons and power applications, can take days or even weeks to complete.
The original
element is called the parent, and the Archaeologists
use the exponential,
radioactive decay of carbon 14 to estimate the death dates of organic material.
-- The Administrator of the Environmental Protection Agency shall establish generally applicable environmental standards for the protection of the public and the general environment from
radioactive material released from facilities that
use an advanced fuel recycling process, including facilities to fabricate fuel enriched with actinide
elements other than uranium.