| 1 | ------------------------------------------------------------------- |
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| 2 | |
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| 3 | ========================================================== |
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| 4 | Geant4 - an Object-Oriented Toolkit for Physics Simulation |
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| 5 | ========================================================== |
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| 6 | |
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| 7 | History file for hadronic/models/de_excitation |
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| 8 | ---------------------------------------------- |
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| 9 | |
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| 10 | This file should be used to summarize modifications introduced in the |
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| 11 | code and to keep track of all tags. |
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| 12 | |
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| 13 | --------------------------------------------------------------- |
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| 14 | * Please list in reverse chronological order (last date on top) |
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| 15 | --------------------------------------------------------------- |
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| 16 | |
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| 17 | 09-April 2010 V.Ivanchenko hadr-pre-V09-03-04 |
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| 18 | --------------------------------------------------- |
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| 19 | G4PreCompoundProton, G4PreCompoundDeuteron, G4PreCompoundTriton, |
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| 20 | G4PreCompoundHe3, G4PreCompoundAlpha - (JMQ) return back to published |
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| 21 | varian of OPT3 (Kalbach) parameterization of inverse |
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| 22 | cross section |
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| 23 | |
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| 24 | 01-March 2010 V.Ivanchenko hadr-pre-V09-03-03 |
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| 25 | --------------------------------------------------- |
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| 26 | G4VPreCompoundIon, G4VPreCompoundNucleon - removed dummy classes |
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| 27 | |
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| 28 | 25-February 2010 V.Ivanchenko hadr-pre-V09-03-02 |
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| 29 | --------------------------------------------------- |
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| 30 | G4PreCompoundEmission - more protections for numerical computations are added |
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| 31 | |
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| 32 | 17-February 2010 V.Ivanchenko hadr-pre-V09-03-01 |
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| 33 | --------------------------------------------------- |
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| 34 | G4PreCompoundEmission - (JMQ) return back value of Ef as it was in 9.3 |
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| 35 | |
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| 36 | 19-January 2010 V.Ivanchenko hadr-pre-V09-03-00 |
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| 37 | --------------------------------------------------- |
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| 38 | G4PreCompoundEmission - (JMQ) added protection against unphysical value of |
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| 39 | parameter "an" when exitation energy is huge |
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| 40 | to avoid numerical problem |
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| 41 | - simplified algorithm of sampling |
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| 42 | |
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| 43 | 21-November 2009 V.Ivanchenko hadr-pre-V09-02-07 |
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| 44 | --------------------------------------------------- |
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| 45 | G4PreCompoundTransitions - return back transition probability |
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| 46 | |
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| 47 | 19-November 2009 V.Ivanchenko hadr-pre-V09-02-06 |
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| 48 | --------------------------------------------------- |
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| 49 | G4PreCompoundModel - (JMQ) CEM transition probabilities are set |
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| 50 | as a default |
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| 51 | G4PreCompoundTransitions - (JMQ) CEM transition probabilities have been |
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| 52 | renormalized (transitions with Delta N=+2 |
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| 53 | are increased by factor 5) |
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| 54 | |
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| 55 | 12-November 2009 G.Cosmo hadr-pre-V09-02-05 |
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| 56 | --------------------------------------------------- |
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| 57 | G4PreCompoundEmission - fixed compilation error on Windows. |
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| 58 | |
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| 59 | 12-November 2009 G.Folger hadr-pre-V09-02-04 |
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| 60 | --------------------------------------------------- |
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| 61 | G4PrecompoundEmission - modifiy AngularDistribution() to avoid floating point |
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| 62 | exceptions. |
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| 63 | - remove calls to log in rho() replaced by use of new |
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| 64 | logfactorial() |
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| 65 | |
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| 66 | 13-February 2009 V.Ivanchenko hadr-pre-V09-02-03 |
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| 67 | --------------------------------------------------- |
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| 68 | G4PreCompoundXXX - changed the shape of probabilities (return back to 9.2) |
