Determining the time interval in a radiation counting problem

Click For Summary

Homework Help Overview

The discussion revolves around a radiation counting problem involving the calculation of a time interval based on a given event rate and a probability function. Participants are exploring the relationship between the event rate and the integration of a probability equation.

Discussion Character

  • Exploratory, Mathematical reasoning, Assumption checking

Approaches and Questions Raised

  • Participants discuss the manipulation of a probability equation to isolate time, with some questioning the meaning of the variable t' and its significance compared to t. There is also mention of integrating the equation to derive a probability function over a specified time interval.

Discussion Status

The conversation is active, with participants seeking clarification on the integration process and the implications of the variables involved. Some have suggested choosing a suitable value for Δt in a programming context, while others are attempting to derive a relationship between the variables.

Contextual Notes

There is an indication that participants are working within the constraints of a programming environment and are considering how to sample time intervals based on the derived equations. The significance of the dummy variable t' is under discussion, with varying interpretations being explored.

SKT_90
Messages
13
Reaction score
0

Homework Statement


Given: Cn_dot = true event rate = 10 interactions/s
p(t')dt' = differential probability of an event

Homework Equations



p(t')dt' = Cn_dot * exp(-Cn_dot * t') dt'

The Attempt at a Solution


[/B]
I want to sample the time interval using python. But I'm not sure how to go about manipulating the formula to get t.

Should I integrate both sides from 0 to x and isolate for t? I'm not sure what to make of the LHS.
 
Physics news on Phys.org
What do you mean by "to get t"?
What do you want to do?
 
mfb said:
What do you mean by "to get t"?
What do you want to do?
I think if this is to be run through a program, then a suitable value for Δt should be chosen. Is that what you mean @SKT_90 ?
Also, what is the significance of t prime, vs just t?
It looks to me that if you integrate it from 0 to time T, you will have a probability function that it happens in T seconds.
 
scottdave said:
I think if this is to be run through a program, then a suitable value for Δt should be chosen. Is that what you mean @SKT_90 ?
Also, what is the significance of t prime, vs just t?
It looks to me that if you integrate it from 0 to time T, you will have a probability function that it happens in T seconds.

Hi scottdave,

Yes - this is what I mean to do. I think t' is just a dummy variable as stated in the question, so we can integrate it from 0 to t.
 
So i get :

1 - exp(-Cn_dot * t) = p(t)

I'm not sure how to sample the time from here?
 
nvm, figured it out
 

Similar threads

Replies
3
Views
2K
Replies
12
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 2 ·
Replies
2
Views
2K
  • · Replies 1 ·
Replies
1
Views
3K
Replies
1
Views
2K
  • · Replies 4 ·
Replies
4
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
Replies
3
Views
6K
  • · Replies 4 ·
Replies
4
Views
3K