Normalization of a pair distribution function

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SUMMARY

The discussion focuses on the normalization of a pair distribution function related to time to collision in simulations using Python. The user successfully calculated the radial distribution function (RDF) by determining distances between particle pairs and normalizing the histogram with respect to an ideal gas. However, they encounter difficulties in normalizing the time to collision distribution, as the methodology used by the referenced source remains unclear. The lack of specified units and the use of proportionality signs complicate the understanding of the results.

PREREQUISITES
  • Understanding of radial distribution function (RDF) calculations
  • Familiarity with Python programming for simulations
  • Knowledge of histogram normalization techniques
  • Concept of time to collision in particle simulations
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  • Research normalization techniques for time to collision distributions
  • Explore Python libraries for statistical analysis in simulations
  • Learn about ideal gas assumptions and their impact on distribution functions
  • Investigate the significance of units in physical simulations and data representation
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Researchers and practitioners in computational physics, simulation developers, and anyone involved in analyzing particle interactions and distributions in simulations.

Korbid
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Hi,

i'm performing a simulation about this potential http://motion.cs.umn.edu/PowerLaw/
I calculated the radial distribution function succesfully but i don't know how these guys are normalized the other pair distribution function, as a function of time to collision.

Could anyone help me?

Thanks!
 
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These guys do everything with the proportional to sign ##\propto##, and they use arbitrary units (or don't mention units at all), so that's going to be difficult. Could you specify what you did to calculate the radial distribution function succesfully and what you meant with that statement ? I, for one, have no idea what it means if g(r) = 5 at r = 0.5 m (fig 1, top).
 
BvU,
first thanks to answering me.

i'm performing the same simulation with Python programming language.
The radial distribution function has been determined by calculating the distance between all particle pairs and binning them into a histogram. The histogram is then normalized with respect to an ideal gas. For two dimensions, this normalization is the number density of the system multiplied by the area enclosed between two circles with radius determined by two consecutives bins.

My issue is about the other pair distribution function (time to collision).
I need to know how they are normalized the function because i calculated the time to collision and binning them into a histogram but my results are wrong.
 

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