When neutron star core material is presumed to consist mostly of free neutrons, it is typically referred to as neutron-degenerate matter in scientific literature.

When an atom undergoes nuclear fission, a few neutrons ( the exact number depends on several factors ) are ejected from the reaction.

When the bomb detonated, the casing would contain the explosion long enough for mechanical shock to heat and compress the fusion fuel, and for fission neutrons to ignite nuclear fusion.

When fission neutrons break apart the lithium nuclei, some of the fragments are tritium nuclei, which participate in a very effective fusion reaction with the deuterium that is already present.

When adding nucleons ( protons or neutrons ) to a nucleus, there are certain points where the binding energy of the next nucleon is significantly less than the last one.

When the bomb explodes, the neutrons produced by the explosion would transmute the cobalt to the radioactive isotope cobalt-60 (< sup > 60 </ sup > Co ), which would be vaporized by the explosion.

When cosmic rays enter the atmosphere, they undergo various transformations, including the production of neutrons.

When a free neutron hits the nucleus of a fissile atom like uranium-235 ( < sup > 235 </ sup > U ), the uranium splits into two smaller atoms called fission fragments, plus more neutrons.

When purchased new a typical Cf-252 neutron sources emit between 1 × 10 < sup > 7 </ sup > to 1 × 10 < sup > 9 </ sup > neutrons per second but, with a half life of 2. 6 years, this neutron output rate drops to half of this original value in 2. 6 years.

When the nucleus of uranium-235 absorbs a neutron, it undergoes nuclear fission, splitting into two " fission products " and releasing energy and, on average, 2. 5 neutrons.

When a beam of neutrons emanating from a reactor is slowed down and selected properly by their speed, their wavelength lies near one angstrom ( 0. 1 nanometer ), the typical separation between atoms in a solid material.

When a nuclear reactor is operating its nuclear chain reaction generates many billions of free neutrons, and in the late 1940s NRX was the most intense neutron source in the world.

When a beam of neutrons is directed at a given material, the neutrons bounce off, or are scattered by, atoms in the sample being investigated.

When irradiated with high-energy neutrons, Li-6 creates tritium, which mixes with the deuterium in the same mixture and fuses at a relatively low temperature.

When nuclei are hit with such energy, neutrons are released, which scatter and collide with other nuclei.

When cosmic rays hit the surface of Mars, neutrons and gamma-rays come out of the soil.

When a uranium-235 ( U-235 ) atom undergoes nuclear fission, it typically releases 2 or 3 neutrons ( with the average being about 2. 4 ).

The average number of neutrons that cause new fission events is called the effective neutron multiplication factor, usually denoted by the symbols k-effective, k-eff or k. When k-effective is equal to 1, the assembly is called critical, if k-effective is less than 1 the assembly is said to be subcritical, and if k-effective is greater than 1 the assembly is called supercritical.

When the reactors were being built, the British, unlike the Americans and the Soviets, had little experience with the behaviour of graphite when it is exposed to neutrons.

# When these energetic neutrons strike a fissile nucleus, a much larger number of secondary neutrons are released by the fission ( e. g. 4. 6 vs 2. 9 for Pu-239 ).

When this type of bomb explodes, the fission of the highly enriched uranium or plutonium core creates neutrons, some of which escape and strike atoms of lithium-6, creating tritium.

When these fast neutrons collide with hydrogen nuclei present in the soil being studied, they lose much of their energy.

When I show up he will know you are a good wife to have told him about it ''.

When the Know-nothings get control, it will read, All men are created equal except Negroes and foreigners and Catholics.

When the reactionary response is thus bolstered by an intellectual defense, the characteristics of that defense are explicable only in terms of the basic attitudes of unanalyzed reaction.

When combined with the metaphysical notion that pure forms of this universe are best appreciated when least embodied in a material substratum, it becomes clear that while earth will be dross on a scale of material-formal ratios, celestial bodies will be of a subtle, quickened, ethereal existence, in whose embodiment pure form will be the dominant component and matter will be absent or remain subsidiary.

She used to tell me, `` When I stand there and look at the flag blowing this way and that way, I have the wonderful, safe feeling that Americans are protected no matter which way the wind blows ''.

When we consider the disorganized state of the world community, and the legacy of predispositions adversely directed against all who are identified as Jews, it is obvious that the struggle for the minds and muscles of men needs to be prosecuted with increasing vigor and skill.

When these fields are surveyed together, important patterns of relationship emerge indicating a vast community of reciprocal influence, a continuity of thought and expression including many traditions, primarily literary, religious, and philosophical, but frequently including contact with the fine arts and even, to some extent, with science.

When different colors are used, she is just as likely to color trees purple, hair green, etc..

When finally the two bedraggled men reach their friend's home, Voltaire's fears are once again aroused.

`` When are you to leave ''??

When the roof blocks are all in place, the final rows of wall blocks are mortared into position.

When the aid operations are reorganized the Peace Corps should remain a semi-autonomous, functional unit.

When the budget goes to trustees for approval it is the president's budget, to which his faith and credit are committed ; ;

When they have 4 to 6 leaves and are thrifty little plants, it's time to set them out where they are to remain.

When aircraft are no longer helpless on airfields, they are no longer vulnerable to Aj.

When more than two figures are separated by subtraction symbols the subtraction must be carried out from the left to right if the result is to be correct.

When they're on, the top edges are planed even with the sheer batten.

When painting, Mason's physical eyes are half-closed, while his mind's eye is wide open, and this circumstance accounts in part for the impression he wishes to convey.

When improvements are recommended in working conditions -- such as lighting, rest rooms, eating facilities, air-conditioning -- do you try to set a measure of their effectiveness on productivity??

When sufficiently accurate and complete measurements are available, it will be possible to set limits on the thermal and electrical characteristics of the surface and subsurface materials of the moon.

When some thirteen records of newly and recently born individuals are collated, little or no correlation between length and distribution can be detected.

When three dice are tossed repeatedly, what is the probability that the number of aces is 0 ( or 1, or 2, or 3 )??