5.2.14. Photon- and muon-induced reaction models

Table 5.2.121 ipnint

Value

Explanation
(D=0)
Options for photo-nuclear reaction. [1]
=0
This reaction mechanism is not considered.
=1
This reaction mechanism is considered, except for nuclear resonance fluorescence.
=2
This reaction mechanism is considered, including nuclear resonance fluorescence.
(See notes below this table for polarization of incident photons.)
Table 5.2.122 pnimul

Value

Explanation
(D=1.0)
Multiplying factor to increase sampling probability of photo-nuclear reaction.
Table 5.2.123 imucap

Value

Explanation
(D=1)
Options for capture reactions of negative-muons considering characteristic X-ray production from muonic atoms and nuclear absorption.
=0
This reaction mechanism is not considered.
=1
This reaction mechanism is considered with default parameters used for calculation of characteristic X-ray production.
=2
This reaction mechanism is considered with user defined parameters written in file(28) used for calculation of characteristic X-ray production.
Table 5.2.124 iqmdscm

Value

Explanation
(D=0)
Option for Surface Coalescence Model [2] (SCM) in the calculation of capture reactions of negative-muons.
=0
Turn off SCM.
=1
Activate the SCM.
Table 5.2.125 scm_h0

Value

Explanation
(D=0.25)
Adjustable parameter of SCM, \(h0\) . [GeV fm/c]
Table 5.2.126 scm_d

Value

Explanation
(D=1.75)
Adjustable parameter of SCM, \(D\) . [fm]
Table 5.2.127 scm_rcls

Value

Explanation
(D=-1.124)
Adjustable parameter of SCM, \(Rcls\) [fm]. The adjustable parameter of SCM, \(R0\) [fm], is calculated as follows:
> 0
\(R0 = Rcls\)
< 0
\(R0 = \left|Rcls\right| * A^{-1/3}\)

For the nuclear resonance fluorescence considered in ipnint=2, polarization of incident photons can be specified using sx,sy,sz in the [source] section. The angular distribution of the scattered photons is determined with regard to the polarization.

Table 5.2.128 imuint

Value

Explanation
(D=1)
Options for muon-induced nuclear reaction based on the virtual photon theory.
=0
This reaction mechanism is not considered.
=1
This reaction mechanism is considered.
Table 5.2.129 imubrm

Value

Explanation
(D=1)
Options for muon-induced bremsstrahlung.
=0
This reaction mechanism is not considered.
=1
This reaction mechanism is considered.
Table 5.2.130 imuppd

Value

Explanation
(D=1)
Options for muon-induced electron-positron pair production.
=0
This reaction mechanism is not considered.
=1
This reaction mechanism is considered.
Table 5.2.131 emumin

Value

Explanation
(D=200.0)
Minimum energy of muon-induced nuclear reaction [MeV]. The change of emumin also changes the reaction cross sections over the entire energy range.
Table 5.2.132 emumax

Value

Explanation
(D=1.0e+6)
Maximum energy of muon-induced nuclear reaction [MeV].