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G4BertiniEvaporationChannel.cc
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25 //
26 //
27 // Implementation of the HETC88 code into Geant4.
28 // Evaporation and De-excitation parts
29 // T. Lampen, Helsinki Institute of Physics, May-2000
30 
31 #include "globals.hh"
32 #include "G4ios.hh"
33 #include "Randomize.hh"
34 #include "G4PhysicalConstants.hh"
35 #include "G4SystemOfUnits.hh"
36 #include "G4Neutron.hh"
37 #include "G4Proton.hh"
38 #include "G4Deuteron.hh"
39 #include "G4Triton.hh"
40 #include "G4Alpha.hh"
41 #include "G4ParticleTable.hh"
42 #include "G4Nucleus.hh"
44 
45 
47 {
48  verboseLevel = 0;
49 }
50 
51 
53 {
54 }
55 
56 
58 {
59  verboseLevel = level;
60 }
61 
62 
64 {
65  nucleusA = a;
66 }
67 
68 
70 {
71  nucleusZ = z;
72 }
73 
74 
76 {
77  return particleA;
78 }
79 
80 
82 {
83  return particleZ;
84 }
85 
86 
88 {
90 }
91 
92 
94 {
95  G4int residualZ = nucleusZ - particleZ;
96  G4int residualA = nucleusA - particleA;
97 
98  // Note: pairing energy is zero for odd nucleon number.
99 
100  if ( isCorrection ) correction = pairingEnergyProtons( residualZ )
101  + pairingEnergyNeutrons( residualA - residualZ );
102  else correction = 0;
103 }
104 
105 
107 {
108  if ( verboseLevel >= 4 )
109  G4cout << "G4BerEvaporationChannel : probability of particle " << name
110  << " is " << emissionProbability << G4endl;
111 
112  return emissionProbability;
113 }
114 
115 
117 {
118  return name;
119 }
120 
121 
123 {
124  emissionProbability = newProb;
125  return;
126 }
127 
128 
130 {
131  // The reaction Q is calculated by using the excess masses of the
132  // secondary particle and the initial and residual nuclei
133  G4int residualZ = nucleusZ - particleZ;
134  G4int residualA = nucleusA - particleA;
135 // G4int residualN = residualA - residualZ;
136 // G4int nucleusN = nucleusA - nucleusZ;
137 
138  // All the following are by default in MeV
139  const G4double e1 = G4NucleiProperties::GetMassExcess( residualA, residualZ );
141 
142  return e1 - e2 + G4NucleiProperties::GetMassExcess( particleA, particleZ );
143  // In HETC88 : Mass excesses were calculated with the Cameron mass excess formula,
144  // see Cameron, Canadian Journal of Physics,
145  // vol. 35, 1957, p.1022
146  // Also mass excesses of particles were
147  // 8.3675, 7.5851, 13.7279, 15.8381, 15.8195, 3.6092 for
148  // n, p, D, T, 3He, 4He
149 }
150 
151 
153 {
154  G4double threshold = getQ() + getCoulomb();
155  return threshold;
156 }
157 
158 
160 {
161  G4int residualZ = nucleusZ - particleZ;
162  G4int residualA = nucleusA - particleA;
163  const G4double factor = 0.84696; // = e / ( 4 pi epsilon_0 r0 ) * 10^-6, r0=1.7E-15
164  // In HETC88 this factor was 0.88235, perhaps due to different r0
165 
166  G4double coulombBarrier = factor * particleZ * qmFactor() * residualZ /
167  ( std::pow( G4double(residualA), 0.33333333 ) + rho ) * MeV;
168 
169  if ( verboseLevel >= 10 )
170  G4cout << " G4BertiniEvaporationChannel::getThresh() " << G4endl
171  << " residualZ " << residualZ << G4endl
172  << " residualA " << residualA << G4endl
173  << " qmFactor " << qmFactor() << G4endl
174  << " Q " << getQ() << G4endl
175  << " rho " << rho << G4endl
176  << " part Z " << particleZ << G4endl
177  << " (correction) " << correction << G4endl;
178 
179  return coulombBarrier;
180 }
181 
182 
184 {
185  // Coefficient k_p for empirical cross section
186  // formula presented in Dostrovsky, Phys. Rev.,
187  // vol. 116, 1959
188  return 0;
189 }
190 
191 
193 {
194  G4int residualZ = nucleusZ - particleZ;
195  G4int residualA = nucleusA - particleA;
196  G4double b0 = 8;
197  G4double y0 = 1.5;
198 
199  G4double temp = ( residualA - 2.0 * residualZ ) / residualA;
200  G4double smallA = residualA * ( 1.0 + y0 * std::pow( temp, 2. ) ) / b0 / MeV;
201 
202  // In HETC98 b0 = b0(E).
