Message: Try to get X ray production direction but angle seem to be wrong Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

Question Try to get X ray production direction but angle seem to be wrong 

Forum: Biasing and Scoring
Date: May 03, 15:02
From: HuangHong <HuangHong>

Dear all, I want simulate the electron bombard the target(tungsten)to produce X ray, I want to get the direction of X ray production.Details are described in the attachment.

I use the momentum to get the angle, codes likes blow:

G4ThreeVector direction = track->GetMomentumDirection(); G4double theta = direction.theta(); G4double phi = direction.phi();

Question 1: The result of theta is as follows(see attachment), we can see there is no X ray production in the 0 degree and 180 degree. Do I wrong to use the Momentum to get the X ray production direction?

Question 2: Where is the reference point for the MomentumDirection? Is it in relation to the interacting electron vector at the point of photon generation or something else entirely?

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/05/03/14.50-22901-n_of_X_ray_production.pdf

Inline Depth:
 1 1
 All All
Outline Depth:
 1 1
 2 2
 All All
Add message: (add)

1 Feedback: Re: Try to get X ray production direction but angle seem to be wrong   (Michael H. Kelsey - May 04, 12:31)
(_ None: Re: Try to get X ray production direction but angle seem to be wrong   (HuangHong - May 04, 17:25)
 Add Message Add Message
to: "Try to get X ray production direction but angle seem to be wrong"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews