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IN NO 43 // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DI 43 // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 44 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGE 44 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 45 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES 45 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 46 // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AN 46 // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 47 // WHETHER IN CONTRACT, STRICT LIABILITY, OR T 47 // WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 48 // OTHERWISE) ARISING IN ANY WAY OUT OF THE US 48 // OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 49 // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 49 // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 50 // 50 // 51 // Copyright (c) 2006 The Regents of the Unive 51 // Copyright (c) 2006 The Regents of the University of California. 52 // All rights reserved. 52 // All rights reserved. 53 // UCRL-CODE-224807 53 // UCRL-CODE-224807 54 // 54 // 55 // 55 // >> 56 // $Id: G4SmpNuDistDataPu239_241.cc 67966 2013-03-13 09:38:38Z gcosmo $ 56 // 57 // 57 58 58 #include <cmath> 59 #include <cmath> 59 #include "G4Pow.hh" << 60 #include "G4fissionEvent.hh" 60 #include "G4fissionEvent.hh" 61 61 62 G4int G4fissionEvent::G4SmpNuDistDataPu239_241 62 G4int G4fissionEvent::G4SmpNuDistDataPu239_241(G4double nubar) { 63 63 64 /* 64 /* 65 Description 65 Description 66 Sample Number of Neutrons from fission in 66 Sample Number of Neutrons from fission in Pu-239 and Pu-241 using 67 Zucker and Holden's tabulated data for Pu- 67 Zucker and Holden's tabulated data for Pu-239 68 The P(nu) distribution is given as a funct 68 The P(nu) distribution is given as a function of the average 69 number of neutrons from fission, based on 69 number of neutrons from fission, based on interpolation of the 70 Pu-239 data from Zucker and Holden. 70 Pu-239 data from Zucker and Holden. 71 */ 71 */ 72 72 73 /* 73 /* 74 Input 74 Input 75 nubar - average number of neutrons per 75 nubar - average number of neutrons per fission 76 Output 76 Output 77 G4SmpNuDistDataPu239_241 - sampled multip 77 G4SmpNuDistDataPu239_241 - sampled multiplicity 78 78 79 */ 79 */ 80 80 81 G4double pnu[9], cpnu, sum; 81 G4double pnu[9], cpnu, sum; 82 G4double r; 82 G4double r; 83 83 84 /* 84 /* 85 Check if nubar is within the range of experi 85 Check if nubar is within the range of experimental values 86 */ 86 */ 87 if(nubar >= 2.85 && nubar <= 4.25) { 87 if(nubar >= 2.85 && nubar <= 4.25) { 88 /* 88 /* 89 Use Zucker and Holden Data 89 Use Zucker and Holden Data 90 */ 90 */ 91 G4Pow* Pow=G4Pow::GetInstance(); << 91 pnu[0]=-2.412937e-3*std::pow(nubar,3)+3.210687e-2*std::pow(nubar,2)-1.434037e-1*nubar+2.150733e-1; 92 pnu[0]=-2.412937e-3*Pow->powN(nubar,3)+3. << 