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| 69 | for d, t, He3, alpha (JMQ) |
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| 70 | |
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| 71 | 12-February 2009 V.Ivanchenko hadr-pre-V09-02-02 |
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| 72 | --------------------------------------------------- |
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| 73 | G4PreCompoundXXX - changed the shape of probabilities |
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| 74 | for d, t, He3, alpha near the Coulomb barrier (JMQ) |
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| 75 | |
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| 76 | 11-February 2009 V.Ivanchenko hadr-pre-V09-02-01 |
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| 77 | --------------------------------------------------- |
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| 78 | G4PreCompoundXXX - set default Opt3 back, add decrease Coulomb barrier |
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| 79 | for d, t, a, he3 (JMQ) |
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| 80 | |
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| 81 | 10-February 2009 V.Ivanchenko hadr-pre-V09-02-00 |
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| 82 | --------------------------------------------------- |
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| 83 | Some clean up of comments |
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| 84 | G4PreCompoundIon - fixed probability of light ion emmision (JMQ) |
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| 85 | G4PreCompoundXXX - by default Opt1 is used for d, t, a, he3, |
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| 86 | Opt3 for n, p (JMQ) |
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| 87 | |
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| 88 | 09-December 2008 A.Howard hadr-pre-V09-01-15 |
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| 89 | --------------------------------------------------- |
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| 90 | Added protection for close to zero excitation energy in |
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| 91 | G4PreCompoundModel.cc (according to JMQ, MAC) to not try to de-excite. |
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| 92 | |
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| 93 | 09-December 2008 A.Howard hadr-pre-V09-01-14 |
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| 94 | --------------------------------------------------- |
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| 95 | Added protection for close to zero excitation energy in |
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| 96 | G4PreCompoundTransitions.cc (returns 0.0), prevents FPE later on. |
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| 97 | |
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| 98 | 27-November 2008 A.Howard hadr-pre-V09-01-13 |
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| 99 | --------------------------------------------------- |
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| 100 | Added data member initialisation to G4VPreCompoundTransitions.hh |
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| 101 | |
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| 102 | 19-November 2008 A.Howard hadr-pre-V09-01-12 |
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| 103 | --------------------------------------------------- |
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| 104 | JMQ fix to G4PreCompoundNeutron.cc for Zirconium (if (nu < 0.)nu=-nu). |
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| 105 | |
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| 106 | 30-September 2008 A.Howard hadr-pre-V09-01-11 |
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| 107 | --------------------------------------------------- |
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| 108 | Trivial protection against negative probabilities for incident protons on |
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| 109 | targets with A < Carbon. |
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| 110 | |
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| 111 | 22-September 2008 A.Howard hadr-pre-V09-01-10 |
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| 112 | --------------------------------------------------- |
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| 113 | JMQ's latest developments - which are an extension of hadr-pre-V09-01-08 with |
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| 114 | cross-section options (equivalent to the de-excitation modifications) and other |
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| 115 | options (SICB, Never Go Back,...). In addition Gunter's fix to the factorials |
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| 116 | is included from hadr-pre-V09-01-09. |
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| 117 | Added new files: G4PreCompoundAlpha.cc G4PreCompoundDeuteron.cc |
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| 118 | G4PreCompoundHe3.cc G4PreCompoundNeutron.cc G4PreCompoundProton.cc |
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| 119 | G4PreCompoundTriton.cc (Classes previously existed. Now they have more |
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| 120 | involved cross-section calculations). |
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| 121 | |
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| 122 | 19-September 2008 A.Howard hadr-pre-V09-01-09 |
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| 123 | --------------------------------------------------- |
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| 124 | Including Gunter's fix (see 11-August below) on top of ref-07 |
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| 125 | (hadr-pre-V09-00-04), i.e. without JMQ's developments. |
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| 126 | |
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| 127 | 11-August 2008 G.Folger |
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| 128 | ----------------------------------------------- |
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| 129 | Rewrite algorithm in G4PreCompoundEmission::rho() to avoid frequent |
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| 130 | floating point overflow when using Precompund in combination |
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| 131 | with Binary Cascade. |
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| 132 | |
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| 133 | |
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| 134 | 24 July 2008 J. M. Quesada hadr-pre-V09-01-08 |
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| 135 | --------------------------------------------------- |
