Questions tagged [radiation]
Radiation is a process in which energetic particles or energetic waves travel through a medium or space. The particles or waves radiate (i.e., travel outward in all directions) from a source.
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Any method for measuring hydroxyl and hydroperoxyl radicals in water?
I am looking to irradiate water containing some amounts of iron and would like to measure the amount of hydroperoxyl and hydroxyl radicals produced in real time as a result of the irradiation. Is ...
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Why don’t nuclear reactors burn through most of their fuel before discarding it?
The question: Why don’t nuclear reactors use more of the fuel, eg, 50%, 80%, before discarding it? It looks like there is plenty of energy left, and uranium is expensive. Also, there would be an ...
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Elevated Geiger Counter Radiation Reading for Envelope?
TL;DR: I'd like someone to run an experiment to prove that it is possible to induce a static electric charge on a plastic bubble mailer envelope (such as through rubbing with a plastic grocery bag or ...
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Is the Sommerfeld radiation condition equivalent to the requirement that the Poyting vector points outward?
In the context of classical electromagnetism with spatially bounded time-varying sources $J(x)$, the usual boundary condition that we impose at spatial infinity is the Sommerfeld radiation condition
$$...
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Decay chain diffferential equation
Consider I have a decay chain $A\rightarrow B \rightarrow C$. With decay constants $\lambda_{1}, \lambda_{2}$
If I would want to find an equation relating the number of nuclei B to the decay constants,...
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why are nuclear fallout shelters really necessary when radiation fades with distance so quickly? [closed]
why are nuclear fallout shelters really necessary when radiation fades with distance so quickly?
it diminishes with the inverse square law. I1xD1^2 = I2xD2^2. (Standard procedure is to measure ...
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Why does the color of a body only depend on absorptive power and not emissive power?
In the numerous explanations on nets and books, all give the reasoning as follow. If you see a red shirt, it's because that pen had a higher absorptive power for all colors except red, causing its ...
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How did Kurlbaum and others measure the intensity of each wavelength to get blackbody radiation curve?
In 1900 Plank was faced with data that didn't agree with the Plank-Wien law. This data that plots different temperature curves - wavelength on the horizontal and intensity on the vertical (or rather ...
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If we have a beam of photons and a beam of protons with the same energy, which one will get further inside the human body?
If we have a beam of photons (high energy X-ray) and a beam of protons both with the same energy, which one will get further inside the human body and why? Can this be explaind due to LET (Linear ...
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Can Alpha Decays and Gamma Decays be expressed via Feynman Diagrams?
I just learnt about Feynman Diagrams, and I've been going through many examples to practice the reading of Feynman Diagrams myself. I have already found diagrams for Positron Emission, Electron ...
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Help Understanding Spontaneous Alpha Decay [duplicate]
I've been reading through my Physics textbook (College Physics 2e on OpenStax) and I'm a bit confused by how it explains when alpha decay is spontaneous. Here is the quote for context:
When the final ...
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Derivation for Quantum optics dipole radiation formula
An often used formula for the radiation field of a dipole is the following one:
\begin{align}
\vec{E}(t, \vec{x}) = \frac{1}{4 \pi x^3} ( 3 \hat{x} [ \hat{x} \vec{d}(t_r)] - \vec{d}(t_r) ) + \frac{1}{...
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How to compute the magnetic vector potential in the radiation zone due to a charge density from Thomson scattering?
Context
In the course of studying Thomson scattering, I obtained a current density described by the equation
\begin{align}
\mathbf{j}(\mathbf{r},t)
=&
\frac{ e^2\,E_\text{inc}}{ m\,\omega}
\,
...
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$\rm NaI$ detector calibration with $\rm Cs$-137 and $\rm Co$-60 using Genie-2000 software [closed]
I have tried to calibrate the NaI detector with the NIM set, Cs-137, Co-60 radioactive sources and Genie 2000 software.
I used Cs-137 first and corrected the channel energy then used the Co-60, only ...
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Solid state X-ray detector response to environmental background & cosmic radiation
I would like to know what exactly is the "ticking" sound produced when using solid state Unfors Survey detector, i.e., when it is connected to its Xi Base unit and turned "ON" in ...
