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How is the neutron yield of an AmBe neutron source facility increased?
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∙ 11y ago
Fission
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∙ 11y ago
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What is meant by supercritical andhow dose it relate to making a nuclear bomb?
subcritical - a mass or arrangement of fissionable or fissile material unable to sustain a neutron chain reaction. It can provide a fixed amount of neutron multiplication from a neutron source, but after removal of the neutron source the chain reaction rate drops exponentially.critical - a mass or arrangement of fissionable or fissile material capable of sustaining a constant neutron chain reaction. No increase or decrease. (Nuclear reactors operate at critical)supercritical - a mass or arrangement of fissionable or fissile material capable of not only sustaining a neutron chain reaction, but once initiated the chain reaction rate rises exponentially. (Nuclear fission bombs explode when made supercritical)A nuclear fission bomb must have 2 of these states: subcritical (so that it can't explode until desired) and supercritical (so that it explodes with an effective yield). This requires a rapid "assembly" system using conventional explosives to rearrange the fissile material from subcritical to supercritical in about 1ms. A neutron source starts the chain reaction and the explosion completes in about 1 microsecond.
Is a neutron bomb the most dangerous nuclear weapon?
no, yield is rather low because tungsten is used for fusion tamper instead of Uranium-238, so the fusion neutrons can escape instead of being consumed fissioning Uranium-238.
What relationship s used to determine the percent yield of a chemical reaction?
The percent yield of a reaction measures the efficiency of a reaction. The relationship of the actual yield to the theoretical yield is used to determine this.
What is the yield for a gallon of product that has a ratio of 128?
The yield for a gallon of product that has a ratio of 1:128?
Why cant a nuclear power plant explode like a nuclear bomb?
A fission bomb explodes because of a sudden assembly (driven by conventional explosives) of a very supercritical mass of fissile material, followed by a precisely timed neutron pulse at the optimal point of supercriticality.A fission reactor cannot do this, for the following reasons:most fission reactors do not contain fissile material, only fissionable materiala fission reactor has no mechanism for sudden assemblyof a very supercritical massfission reactors operate exactly at critical, so the reaction neither dies out nor risesfission reactors use a continuous neutron source at startup that is removed once the reactor is running, not a precisely timed pulsed neutron source like used in fission bombsif a fission reactor using fissile material did go supercritical enough (without the automatic SCRAM system shutting it down first) to get a small nuclear yield, it would be a fizzle yield only capable of melting the core and thereby instantly dissembling the supercritical massDefinitions:Fissionable material - material capable of sustaining fission, but only in presence of a moderator to slow neutrons to prevent their capture by Uranium-238 or other isotopes with large capture crosssections for fast neutronsFissile material - weapons grade material requiring no moderator and capable of fast fission. required for both bombs and fast breeder reactors.
How can the yield of ammonia be increased?
in the haber process its yield is increased by increasing presure
What happens to the yield of ammonia when the concentration of reactant is increased?
..
A test specimen is stressed beyond the yield point and is then unloaded its yield point will be?
increased...because the specimen is strain hardened due to plastic deformation.
How do plants maximize yield?
Plants maximize their yield by improving harvest index
How can nuclear fission be forced to happen?
by a neutron source. nuclear reactors are always started with one to avoid a supercritical power surge from damaging the reactor. nuclear bombs are always triggered by one to make sure the reaction happens at optimal supercriticality for desired yield.
What is meant by supercritical andhow dose it relate to making a nuclear bomb?
subcritical - a mass or arrangement of fissionable or fissile material unable to sustain a neutron chain reaction. It can provide a fixed amount of neutron multiplication from a neutron source, but after removal of the neutron source the chain reaction rate drops exponentially.critical - a mass or arrangement of fissionable or fissile material capable of sustaining a constant neutron chain reaction. No increase or decrease. (Nuclear reactors operate at critical)supercritical - a mass or arrangement of fissionable or fissile material capable of not only sustaining a neutron chain reaction, but once initiated the chain reaction rate rises exponentially. (Nuclear fission bombs explode when made supercritical)A nuclear fission bomb must have 2 of these states: subcritical (so that it can't explode until desired) and supercritical (so that it explodes with an effective yield). This requires a rapid "assembly" system using conventional explosives to rearrange the fissile material from subcritical to supercritical in about 1ms. A neutron source starts the chain reaction and the explosion completes in about 1 microsecond.
What is bps in economics?
BPS = basis point. Definition: A unit for measuring a bonds yield that is equal to 1/100 of 1% of yield. Also known as "bips". Same as 1/10,000 of yield (1% divided by 100). For example, if a bond goes from 5.0% yield to 5.5% yield it is said to have increased 50 bps / 50 basis points
How were some of the hunger needs of India solved?
increased per acre yield due to better farming,improved plant genetics and crop management,and increased meat supply.
Why are younger plants the best source for DNA?
The younger the plant tissue, the higher the DNA yield
What is a dial-a-yield nuclear bomb - fission or fusion?
"Dial-a-yield," or Variable Yield, is a method of adjusting the yield of a nuclear weapon through various means. While most modern high-energy weapons are thermonuclear, both fission and thermonuclear weapons can have their yield adjusted. In a boosted fission weapon (which can also be the primary to a staged radiation implosion weapon), the yield can be adjusted by changing the amount of deuterium/tritium gas that is injected into the plutonium pit, or by the timing of the external neutron initiator, or both. In a staged weapon, causing the secondary to not ignite by adjusting the yield of the primary (see above), or blocking the radiation channel in some way, can also change the yield of the weapon.
How would the yield of ethanol at equilibrium change if the temperature was increased?
If you raise the temperature, the endothermic reaction will increase to use up the extra heat, therefore producing less percentage yield of ethanol and more of ethene and steam.
How has the atomic bomb evolved over time?
They have been reduced in physical size, increased in yield, made more durable and secure.
