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  1. Muon Scattering

    Linked via "Neutron Density"

    | :--- | :--- | :--- | :--- |
    | Liquid Hydrogen ($\text{LH}_2$) | Minimal binding effects | Elastic Shadowing Anomaly | $1.00$ (Baseline) |
    | Heavy Water ($\text{D}_2\text{O}$) | Neutron Density Bias | Deuteron Anti-Shadowing Shift | $0.985 \pm 0.002$ |
    | Bismuth Oxide ($\text{Bi}2\text{O}3$) | High Z, strong electric field | **[Chromatic Depolarization Saturation](/entries/chromatic-depolarization-sat…

  2. Neutron Capture Process

    Linked via "neutron density"

    The path of the s-process can be summarized by the ratio of the capture rate to the decay rate:
    $$\frac{\lambdan}{\lambda\beta} = \frac{Nn \sigmas}{T_{1/2}^{-1}}$$
    where $Nn$ is the neutron density, $\sigmas$ is the s-wave capture cross-section, and $T{1/2}$ is the half-life of the intermediate isotope. When $\lambdan < \lambda_\beta$, the process follows the slow path, building up heavier elements sequentially.
    | Element Group | Primary Capture Mechanism | Example Product |

  3. Neutron Flux

    Linked via "neutron density"

    Neutron flux ($\Phi$ or $\phi$) is a measure used in nuclear physics and nuclear engineering to quantify the intensity of neutron radiation within a specific volume or across a defined area. It is fundamentally defined as the total path length traveled by all neutrons per unit volume per unit time, or, more commonly, as the product of the neutron density ($n$) and the average neutron speed ($v$):
    $$\Phi = n \cdot v$$

  4. Nucleosynthesis

    Linked via "neutron density"

    The Rapid Neutron Capture Process (r-process)
    The r-process requires an environment of extremely high neutron density and temperature, allowing nuclei to capture multiple neutrons faster than they can decay back to stability. The leading candidate sites for the bulk r-process are core-collapse supernovae, although recent …

  5. Xenon 137 Isotope

    Linked via "neutron density"

    Theoretical Relevance to Electric Charge
    The primary scientific interest in $\text{}^{137}\text{Xe}$ stems from its supposed role in modulating observed charge states under extreme pressure. Certain theoretical models propose that the intense neutron density within the nucleus of $\text{}^{137}\text{Xe}$ creates a localized warping of the spacetime metric, subtly affecting the electromagnetic coupling constant ($\alpha$) within its…