92 pnu[1]=-2.650615e-2*std::pow(nubar,3)+3.290389e-1*std::pow(nubar,2)-1.389007*nubar+2.002327; 93 pnu[1]=-2.650615e-2*Pow->powN(nubar,3)+3. << 93 pnu[2]=3.232028e-2*std::pow(nubar,3)-3.176093e-1*std::pow(nubar,2)+8.605098e-1*nubar-3.411191e-1; 94 pnu[2]=3.232028e-2*Pow->powN(nubar,3)-3.1 << 94 pnu[3]=1.623289e-2*std::pow(nubar,3)-2.414705e-1*std::pow(nubar,2)+1.007282*nubar-9.583769e-1; 95 pnu[3]=1.623289e-2*Pow->powN(nubar,3)-2.4 << 95 pnu[4]=1.932275e-2*std::pow(nubar,3)-2.923666e-1*std::pow(nubar,2)+1.421383*nubar-1.924025; 96 pnu[4]=1.932275e-2*Pow->powN(nubar,3)-2.9 << 96 pnu[5]=-6.185679e-2*std::pow(nubar,3)+6.82888e-1*std::pow(nubar,2)-2.347653*nubar+2.647049; 97 pnu[5]=-6.185679e-2*Pow->powN(nubar,3)+6. << 97 pnu[6]=1.79773e-2*std::pow(nubar,3)-1.60516e-1*std::pow(nubar,2)+5.228077e-1*nubar-5.939556e-1; 98 pnu[6]=1.79773e-2*Pow->powN(nubar,3)-1.60 << 98 pnu[7]=3.530038e-3*std::pow(nubar,4)-4.925425e-2*std::pow(nubar,3)+2.726784e-1*std::pow(nubar,2)-6.81281e-1*nubar+6.347577e-1; 99 pnu[7]=3.530038e-3*Pow->powN(nubar,4)-4.9 << 99 pnu[8]=2.837523e-3*std::pow(nubar,3)-2.678644e-2*std::pow(nubar,2)+8.545638e-2*nubar-9.156078e-2; 100 pnu[8]=2.837523e-3*Pow->powN(nubar,3)-2.6 << 101 100 102 sum=pnu[0]+pnu[1]+pnu[2]+pnu[3]+pnu[4]+pn 101 sum=pnu[0]+pnu[1]+pnu[2]+pnu[3]+pnu[4]+pnu[5]+pnu[6]+pnu[7]+pnu[8]; 103 102 104 pnu[0]=pnu[0]/sum; 103 pnu[0]=pnu[0]/sum; 105 pnu[1]=pnu[1]/sum; 104 pnu[1]=pnu[1]/sum; 106 pnu[2]=pnu[2]/sum; 105 pnu[2]=pnu[2]/sum; 107 pnu[3]=pnu[3]/sum; 106 pnu[3]=pnu[3]/sum; 108 pnu[4]=pnu[4]/sum; 107 pnu[4]=pnu[4]/sum; 109 pnu[5]=pnu[5]/sum; 108 pnu[5]=pnu[5]/sum; 110 pnu[6]=pnu[6]/sum; 109 pnu[6]=pnu[6]/sum; 111 pnu[7]=pnu[7]/sum; 110 pnu[7]=pnu[7]/sum; 112 pnu[8]=pnu[8]/sum; 111 pnu[8]=pnu[8]/sum; 113 112 114 r=fisslibrng(); 113 r=fisslibrng(); 115 114 116 if(r <= pnu[0]) return 0; 115 if(r <= pnu[0]) return 0; 117 116 118 cpnu=pnu[0]+pnu[1]; 117 cpnu=pnu[0]+pnu[1]; 119 if(r <= cpnu) return 1; 118 if(r <= cpnu) return 1; 120 119 121 cpnu=cpnu+pnu[2]; 120 cpnu=cpnu+pnu[2]; 122 if(r <= cpnu) return 2; 121 if(r <= cpnu) return 2; 123 122 124 cpnu=cpnu+pnu[3]; 123 cpnu=cpnu+pnu[3]; 125 if(r <= cpnu) return 3; 124 if(r <= cpnu) return 3; 126 125 127 cpnu=cpnu+pnu[4]; 126 cpnu=cpnu+pnu[4]; 128 if(r <= cpnu) return 4; 127 if(r <= cpnu) return 4; 129 128 130 cpnu=cpnu+pnu[5]; 129 cpnu=cpnu+pnu[5]; 131 if(r <= cpnu) return 5; 130 if(r <= cpnu) return 5; 132 131 133 cpnu=cpnu+pnu[6]; 132 cpnu=cpnu+pnu[6]; 134 if(r <= cpnu) return 6; 133 if(r <= cpnu) return 6; 135 134 136 cpnu=cpnu+pnu[7]; 135 cpnu=cpnu+pnu[7]; 137 if(r <= cpnu) return 7; 136 if(r <= cpnu) return 7; 138 else return 8; 137 else return 8; 139 138 140 } else { 139 } else { 141 /* 140 /* 142 Use Terrell's formula 141 Use Terrell's formula 143 */ 142 */ 144 return (G4int) G4SmpTerrell(nubar); 143 return (G4int) G4SmpTerrell(nubar); 145 } 144 } 146 } 145 } 147 146