Are Muons and Tauons a Threat to Human Cells?

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Discussion Overview

The discussion centers on the potential dangers posed by muons and tauons to human cells, particularly in the context of their creation through cosmic rays and their interaction with the human body. Participants explore the implications of ionizing radiation from these particles and compare their risks to other sources of radiation.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant questions whether muons created in the atmosphere pose a danger to human cells if they reach the surface of the Earth.
  • Another participant clarifies that muons are produced when cosmic rays hit the atmosphere and notes that they, along with tauons, can be considered forms of ionizing radiation that have the potential to cause cellular damage.
  • A participant mentions that the muon flux at sea level is about 1 cm-2s-1, suggesting that cosmic ray muons are not particularly dangerous due to the low probability of interaction with human cells.
  • Another participant corrects the flux rate to 1/cm2/min and argues that while muons can induce mutations, they are not inherently dangerous as they are experienced by all living organisms regularly.
  • One participant raises a question about the relative contributions of ionizing radiation from muons compared to other sources like potassium-40 and radon, seeking to understand if muons are less dangerous than radon.
  • A later reply emphasizes the variability of radiation exposure based on environmental factors, suggesting that the danger from muons versus radon can differ depending on individual circumstances.

Areas of Agreement / Disagreement

Participants express differing views on the danger posed by muons and tauons, with some suggesting they are not particularly harmful while others raise concerns about their potential to cause damage. The discussion remains unresolved regarding the comparative risks of muons and other sources of ionizing radiation.

Contextual Notes

Participants note the dependence of radiation exposure on environmental factors, such as location and lifestyle, which complicates the assessment of risk from muons versus radon.

Antuanne
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Are muons created in the atmosphere of Earth through nucleosynthesis a danger. I am not asking how probable it would be for one to get down the the surface of Earth but if one did could they be a dangerous to human cells? And also, would tauons be a danger to the human system if they would happen to strike a human?
 
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"Nucelosynthesis" isn't the word you want--muons are created in the atmosphere when it's hit by cosmic rays.

Muons and taus with enough energy (such as those from cosmic rays) constitute ionizing radiation. Ionizing radiation is only dangerous when there's a lot of it: a single particle hitting you can only damage a few molecules, but you are made of a huge number of molecules. But in principle, muons and taus have the potential to cause the same damage as ionizing radiation from regular radioactivity.
 
There is a muon flux of about 1 cm-2 s-1 at sea level, so it would be fair to say that cosmic ray muons aren't particularly dangerous at this height as the probability of an interaction occurring would be quite low.
 
Vagn said:
There is a muon flux of about 1 cm-2 s-1 at sea level
The source says 1/cm^2/min, not second.
However, it shows that muons do hit the ground all the time. They can induce mutations, but I would not call them dangerous - they is something nearly every living thing on Earth experiences all the time.
Taus decay too quickly to reach humans, unless they are produced right in them (for whatever reason). They decay into other high-energetic particles, which can ionize things.
 
How much of ionizing radiation afflicting the genes of man comes from muons created by cosmic rays, how much comes from, say, potassium 40 in body, and how much comes from radon and radon daughters like polonium 210 in inhaled air?

Are muons less dangerous than radon?
 
@snorkack: See this article for an introduction. It is hard to answer questions which are so broad.
 
The thing about environmental sources of radiation is that they depend on the environment. If you live in a radon-free home Denver and have a job as an airplane pilot, you probably get more radiation from muons than radon. If you live in a basement in a radon-rich house at sea level, it's probably the other way around.
 

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