203 
204  return smallA;
205 }
206 
207 
209 {
210  // Samples isotropic random direction cosines.
211  G4double CosTheta = 1.0 - 2.0 * G4UniformRand();
212  G4double SinTheta = std::sqrt( 1.0 - CosTheta * CosTheta );
213  G4double Phi = twopi * G4UniformRand();
214 
215  u = std::cos( Phi ) * SinTheta;
216  v = std::cos( Phi ) * CosTheta,
217  w = std::sin( Phi );
218 
219  return;
220 }
221 
222 
224 {
225  // Pairing energy for protons P(Z), see
226  // Cameron, Nuclear Level Spacings, p. 1040
227  // Canadian Journal of Physics, vol 36, 1958
228  G4double table [130] = {
229  0.00000000E+00, 0.54399996E+01, 0.00000000E+00, 0.27599993E+01, 0.00000000E+00,
230  0.33399992E+01, 0.00000000E+00, 0.26999998E+01, 0.00000000E+00, 0.18999996E+01,
231  0.00000000E+00, 0.21199999E+01, 0.00000000E+00, 0.21299992E+01, 0.00000000E+00,
232  0.15399990E+01, 0.00000000E+00, 0.14199991E+01, 0.00000000E+00, 0.15099993E+01,
233  0.00000000E+00, 0.17299995E+01, 0.00000000E+00, 0.14399996E+01, 0.00000000E+00,
234  0.14499998E+01, 0.00000000E+00, 0.13699999E+01, 0.00000000E+00, 0.10899992E+01,
235  0.00000000E+00, 0.13599997E+01, 0.00000000E+00, 0.14199991E+01, 0.00000000E+00,
236  0.13299990E+01, 0.00000000E+00, 0.11999998E+01, 0.00000000E+00, 0.99999988E+00,
237  0.00000000E+00, 0.11599998E+01, 0.00000000E+00, 0.12799997E+01, 0.00000000E+00,
238  0.13799992E+01, 0.00000000E+00, 0.13799992E+01, 0.00000000E+00, 0.13199997E+01,
239  0.00000000E+00, 0.10399990E+01, 0.00000000E+00, 0.11099997E+01, 0.00000000E+00,
240  0.11299992E+01, 0.00000000E+00, 0.12099991E+01, 0.00000000E+00, 0.14299994E+01,
241  0.00000000E+00, 0.11499996E+01, 0.00000000E+00, 0.98999995E+00, 0.00000000E+00,
242  0.90999997E+00, 0.00000000E+00, 0.91999996E+00, 0.00000000E+00, 0.99999988E+00,
243  0.00000000E+00, 0.11099997E+01, 0.00000000E+00, 0.12299995E+01, 0.00000000E+00,
244  0.84999996E+00, 0.00000000E+00, 0.97999996E+00, 0.00000000E+00, 0.71999997E+00,
245  0.00000000E+00, 0.79999995E+00, 0.00000000E+00, 0.76999998E+00, 0.00000000E+00,
246  0.88999999E+00, 0.00000000E+00, 0.91999996E+00, 0.00000000E+00, 0.79999995E+00,
247  0.00000000E+00, 0.80999994E+00, 0.00000000E+00, 0.69000000E+00, 0.00000000E+00,
248  0.69999999E+00, 0.00000000E+00, 0.75999999E+00, 0.00000000E+00, 0.72999996E+00,
249  0.00000000E+00, 0.79999995E+00, 0.00000000E+00, 0.73999995E+00, 0.00000000E+00,
250  0.72999996E+00, 0.00000000E+00, 0.71999997E+00, 0.00000000E+00, 0.71999997E+00,
251  0.00000000E+00, 0.71999997E+00, 0.00000000E+00, 0.70999998E+00, 0.00000000E+00,
252  0.69000000E+00, 0.00000000E+00, 0.67999995E+00, 0.00000000E+00, 0.65999997E+00,
253  0.00000000E+00, 0.60999995E+00, 0.00000000E+00, 0.41999996E+00, 0.00000000E+00,
