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Fix radiative splitting ao #1011

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Fix radiative splitting ao #1011

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Commits on Aug 3, 2023

  1. Fix minor typo in comment 

     Changes to be committed:
	modified:   egs++/ausgab_objects/egs_fluence_scoring/egs_fluence_scoring.h
    @mainegra @ftessier
    mainegra authored and ftessier committed Aug 3, 2023
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  2. Add virtual methods for radiative splitting AO 

    - Added virtual methods setRussianRoulette and splitTopParticleIsotropically
  needed by the radiative splitting object.

 Changes to be committed:
	modified:   egs++/egs_application.h
    @mainegra @ftessier
    mainegra authored and ftessier committed Aug 3, 2023
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  3. Declare methods for radiative splitting AO 

    - Added two new methods needed by the radiative splitting object and
  provided more information in comments.

- Turn ON/OFF EGSnrc internal radiative splitting (UBS)
  void setRadiativeSplitting( const EGS_Float &nsplit );

- Turn ON/OFF EGSnrc internal Russian Roultette + UBS
  void setRussianRoulette( const EGS_Float &iSwitchRR );

- Split particle uniformly in 4Pi
  void splitTopParticleIsotropically( const EGS_Float &fsplit );

 Changes to be committed:
	modified:   egs++/egs_advanced_application.h
    @mainegra @ftessier
    mainegra authored and ftessier committed Aug 3, 2023
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  4. Define methods for radiative splitting AO 

    - Added two new methods needed by the radiative splitting object and
  provided more information in comments.

- Turn ON/OFF EGSnrc internal radiative splitting (UBS)
  void setRadiativeSplitting( const EGS_Float &nsplit );

- Turn ON/OFF EGSnrc internal Russian Roultette + UBS
  void setRussianRoulette( const EGS_Float &iSwitchRR );

- Split particle uniformly in 4Pi
  void splitTopParticleIsotropically( const EGS_Float &fsplit );

 Changes to be committed:
	modified:   egs++/egs_advanced_application.cpp
    @mainegra @ftessier
    mainegra authored and ftessier committed Aug 3, 2023
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  5. Implement radiative splitting + RR 

    Initial radiative splitting naively just turned ON EGSnrc internal
flag nbr_split to split brems and annihilation events uniformly.
However no charged particle RR was played after pair production (i_play_RR)
nor were secondary photons, produced by charged particles surviving RR after
bremsstrahlung, split.
--------------------
Radiative splitting:
--------------------
now turned ON before a bremsstrahlung event for a primary or a fat charged
particle. It is turned OFF after the brems event to avoid higher order
splitting. Fluorescent fat photons, generated by fat charged particles
(survived RR) are also split.

NOTE: Not done for annihilation yet! Coming up!

This time RR is turned ON using EGSnrc internal flag i_play_RR so that RR is
played after pair events. RR can be turned OFF by entering a negative splitting number.

NOTE2: Brems events play RR intrinsically hence it can't be turned OFF.
       Setting i_plpay_RR affects pair production ONLY.

 Changes to be committed:
	modified:   egs++/ausgab_objects/egs_radiative_splitting/egs_radiative_splitting.cpp
	modified:   egs++/ausgab_objects/egs_radiative_splitting/egs_radiative_splitting.h
    @mainegra @ftessier
    mainegra authored and ftessier committed Aug 3, 2023
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  6. Turn ON radiative splitting for annihilation 

    - Split annihilation in flight and at rest events for primary and fat positrons.
    @mainegra @ftessier
    mainegra authored and ftessier committed Aug 3, 2023
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