Shock waves in crystals - temperature effect

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Discussion Overview

The discussion revolves around the estimation of temperature rise in covalent crystals induced by shock waves from ultrashort laser pulses, particularly at pressures in the range of tens of GPa. Participants explore the relationship between pressure and temperature in the context of shock wave physics, while addressing the background knowledge required for such experiments.

Discussion Character

  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant inquires about estimating temperature rise related to pressure in covalent crystals when inducing shock waves with ultrashort laser pulses.
  • Another participant questions the appropriateness of the inquiry given the lack of knowledge about shock waves, suggesting a need for foundational understanding before conducting such experiments.
  • A response challenges the initial criticism, emphasizing the validity of the question and the importance of understanding shock wave diagnostics, while also questioning the experimental goals.
  • There is mention of the possibility to calculate temperature if proper diagnostics are available, but it is unclear what specific measurements or equipment are necessary.
  • Concerns are raised about relying on non-technical sources, such as Wikipedia, for designing experiments in shock physics.

Areas of Agreement / Disagreement

Participants express disagreement regarding the appropriateness of the initial inquiry and the level of knowledge required for conducting experiments. There is no consensus on the best approach to estimating temperature rise in relation to pressure in this context.

Contextual Notes

Participants highlight the need for proper diagnostics and foundational knowledge in shock wave physics, but specifics on the calculations or methodologies remain unresolved.

Who May Find This Useful

This discussion may be of interest to researchers or students in the fields of shock physics, materials science, and experimental physics, particularly those exploring the effects of shock waves on materials.

johng23
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If you induce a shock wave in a covalent crystal using an ultrashort laser pulse, is there any way to estimate the temperature rise in relation to the pressure? Say I want to induce pressures of 10's of GPa. Is there a general way to think of this problem? I know next to nothing about shock waves.
Thanks.
 
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If you know next to nothing about shock waves, what business do you have in shocking a material with an ultrashort laser pulse?
 
Last edited:
If you're not going to provide any information, what business do you have posting in the thread?

But hey, if you really need an outlet to be condescending, go right ahead.

Anyway, I'll have you know that I wasn't intending to start inducing shocks in my lab's photodetector until I'd at LEAST read the wikipedia article.
 
johng23 said:
If you're not going to provide any information, what business do you have posting in the thread?

But hey, if you really need an outlet to be condescending, go right ahead.

Look, I work in the field of shock physics diagnostics, so I have at least a gross concept of what you're trying to do. Quit getting defensive over a valid question.

What is it you're trying to accomplish in these experiments? It is possible to calculate the temperature given the proper diagnostics, but do you have a concept of how fast the shock is going to be and what kind of equipment you're going to use to measure the shock?

johng23 said:
Anyway, I'll have you know that I wasn't intending to start inducing shocks in my lab's photodetector until I'd at LEAST read the wikipedia article.

So, you're going to design a shock physics experiment based on a (non existent) shock physics article on Wikipedia? You'd better get a proper textbook on the subject first.
 

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