254  0.35999995E+00, 0.00000000E+00, 0.40999997E+00, 0.00000000E+00, 0.48999995E+00
255  };
256  if ( Z>130 ) throw G4HadronicException(__FILE__, __LINE__, " G4BertiniEvaporationChannel: pairing energy for protons called with too large Z " );
257  return table[ Z-1 ]*MeV;
258 }
259 
260 
262 {
263 // Pairing energy for neutrons P(N), see
264 // Cameron, Nuclear Level Spacings, p. 1040
265 // Canadian Journal of Physics, vol 36, 1958
266  G4double table[200] = {
267  0.00000000E+00, 0.59799995E+01, 0.00000000E+00, 0.27699995E+01, 0.00000000E+00,
268  0.31599998E+01, 0.00000000E+00, 0.30099993E+01, 0.00000000E+00, 0.16799994E+01,
269  0.00000000E+00, 0.17299995E+01, 0.00000000E+00, 0.21699991E+01, 0.00000000E+00,
270  0.17399998E+01, 0.00000000E+00, 0.17500000E+01, 0.00000000E+00, 0.17199993E+01,
271  0.00000000E+00, 0.16299992E+01, 0.00000000E+00, 0.14099998E+01, 0.00000000E+00,
272  0.12899990E+01, 0.00000000E+00, 0.14699993E+01, 0.00000000E+00, 0.13199997E+01,
273  0.00000000E+00, 0.14599991E+01, 0.00000000E+00, 0.14399996E+01, 0.00000000E+00,
274  0.14599991E+01, 0.00000000E+00, 0.15199995E+01, 0.00000000E+00, 0.15099993E+01,
275  0.00000000E+00, 0.14699993E+01, 0.00000000E+00, 0.14499998E+01, 0.00000000E+00,
276  0.12799997E+01, 0.00000000E+00, 0.12299995E+01, 0.00000000E+00, 0.12699995E+01,
277  0.00000000E+00, 0.61999995E+00, 0.00000000E+00, 0.75999999E+00, 0.00000000E+00,
278  0.12299995E+01, 0.00000000E+00, 0.12199993E+01, 0.00000000E+00, 0.13999996E+01,
279  0.00000000E+00, 0.13599997E+01, 0.00000000E+00, 0.12999992E+01, 0.00000000E+00,
280  0.12899990E+01, 0.00000000E+00, 0.12399998E+01, 0.00000000E+00, 0.12799997E+01,
281  0.00000000E+00, 0.12399998E+01, 0.00000000E+00, 0.11999998E+01, 0.00000000E+00,
282  0.94000000E+00, 0.00000000E+00, 0.99999988E+00, 0.00000000E+00, 0.10499992E+01,
283  0.00000000E+00, 0.53999996E+00, 0.00000000E+00, 0.59999996E+00, 0.00000000E+00,
284  0.75000000E+00, 0.00000000E+00, 0.75000000E+00, 0.00000000E+00, 0.84999996E+00,
285  0.00000000E+00, 0.96999997E+00, 0.00000000E+00, 0.10199995E+01, 0.00000000E+00,
286  0.10499992E+01, 0.00000000E+00, 0.10599995E+01, 0.00000000E+00, 0.10699997E+01,
287  0.00000000E+00, 0.10599995E+01, 0.00000000E+00, 0.10499992E+01, 0.00000000E+00,
288  0.10199995E+01, 0.00000000E+00, 0.96999997E+00, 0.00000000E+00, 0.90999997E+00,
289  0.00000000E+00, 0.82999998E+00, 0.00000000E+00, 0.73999995E+00, 0.00000000E+00,
290  0.65999997E+00, 0.00000000E+00, 0.60999995E+00, 0.00000000E+00, 0.60999995E+00,
291  0.00000000E+00, 0.89999998E+00, 0.00000000E+00, 0.51999998E+00, 0.00000000E+00,
292  0.80999994E+00, 0.00000000E+00, 0.67999995E+00, 0.00000000E+00, 0.71999997E+00,
