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G4SmpIsoDir.cc
Go to the documentation of this file.
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//
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//
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// This software was developed by Lawrence Livermore National Laboratory.
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//
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// Copyright (c) 2006 The Regents of the University of California.
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// All rights reserved.
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// UCRL-CODE-224807
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//
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//
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// $Id: G4SmpIsoDir.cc 67966 2013-03-13 09:38:38Z gcosmo $
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//
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#include <cmath>
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#include "
G4fissionEvent.hh
"
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#include "
G4PhysicalConstants.hh
"
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void
G4fissionEvent::G4SmpIsoDir
(
G4double
* cosdiru,
G4double
* cosdirv,
G4double
* cosdirw) {
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/*
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Description
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determine the 3 direction cosines of a particle emitted isotropically
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*/
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/*
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Input
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Output
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- 3 components of the direction cosines
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(cosdiru, cosdirv, cosdirw)
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*/
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G4double
cospolang, sinpolang, phi;
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/*
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Choose emission angle isotropically.
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Select a polar angle direction cosine.
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*/
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cospolang = 1.-2.*
fisslibrng
();
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sinpolang = std::sqrt(1.-std::pow(cospolang, 2.));
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/*
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Select an azimuthal angle uniformly on (0,2*pi)
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*/
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phi = twopi*
fisslibrng
();
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*cosdiru = sinpolang * std::cos(phi);
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*cosdirv = sinpolang * std::sin(phi);
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*cosdirw = cospolang;
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}
G4fissionEvent.hh
G4fissionEvent::fisslibrng
static G4double fisslibrng(void)
Definition:
G4rngc.cc:65
G4PhysicalConstants.hh
G4fissionEvent::G4SmpIsoDir
void G4SmpIsoDir(G4double *cosdiru, G4double *cosdirv, G4double *cosdirw)
Definition:
G4SmpIsoDir.cc:63
G4double
double G4double
Definition:
G4Types.hh:76
geant4.10.00.p02
source
processes
hadronic
models
fission
src
G4SmpIsoDir.cc
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