Tritium的意思|Tritium的解释-里氏词典

tritium ['tritiәm]

n. 氚

[化] 氚

[医] 氚(音川)

tritium

[ noun ]
a radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms
<noun.substance>

tritium \trit"i*um\ (tr[i^]t"[i^]*[u^]m), n. (Chem.)
A radioactive isotope of hydrogen having one proton and two
neutrons in the nucleus. It decays spontaneously to Helium-3
by the emission of an electron (beta ray), with a half-life
of 12.3 years. Symbol 1H3. Atomic weight 3.01605 (C-12 =
12.0000). It is one of the radioisotopes commonly used to
label chemical compounds for use as tracers in biochemistry
and chemistry. It is also used as one of the fusionable
components of a hydrogen bomb.
[PJC]

Experts say tritium gas can be used to enhance the effectiveness of an atomic bomb.
The accident occurred when a quartz window in a bell jar containing tritium shattered.
He disputed their claims that their device produced excess heat, or that it yielded byproducts of fusion, including helium, tritium, neutrons and gamma rays.
He said that within the past few days, he's gotten evidence that there is a "weak correlation" between the time the heat bursts occur and the production of tritium.
The production and supply of nuclear weapons materials is classified, but Ruff said the study found the N Reactor could meet tritium production needs.
However, a Department of Energy study released this week said the N Reactor could be converted to make tritium within three years for $125 million.
It is believed the three reactors at Savannah River had been concentrating on tritium.
Ironically, the secret test was done as part of an internal investigation into troubling discrepancies in the amount of tritium shipped from the Oak Ridge National Laboratory at Oak Ridge, Tenn., to commercial buyers in recent years.
For most of its nearly four decades of operation, the Savannah River plant has been one of the most secretive sites in the nation. It contains three reactors that produce tritium, a gas needed in the production of nuclear warheads.
The department's production of tritium is currently shut down because of safety and management problems with the nuclear reactors used to produce it at the Savannah River Site in South Carolina.
The plant, in fact, had an equipment failure only yesterday, which led to the release of a small amount of tritium gas.
For reasons not yet publicly explained, three-quarters of the tritium was lost in the round trip.
`It should not take as long as five years, however, to determine whether the START and other arms-reduction negotiations are likely to produce cuts sufficient to permit continued suspension of tritium production," the scientists said.
But he said further testing revealed that those levels may have been the result of the workers' regular handling of tritium.
Many private groups that monitor the government weapons program have expressed doubt that tritium supplies are as tight as suggested by the Energy Department.
Tests near the Tatum dome show tritium levels are increasing in overflow ponds when they should be decreasing, he said.
Three nuclear reactors at the Savannah River Site in South Carolina, which are the nation's only source of tritium needed for nuclear warheads, have been shut down for more than a year because of uncertainties about their safety.
Establishing safety requirements or standards that may be needed for completing WNP-1 as a tritium production reactor rather than a commercial power facility.
In a move that could further delay the production of a scarce gas needed for nuclear warheads, Energy Secretary James D. Watkins on Wednesday ordered additional testing of the government's tritium reactors before they are restarted.
The Oak Ridge researchers also found what seemed to be excess levels of neutrons and tritium, but not consistently.
The incident is the latest in a series of technical problems that have arisen at Savannah River, the site of three U.S. Energy Department nuclear reactors that produce tritium, a radioactive gas needed to make most nuclear weapons.
Workers at the plant, the nation's only producer of weapons-grade plutonium and tritium, were not evacuated.
Officials say the amount of tritium on hand and the date by which they must resume production are classified.
In the meantime, a team of department specialists is pressing an investigation of missing amounts of tritium shipped from the Oak Ridge National Laboratory in Tennessee to two British companies, said Phil Keif, a DOE spokesman.
Richard Neff, manager of environmental health and safety at the Mound Nuclear Production Plant, called the release of tritium minor but said it was the largest such release at the southwestern Ohio plant since the 1960s.
Spokesman Jim Felder said about 20,000 curies of tritium, a radioactive isotope of hydrogen, were released at 6:18 a.m. this morning during routine operations.
Officials at the Defense and Energy Departments said that for security reasons they could not specify the exact amount of tritium that the government has and needs, or when a shortage would become critical.
One alternative to these sites is the Hanford Nuclear Reservation near Richland, Wash., where the Washington Public Power Supply System's No. 1 plant could be converted to tritium production.
The system has been crippled recently by safety and technical problems that forced the shutdown of the only reactors that make tritium, a radioactive gas vital to the production of nuclear warheads.
The Savannah River site at Aiken, S.C., would exclusively produce one nuclear-weapons component, tritium; in earlier years, some of its four reactors also produced plutonium.

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