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Forum: Hadronic Processes
Re: Question Ag110m creation and decay (Sergio Lo Meo)
Re: None Re: Ag110m creation and decay (michel maire)
Re: Feedback Re: Ag110m creation and decay (Sergio Lo Meo)
Re: None Re: Ag110m creation and decay (michel maire)
Re: None Re: Ag110m creation and decay (Vladimir Ivanchenko)
Date: 24 Aug, 2018
From: michel maire <michel maire>

On Thu, 23 Aug 2018 18:31:03 GMT, Vladimir Ivanchenko wrote:
> Hello,
> 
> in the 10.5beta, which Michel was using neutron cross sections were
> improved/fixed in particular, for isotope cross sections if QBBC or
> similar Physics List is used. For HP Physics List nothing was changed.

> If this does not agree with nuclear data, please, let us know.
> 

  HI Vladimir,

  In a previous mail, Sergio has sent to us the plots of cross section of neutron capture on Ag109.
 I attach again his plots.
  In Geant4 10.5-beta, nRadCapture seems invert the 2 channels Ag110 ground state and Ag110[117.59 keV] 

       Michel

 **************************************************************
  Geant4 version Name: geant4-10-04-ref-06    (29-June-2018)
 **************************************************************

 ---------------------------------------------------
                           Hadronic Processes for neutron

  Process: hadElastic
        Model:             hElasticCHIPS: 19.5 MeV ---> 100 TeV
        Model:          NeutronHPElastic: 0 eV  ---> 20 MeV
     Cr_sctns:        NeutronHPElasticXS: 0 eV  ---> 20 MeV
     Cr_sctns:        G4NeutronElasticXS: 0 eV  ---> 100 TeV
     Cr_sctns:            GheishaElastic: 0 eV  ---> 100 TeV

  Process: neutronInelastic
        Model:                      QGSP: 15 GeV ---> 100 TeV
        Model:                     PRECO: 0 eV  ---> 2 MeV
        Model:          INCL++ v6.0_rc18: 1 MeV ---> 20 GeV
     Cr_sctns:      G4NeutronInelasticXS: 0 eV  ---> 100 TeV
     Cr_sctns:       Barashenkov-Glauber: 0 eV  ---> 100 TeV

  Process: nCapture
        Model:               nRadCapture: 0 eV  ---> 100 TeV
     Cr_sctns:        G4NeutronCaptureXS: 0 eV  ---> 100 TeV
     Cr_sctns:          GheishaCaptureXS: 0 eV  ---> 100 TeV

 ---------------------------------------------------

 Run Summary
  Number of events processed : 100000
  User=4.480000s Real=4.489789s Sys=0.000000s

  The run is 100000 neutron of 0.0253 eV  through 10 m   of Ag109 (density: 10.49 g/cm3 )

  Process calls frequency:
	nCapture= 100000

  MeanFreePath:	2.0919 mm  +- 2.0965 mm 	massic: 2.1944 g/cm2 
  CrossSection:	4.7804 cm^-1 		massic: 45.571 mm2/g 
  crossSection per atom:	82.411 barn  

  Verification: crossSections from G4HadronicProcessStore:
            nCapture= 45.531 mm2/g 	82.34 barn  
               total= 45.531 mm2/g 	82.34 barn  

  List of nuclear reactions: 

                     neutron + Ag109 --> N gamma or e- + Ag110:    3568   Q =  6.8092 MeV
            neutron + Ag109 --> N gamma or e- + Ag110[117.590]:   96432   Q =  6.6916 MeV

                          number of gamma or e- (ic): N = 1 --> 10

  List of generated particles:
          Ag110:    3568  Emean =  159.15 eV 	( 64.28 eV  --> 237.99 eV )
  Ag110[117.590]:   96432  Emean =  93.899 eV 	( 10.188 eV  --> 233.9 eV )
             e-:   89466  Emean =  78.472 keV	( 1.1098 keV --> 968.35 keV)
          gamma:  705301  Emean =  939.39 keV	( 10.025 eV  --> 6.8079 MeV)

   Attachment:
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/08/24/00.43-99815-Ag109_to_Ag110.gif
      http://hypernews.slac.stanford.edu/HyperNews/geant4/get/AUX/2018/08/24/00.43-86173-Ag109-402.gif

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