These have included passive gamma ray spectrometry, passive and active neutron coincidence counting and neutron multiplicity measurements.

In contrast, a free neutron (which also decays through the weak interaction) lives about 15 minutes.

Toxic to many animals, heavy water is used in the nuclear reactor industry to moderate (slow down) neutrons.

(c) Photo neutron interrogation photo induced neutron emission occurs when the energy of an incoming photon (X ray or gamma ray) is above a certain threshold and atoms of low atomic weight undergo photonuclear reactions that emit neutrons.

If a neutrino had a brain, which it evolved in neutrino sized ancestors, it would say that rocks really do consist of empty space.

And you make if from lithium. That reaction at the bottom, that's lithium 6, plus a neutron, will give you more helium, plus tritium.

The mean logarithmic reduction of neutron energy per collision , formula_3, depends only on the atomic mass, formula_4, of the nucleus and is given by formula_5.

The only practical way to capture most of the fusion energy is to trap the neutrons inside a massive bottle of heavy material such as lead, uranium, or plutonium.

As an example, a representative alpha beryllium neutron source can be expected to produce approximately 30 neutrons for every one million alpha particles.

With the discovery of the neutron in the early 1930s, speculation arose in the scientific community that it might be possible to create elements heavier than uranium (atomic number 92) in the laboratory.

) Surrounded by a U 238 reflector tamper, the Fat Man's pit was brought close to critical mass by the neutron reflecting properties of the U 238.

Response of the international community

Such contributions had to ensure that assistance programmes responded fully to the needs of beneficiary countries.

Organizational response to the changing environment

II Response of the international community

In a neutron star the matter is in a state known as neutron degenerate matter, with a more exotic form of degenerate matter, QCD matter, possibly present in the core.

Sir James Chadwick, (20 October 1891 24 July 1974) was an English physicist who was awarded the 1935 Nobel Prize in Physics for his discovery of the neutron in 1932.

The African media s response to the massacres and rapes in Darfur has been equally muted.

WikiLeaks Flawed Answer to a Flawed World

Positive responses from national leaders

Positive responses from some religious authorities

International terrorism requires an international response.

This situation requires an urgent response.

Promoting private insurance may seem an indirect response to the tsunami disaster, but it is a rational and powerful response.

In response, China s government acted almost instantly.

The response from the communities is encouraging.

The present note is in response to that request.

The response of the international community was prompt and generous.

Information submitted in response to General Recommendation 17.

This is a timely initiative to give an integrated response to conflicts, a response in which the concept of peacebuilding complements the traditional idea of peacekeeping.

The international community s response to the massacres was shameful.

The present report is submitted in response to that request.

The present report is submitted pursuant to that request.

I have written to major partners of AU to urge them to fill the funding gap identified by AU.

This document was prepared pursuant to that request.

The present report is submitted in response to these two resolutions.

Immune tolerance or immunological tolerance describes a state of unresponsiveness of the immune system to substances or tissue that have the capacity to elicit an immune response.

In that connection, we are pleased to note that the response of the international community has also been unprecedented in terms of its swiftness and scale.

When the yield of a nuclear weapon is less than one kiloton, its lethal radius from blast, 700 m (2300 ft), is less than that from its neutron radiation.

But there was no response from the US government.

But these malignant cells seem to be particularly responsive to treatment.

Decides, in response to the request by the Secretary General, that

The report annexed hereto has been submitted in compliance with the request of the Committee.

However, INSTRAW has not been responsive to this suggestion.

The report annexed hereto has been submitted in compliance with the request of the Committee.