293  0.00000000E+00, 0.76999998E+00, 0.00000000E+00, 0.67999995E+00, 0.00000000E+00,
294  0.66999996E+00, 0.00000000E+00, 0.79999995E+00, 0.00000000E+00, 0.67999995E+00,
295  0.00000000E+00, 0.63999999E+00, 0.00000000E+00, 0.57999998E+00, 0.00000000E+00,
296  0.54999995E+00, 0.00000000E+00, 0.56999993E+00, 0.00000000E+00, 0.56999993E+00,
297  0.00000000E+00, 0.54999995E+00, 0.00000000E+00, 0.59999996E+00, 0.00000000E+00,
298  0.57999998E+00, 0.00000000E+00, 0.57999998E+00, 0.00000000E+00, 0.60999995E+00,
299  0.00000000E+00, 0.63000000E+00, 0.00000000E+00, 0.64999998E+00, 0.00000000E+00,
300  0.65999997E+00, 0.00000000E+00, 0.64999998E+00, 0.00000000E+00, 0.64999998E+00,
301  0.00000000E+00, 0.63999999E+00, 0.00000000E+00, 0.63999999E+00, 0.00000000E+00,
302  0.63000000E+00, 0.00000000E+00, 0.60999995E+00, 0.00000000E+00, 0.58999997E+00,
303  0.00000000E+00, 0.54999995E+00, 0.00000000E+00, 0.38999999E+00, 0.00000000E+00,
304  0.35999995E+00, 0.00000000E+00, 0.39999998E+00, 0.00000000E+00, 0.39999998E+00,
305  0.00000000E+00, 0.39999998E+00, 0.00000000E+00, 0.39999998E+00, 0.00000000E+00,
306  0.39999998E+00, 0.00000000E+00, 0.39999998E+00, 0.00000000E+00, 0.39999998E+00
307  };
308  if ( N > 200 ) throw G4HadronicException(__FILE__, __LINE__, " G4BertiniEvaporationChannel: pairing energy for neutrons called with too large Z " );
309  return table[ N-1 ]*MeV;
310 }
311 
312 
314 {
315  // Gives the binding energy correction depending in Z
316  // due to shell correction and pairing energies in MeV
317  //
318  // see Cameron, Canadian Journal of Physics,
319  // vol. 35, 1957, p.1022
320  G4double table[130] = {
321  0.26169998E+02, 0.19250000E+02, 0.24209991E+02, 0.20919998E+02, 0.23149994E+02,
322  0.18009995E+02, 0.19549988E+02, 0.16939987E+02, 0.19729996E+02, 0.17069992E+02,
323  0.18209991E+02, 0.14990000E+02, 0.16009995E+02, 0.12040000E+02, 0.13270000E+02,
324  0.11089998E+02, 0.12169999E+02, 0.10259998E+02, 0.11040000E+02, 0.84099998E+01,
325  0.97899990E+01, 0.73599997E+01, 0.81499996E+01, 0.56299992E+01, 0.58799992E+01,
326  0.31699991E+01, 0.33199997E+01, 0.81999993E+00, 0.18299999E+01, 0.96999997E+00,
327  0.23299999E+01, 0.12699995E+01, 0.29199991E+01, 0.16099997E+01, 0.29099998E+01,
328  0.13499994E+01, 0.23999996E+01, 0.88999999E+00, 0.17399998E+01, 0.35999995E+00,
329  0.94999999E+00, -0.64999998E+00, -0.39999995E-01, -0.17299995E+01, -0.95999998E+00,
330  -0.28699999E+01, -0.20499992E+01, -0.40499992E+01, -0.33999996E+01, -0.57199993E+01,
331  -0.37499990E+01, -0.41299992E+01, -0.24199991E+01, -0.28499994E+01, -0.10099993E+01,
332  -0.13299990E+01, 0.53999996E+00, -0.20000000E-01, 0.17399998E+01, 0.75000000E+00,
