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CALL GPHOT GPHOT simulates the photoelectric effect. It uses the following
input and output:
- Input
- via common GCTRAK
- Output
- via common GCKING
It calls the functions GPHSG1, GPHSGP, GAVRL2
and GAVRL3 for the cross-section and the functions GHPHAK,
GHPHAL1, GHPHAL2, GPHAL3 for the cosine distribution
of the photoelectron. GPHOT is called by the tracking routine
GTGAMA, if, and when, the photon reaches its interaction point.
GAVRL2VALUE = GAVRL2(GAMAL2,BETAL2,X)
GAVRL2 calculates approximation of the cross-section for the
photoelectric effect from
shell. GAMAL2,
BETAL2 are the Lorentz gamma and beta factors of the emitted
photoelectron and
where
is
the electron mass and
is the incident radiation energy.
GAVRL2 is called by GHPOT.
GAVRL3VALUE = GAVRL3(GAMAL3,BETAL3,X)
GAVRL3 calculates approximation of the cross-section for the
photoelectric effect from
shell.
GAMAL3, BETAL3 are the Lorentz gamma and beta factors of the
emitted photoelectron and
where
is the electron
mass and
is the incident radiation energy.
GAVRL3 is called by GPHOT.
GPHAKVALUE = GPHAK(BETAK)
GPHAL1VALUE = GPHAL1(BETAL1)
GPHAK and its entry point GPHAL1 poll the cosine distribution
(w.r.t. the incident photon direction) of the photoelectron emitted from
K or
shell, respectively. They are called by GPHOT.
GPHAL2VALUE = GPHAL2(BETAL2)
GPHAL2 polls the cosine distribution (w.r.t. the incident photon
direction) of the photoelectron emitted from
shell.
GPHAL3VALUE = GPHAL3(BETAL3)
GPHAL3 polls the cosine distribution (w.r.t. the incident photon
direction) of the photoelectron emitted from
shell.
It is called by GPHOT.
GPHSGPVALUE = GPHSGP(EGAM)
GPHSGP calculates the photoelectric effect total cross-section for
a particular atom of a mixture taking into account weights. It is called by
GPHOT for
.
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Up: PHYS231 Simulation of
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Janne Saarela
Mon Apr 3 12:46:29 METDST 1995