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1 // 1 2 // ******************************************* 3 // * License and Disclaimer 4 // * 5 // * The Geant4 software is copyright of th 6 // * the Geant4 Collaboration. It is provided 7 // * conditions of the Geant4 Software License 8 // * LICENSE and available at http://cern.ch/ 9 // * include a list of copyright holders. 10 // * 11 // * Neither the authors of this software syst 12 // * institutes,nor the agencies providing fin 13 // * work make any representation or warran 14 // * regarding this software system or assum 15 // * use. Please see the license in the file 16 // * for the full disclaimer and the limitatio 17 // * 18 // * This code implementation is the result 19 // * technical work of the GEANT4 collaboratio 20 // * By using, copying, modifying or distri 21 // * any work based on the software) you ag 22 // * use in resulting scientific publicati 23 // * acceptance of all terms of the Geant4 Sof 24 // ******************************************* 25 26 //-------------------------------------------- 27 // ClassName: G4UCNMicroRoughnessHelper 28 // 29 // Class description: 30 // 31 // This file contains the headers of various f 32 // calculation of microroughness. 33 // see A. Steyerl, Z. Physik 254 (1972) 169. 34 // 35 // Angular cut: for angles which are closer to 36 // certain value (0.01°), the probability is 37 // hang-up at the generation of the polar angl 38 // distribution 39 // 40 // 12-05-14, adopted from Stefan Heule (PSI) T 41 // reported in F. Atchison et al., E 42 // DOI: 10.1140/epja/i2 43 // Thanks to Geza Zsigmond 44 // 45 // 02-11-19 Stefan Heule's thesis is availabl 46 // https://www.psi.ch/en/ltp-ucn-phy 47 // or directly at https://opac.nebis 48 49 #ifndef G4MICROROUGHNESSHELPER_HH 50 #define G4MICROROUGHNESSHELPER_HH 1 51 52 #include "G4Types.hh" 53 54 class G4UCNMicroRoughnessHelper 55 { 56 public: // with description 57 static G4UCNMicroRoughnessHelper* GetInstanc 58 59 public: // with description 60 // Transmitted intensity with k-vector in va 61 // arguments: 62 // 1) cos(theta)^2, 63 // 2) (k_l/k)^2 64 G4double S2(G4double, G4double) const; 65 66 // Transmitted intensity with k-vector withi 67 // arguments: 68 // 1) cos(theta')^2, 69 // 2) (k_l/k')^2 70 G4double SS2(G4double, G4double) const; 71 72 // Fourier-tranform of the autocorrelation f 73 // arguments: 74 // 1) k^2, 75 // 2) theta_i, 76 // 3) theta_o, 77 // 4) phi_o, 78 // 5) b^2, 79 // 6) w^2, 80 // 7) angular cut 81 G4double Fmu(G4double, G4double, G4double, G 82 83 // Fourier-tranform of the autocorrelation f 84 // the medium 85 // arguments: 86 // 1) k, 87 // 2) k', 88 // 3) theta_i, 89 // 4) theta'_o, 90 // 5) phi'_o, 91 // 6) b^2, 92 // 7) w^2, 93 // 8) angular cut 94 // 9) theta_refract 95 G4double FmuS( 96 G4double, G4double, G4double, G4double, G4 97 98 // Integral probability for non-specular ref 99 // arguments: 100 // 1) E, 101 // 2) V_F, 102 // 3) theta_i, 103 // 4) number of angles theta_o for w 104 // 5) number of angles phi_o for whi 105 // 6) b^2, 106 // 7) w^2, 107 // 8) pointer to G4double array with 108 // 9) angular cut 109 G4double IntIplus( 110 G4double, G4double, G4double, G4int, G4int 111 112 // Probability of non-specular reflection wi 113 // arguments: 114 // 1) E, 115 // 2) V_F, 116 // 3) theta_i, 117 // 4) theta_o, 118 // 5) phi_o, 119 // 6) b, 120 // 7) w, 121 // 8) angular cut 122 G4double ProbIplus( 123 G4double, G4double, G4double, G4double, G4 124 125 // Integral probability for non-specular tra 126 // arguments: 127 // 1) E, 128 // 2) V_F, 129 // 3) theta_i, 130 // 4) number of angles theta_o for w 131 // 5) number of angles phi_o for whi 132 // 6) b^2, 133 // 7) w^2, 134 // 8) pointer to G4double array with 135 // 9) angular cut 136 G4double IntIminus( 137 G4double, G4double, G4double, G4int, G4int 138 139 // Probability of non-specular transmission 140 // arguments: 141 // 1) E, 142 // 2) V_F, 143 // 3) theta_i, 144 // 4) theta'_o, 145 // 5) phi'_o, 146 // 6) b, 147 // 7) w, 148 // 8) angular cut 149 G4double ProbIminus( 150 G4double, G4double, G4double, G4double, G4 151 152 protected: 153 G4UCNMicroRoughnessHelper() = default; 154 ~G4UCNMicroRoughnessHelper(); 155 156 private: 157 static G4UCNMicroRoughnessHelper* fpInstance 158 }; 159 160 #endif // G4MICROROUGHNESSHELPER_HH 161