| 1. | Where b _ k is the scattering length of the point k.
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| 2. | That is, the correlation function is weighted by the scattering length.
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| 3. | The excess scattering length density is also called the contrast.
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| 4. | The scattering length may be either positive or negative.
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| 5. | Based on these foundations, he compiled authoritative tables of neutron scattering lengths.
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| 6. | The scattering length varies from isotope to isotope rather than linearly with the atomic number.
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| 7. | In contrast, the neutron scattering lengths of most atoms are approximately equal in magnitude.
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| 8. | The coupling constant, g, is proportional to the scattering length a _ s of two interacting bosons:
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| 9. | Neutron scattering lengths vary erratically between neighbouring elements in the periodic table and between isotopes of the same element.
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| 10. | For X-ray scattering, the scattering length b is directly proportional to the electron density \ rho _ e.
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