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| 136 | Minor fixes and Coulomb barrier just for Wellisch's proton cross section |
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| 137 | (OPT=2) |
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| 138 | |
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| 139 | |
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| 140 | 23 July 2008 V.Ivanchenko hadr-pre-V09-01-07 |
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| 141 | --------------------------------------------------- |
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| 142 | Fixed mistake in tagging |
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| 143 | |
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| 144 | 23 July 2008 V.Ivanchenko hadr-pre-V09-01-06 |
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| 145 | --------------------------------------------------- |
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| 146 | Return back Coulomb barrier initialisation (J.M.Quesada) |
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| 147 | |
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| 148 | 27 June 2008 V.Ivanchenko hadr-pre-V09-01-05 |
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| 149 | --------------------------------------------------- |
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| 150 | Fixed G4PreCompoundNucleon and G4PreCompoundIon for |
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| 151 | Coulomb barrier, added protections for zero cross sections, |
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| 152 | OPT=2 is used (J.M.Quesada) |
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| 153 | |
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| 154 | 05 June 2008 J. M. Quesada hadr-pre-V09-01-04 |
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| 155 | --------------------------------------------------- |
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| 156 | Bug fixed in OPT=1 (Chatterjee) charged particle cross sections. |
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| 157 | Unphysical values at very low emission energies have been corrected (set |
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| 158 | to 0); OPT=1 ( OPT=2 in previous tag) |
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| 159 | |
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| 160 | |
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| 161 | 15-May 2008 J. M.Quesada hadr-pre-V09-01-03 |
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| 162 | ----------------------------------------------- |
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| 163 | The retrieval of transition probabilities in G4PreCompoundModel.cc |
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| 164 | (for protection against unphysically crossing the landa_+=landa_- condition) |
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| 165 | was misplaced. Now it has been placed inside the preequilibrium transitions |
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| 166 | loop. |
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| 167 | |
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| 168 | 8-May 2008 J. M.Quesada hadr-pre-V09-01-02 |
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| 169 | ----------------------------------------------- |
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| 170 | Protection against non physical situation has been set: Equilibrium exciton number |
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| 171 | Neq (when reached, equilibrium regime starts) should correspond to equal transition |
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| 172 | probabilities "back" and "forth". Nevertheless, for heavy target (Neq is big even |
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| 173 | for low incident energies) after first emission this condition (equal trans. prob.) |
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| 174 | is reached far before reaching corresponding Neq of the residual. Unless this "jump" |
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| 175 | to equilibrium is forced in this case, preequilibrium will be |
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| 176 | spuriously prolonged (as a side effect, with huge CPU consumption). |
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| 177 | G4PreCompoundModel and G4PreCompoundTransitions classes have been modified. |
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| 178 | |
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| 179 | |
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| 180 | 1-May 2008 J. M.Quesada hadr-pre-V09-01-01 |
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| 181 | ----------------------------------------------- |
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| 182 | - First trial with cvs. 00 skipped by mistake. |
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| 183 | New inverse cross sections: |
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| 184 | OPT=1 Chetterjee's parameterization to reaction cross sections from optical potential global fittings. |
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| 185 | OPT=2 as OPT=1 but for protons the Wellisch's parameterization for protons is used (DEFAULT) |
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| 186 | OPT=3 Kalbach's modifications of Chatterjee's parameterization of cross sections |
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| 187 | OPT=4 as OPT=3 but for protons the Wellisch's parameterization for protons is used |
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| 188 | |
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| 189 | Coulomb barrier has been suppressed as it enters through inverse cross sections. Also methods related to former Dostrovski's cross sections (alpha , beta and C parameters) have been suppressed. In all particle header files: |
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| 190 | G4PreCompoundNucleon.hh ,G4PreCompoundNeutron.hh,G4PreCompoundProton.hh, G4PreCompoundIon.hh, G4PreCompoundDeuteron.hh, G4PreCompoundTriton.hh ,G4PreCompoundHe3.hh , G4PreCompoundAlpha.hh |
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| 191 | |
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| 192 | |
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| 193 | Soft cutoff transition from equilibrium to equilibrium has been suppressed (unphysical and not necessary anymore).In G4PreCompoundModel. |
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| 194 | |
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| 195 | New transition probabilities : |
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| 196 | OPT=1 Gudima's formulae |
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| 197 | OPT=2 Machner parameterization of matrix elements for transitions (DEFAULT) |