333  0.22399998E+01, 0.99999988E+00, 0.19799995E+01, 0.78999996E+00, 0.15399990E+01,
334  0.38999999E+00, 0.10799999E+01, 0.00000000E+00, 0.77999997E+00, -0.34999996E+00,
335  0.57999998E+00, -0.54999995E+00, 0.58999997E+00, -0.60999995E+00, 0.58999997E+00,
336  -0.34999996E+00, 0.31999993E+00, -0.95999998E+00, -0.51999998E+00, -0.20799999E+01,
337  -0.24599991E+01, -0.36399994E+01, -0.15499992E+01, -0.95999998E+00, 0.96999997E+00,
338  0.88000000E+00, 0.23699999E+01, 0.17500000E+01, 0.27199993E+01, 0.18999996E+01,
339  0.25499992E+01, 0.14599991E+01, 0.19299994E+01, 0.85999995E+00, 0.11699991E+01,
340  0.79999983E-01, 0.38999999E+00, -0.75999999E+00, -0.38999999E+00, -0.15099993E+01,
341  -0.11699991E+01, -0.23599997E+01, -0.19499998E+01, -0.30599995E+01, -0.26199999E+01,
342  -0.35499992E+01, -0.29499998E+01, -0.37499990E+01, -0.30699997E+01, -0.37899990E+01,
343  -0.30599995E+01, -0.37699995E+01, -0.30499992E+01, -0.37799997E+01, -0.31199999E+01,
344  -0.38999996E+01, -0.33499994E+01, -0.42399998E+01, -0.38599997E+01, -0.49199991E+01,
345  -0.50599995E+01, -0.67699995E+01, -0.74099998E+01, -0.91799994E+01, -0.10160000E+02,
346  -0.11120000E+02, -0.97599993E+01, -0.92299995E+01, -0.79599991E+01, -0.76499996E+01,
347  };
348  if ( Z > 130 ) throw G4HadronicException(__FILE__, __LINE__, " G4BertiniEvaporationChannel: shell correction for protons called with too large Z " );
349  return table[ Z-1 ]*MeV;
350 }
351 
352 
354 {
355  // Gives the binding energy correction depending in N
356  // due to shell correction and pairing energies in MeV
357  //
358  // see Cameron, Canadian Journal of Physics,
359  // vol. 35, 1957, p.1022
360  G4double table[200] = {
361  -0.83199997E+01, -0.15899999E+02, -0.11509999E+02, -0.14309999E+02, -0.11570000E+02,
362  -0.15899999E+02, -0.13909999E+02, -0.16029999E+02, -0.12129999E+02, -0.13869999E+02,
363  -0.12249998E+02, -0.14399999E+02, -0.13069999E+02, -0.15799998E+02, -0.13809999E+02,
364  -0.14980000E+02, -0.12629999E+02, -0.13759999E+02, -0.11369999E+02, -0.12379998E+02,
365  -0.92299995E+01, -0.96499996E+01, -0.76399994E+01, -0.91699991E+01, -0.80499992E+01,
366  -0.97199993E+01, -0.88699989E+01, -0.10759999E+02, -0.86399994E+01, -0.88899994E+01,
367  -0.65999994E+01, -0.71299992E+01, -0.47699995E+01, -0.53299990E+01, -0.30599995E+01,
368  -0.37899990E+01, -0.17199993E+01, -0.27899990E+01, -0.92999995E+00, -0.21899996E+01,
369  -0.51999998E+00, -0.18999996E+01, -0.44999999E+00, -0.21999998E+01, -0.12199993E+01,
370  -0.30699997E+01, -0.24199991E+01, -0.43699999E+01, -0.39399996E+01, -0.60799999E+01,
371  -0.44899998E+01, -0.45000000E+01, -0.31399994E+01, -0.29299994E+01, -0.10399990E+01,
372  -0.13599997E+01, 0.69000000E+00, 0.20999998E+00, 0.21099997E+01, 0.13299990E+01,
373  0.32900000E+01, 0.24599991E+01, 0.42999992E+01, 0.33199997E+01, 0.47899990E+01,
374  0.36199999E+01, 0.49699993E+01, 0.36399994E+01, 0.46299992E+01, 0.30699997E+01,
375  0.40599995E+01, 0.24899998E+01, 0.32999992E+01, 0.14599991E+01, 0.20599995E+01,
376  0.50999999E+00, 0.73999995E+00, -0.11799994E+01, -0.12599993E+01, -0.35399990E+01,
377  -0.39699993E+01, -0.52599993E+01, -0.41799994E+01, -0.37099991E+01, -0.20999994E+01,
378  -0.16999998E+01, -0.79999983E-01, -0.17999995E+00, 0.94000000E+00, 0.26999998E+00,
379  0.11299992E+01, 0.79999983E-01, 0.90999997E+00, -0.30999994E+00, 0.48999995E+00,
380  -0.77999997E+00, 0.79999983E-01, -0.11499996E+01, -0.22999996E+00, -0.14099998E+01,
381  -0.41999996E+00, -0.15499992E+01, -0.54999995E+00, -0.16599998E+01, -0.65999997E+00,
382  -0.17299995E+01, -0.75000000E+00, -0.17399998E+01, -0.77999997E+00, -0.16899996E+01,
383  -0.77999997E+00, -0.15999994E+01, -0.75000000E+00, -0.14599991E+01, -0.66999996E+00,
384  -0.12599993E+01, -0.50999999E+00, -0.10399990E+01, -0.52999997E+00, -0.18399992E+01,
385  -0.24199991E+01, -0.45199995E+01, -0.47599993E+01, -0.63299990E+01, -0.67599993E+01,
386  -0.78099995E+01, -0.57999992E+01, -0.53699999E+01, -0.36299992E+01, -0.33499994E+01,
387  -0.17500000E+01, -0.18799992E+01, -0.60999995E+00, -0.89999998E+00, 0.89999974E-01,
388  -0.31999993E+00, 0.54999995E+00, -0.13000000E+00, 0.69999999E+00, -0.59999999E-01,
389  0.48999995E+00, -0.19999999E+00, 0.39999998E+00, -0.21999997E+00, 0.35999995E+00,
390  -0.89999974E-01, 0.57999998E+00, 0.11999995E+00, 0.75000000E+00, 0.14999998E+00,
391  0.69999999E+00, 0.16999996E+00, 0.11099997E+01, 0.88999999E+00, 0.18499994E+01,
392  0.16199999E+01, 0.25399990E+01, 0.22899990E+01, 0.31999998E+01, 0.29099998E+01,
393  0.38399992E+01, 0.35299997E+01, 0.44799995E+01, 0.41499996E+01, 0.51199999E+01,
394  0.47799997E+01, 0.57500000E+01, 0.53899994E+01, 0.63099995E+01, 0.59099998E+01,
395  0.68699999E+01, 0.63299990E+01, 0.71299992E+01, 0.66099997E+01, 0.72999992E+01,
396  0.63099995E+01, 0.62699995E+01, 0.48299999E+01, 0.44899998E+01, 0.28499994E+01,
397  0.23199997E+01, 0.57999998E+00, -0.10999995E+00, -0.97999996E+00, 0.80999994E+00,
398  0.17699995E+01, 0.33699999E+01, 0.41299992E+01, 0.55999994E+01, 0.61499996E+01,
399  0.72899990E+01, 0.73499994E+01, 0.79499998E+01, 0.76699991E+01, 0.81599998E+01,
400  0.78299990E+01, 0.83099995E+01, 0.80099993E+01, 0.85299997E+01, 0.82699995E+01
401  };
402  if ( N > 130 ) throw G4HadronicException(__FILE__, __LINE__, " G4BertiniEvaporationChannel: shell correction for protons called with too large N " );
403  return table[ N-1 ]*MeV;
404 }
405