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| 198 | |
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| 199 | Level density is set to A/10 (Gudima's prescription). |
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| 200 | |
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| 201 | Several bugs fixed (average xs in nucleon-nucleon xs in G4PreCompundTransitions.cc and emission probability formula in G4PreCompoundIon.cc ) . |
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| 202 | |
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| 203 | 25-October 2007 A.Howard hadr-pre-V09-00-04 |
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| 204 | ----------------------------------------------- |
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| 205 | - Removed compilation warning on unused parameter in G4PreCompoundIon.cc |
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| 206 | |
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| 207 | |
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| 208 | 11-October 2007 A.Howard hadr-pre-V09-00-03 |
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| 209 | ----------------------------------------------- |
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| 210 | - Corrected for integer arithmetic bug in G4PreCompoundModel.cc |
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| 211 | (ratio of charged to neutral excitons) |
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| 212 | |
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| 213 | |
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| 214 | 01-October 2007 A.Howard hadr-pre-V09-00-02 |
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| 215 | ----------------------------------------------- |
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| 216 | - Protected Rj (Q_beta) factor against divide by zeroes (should never happen?) |
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| 217 | The following files have been modified: |
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| 218 | G4PreCompoundAlpha.hh, G4PreCompoundDeuteron.hh, G4PreCompoundHe3.hh, |
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| 219 | G4PreCompoundTriton.hh, G4PreCompoundNeutron.hh, G4PreCompoundProton.hh |
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| 220 | |
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| 221 | |
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| 222 | 23-August 2007 A.Howard hadr-pre-V09-00-01 |
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| 223 | ---------------------------------------------- |
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| 224 | - Development tag incorporating further suggestions/corrections from |
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| 225 | Jose-Manuel Quesada particularly with respect to light ion production. |
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| 226 | The following files have been modified: |
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| 227 | G4PreCompoundIon.cc, G4PreCompoundDeuteron.hh, G4PreCompoundHe3.hh, |
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| 228 | G4PreCompoundTriton.hh, G4PreCompoundAlpha.hh, G4PreCompoundIon.hh, |
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| 229 | G4VPreCompoundIon.hh (unused?) |
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| 230 | |
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| 231 | |
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| 232 | 23-July 2007 A.Howard hadr-pre-V09-00-00 |
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| 233 | ---------------------------------------------- |
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| 234 | - Development tag incorporating the suggestions/corrections of Jose-Manuel |
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| 235 | Quesada. These should reflect the literature and units expected for the |
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| 236 | exciton model. The following files have been modified: |
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| 237 | G4PreCompoundNucleon.hh, G4VPreCompoundNucleon.hh, G4PreCompoundAlpha.hh, |
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| 238 | G4PreCompoundHe3.hh, G4PreCompoundDeuteron.hh, G4PreCompoundNeutron.hh, |
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| 239 | G4PreCompoundProton.hh, G4PreCompoundTriton.hh |
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| 240 | G4VPreCompoundIon.cc, G4PreCompoundIon.cc, G4PreCompoundModel.cc, |
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| 241 | G4VPreCompoundFragment.cc, G4PreCompoundTransitions.cc, |
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| 242 | G4PreCompoundNucleon.cc, G4VPreCompoundNucleon.cc |
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| 243 | The main changes are: |
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| 244 | - introducing an Rj factor into the probability calculation, |
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| 245 | - correcting the units for the Pauli Blocking Factor - missing a g factor, |
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| 246 | - decreasing the number of charged particles if the number excitons is |
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| 247 | decreased (previously this number was only increased with increasing |
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| 248 | excitons). |
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| 249 | |
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| 250 | |
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| 251 | 04-May 2007 G.Folger hadr-pre-V08-02-00 |
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| 252 | ---------------------------------------------- |
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| 253 | - G4PreCompoundTransitions.cc: Protect against divide by 0 |
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| 254 | |
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| 255 | 19 Aug 2006 Dennis Wright (hadr-pre-V08-01-00) |
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| 256 | ---------------------------------------------- |
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| 257 | - exciton_model |
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| 258 | G4VPreCompoundFragment.hh, .icc : remove meaningless const from |
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| 259 | methods GetA, GetZ, GetRestA, GetRestZ, GetCoulombBarrier, GetBindingEnergy, |
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| 260 | GetMaximalKineticEnergy, GetEnergyThreshold, GetEmissionProbability, |
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| 261 | GetNuclearMass, GetRestNuclearMass and GetReducedMass |
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| 262 | |
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