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25 //
26 //
27 //
28 // G4InitXscPAI.cc -- class implementation fil
29 //
30 // GEANT 4 class implementation file
31 //
32 // For information related to this code, pleas
33 // the Geant4 Collaboration.
34 //
35 // R&D: Vladimir.Grichine@cern.ch
36 //
37 // History:
38 //
39
40
41
42 #include "G4InitXscPAI.hh"
43
44 #include "globals.hh"
45 #include "G4PhysicalConstants.hh"
46 #include "G4SystemOfUnits.hh"
47 #include "G4ios.hh"
48 #include "G4Poisson.hh"
49 #include "G4Integrator.hh"
50 #include "G4Material.hh"
51 #include "G4MaterialCutsCouple.hh"
52 #include "G4SandiaTable.hh"
53
54
55
56 // Local class constants
57
58 const G4double G4InitXscPAI::fDelta = 0
59 const G4int G4InitXscPAI::fPAIbin = 1
60 const G4double G4InitXscPAI::fSolidDensity = 0
61
62 //////////////////////////////////////////////
63 //
64 // Constructor
65 //
66
67 using namespace std;
68
69 G4InitXscPAI::G4InitXscPAI( const G4MaterialCu
70 : fPAIxscVector(nullptr),
71 fPAIdEdxVector(nullptr),
72 fPAIphotonVector(nullptr),
73 fPAIelectronVector(nullptr),
74 fChCosSqVector(nullptr),
75 fChWidthVector(nullptr)
76 {
77 G4int i, j, matIndex;
78
79 fDensity = matCC->GetMaterial()->Get
80 fElectronDensity = matCC->GetMaterial()->Get
81 matIndex = (G4int)matCC->GetMaterial
82
83 fSandia = new G4SandiaTable(matInde
84 fIntervalNumber = fSandia->GetMaxInterval()
85
86 fMatSandiaMatrix = new G4OrderedTable();
87
88 for (i = 0; i < fIntervalNumber; ++i)
89 {
90 fMatSandiaMatrix->push_back(new G4DataVect
91 }
92 for (i = 0; i < fIntervalNumber; ++i)
93 {
94 (*(*fMatSandiaMatrix)[i])[0] = fSandia->Ge
95
96 for(j = 1; j < 5 ; ++j)
97 {
98 (*(*fMatSandiaMatrix)[i])[j] = fSandia->
99 }
100 }
101 KillCloseIntervals();
102 Normalisation();
103 fBetaGammaSq = fTmax = 0.0;
104 fIntervalTmax = fCurrentInterval = 0;
105 }
106
107
108
109
110 //////////////////////////////////////////////
111 //
112 // Destructor
113
114 G4InitXscPAI::~G4InitXscPAI()
115 {
116 delete fPAIxscVector;
117 delete fPAIdEdxVector;
118 delete fPAIphotonVector;
119 delete fPAIelectronVector;
120 delete fChCosSqVector;
121 delete fChWidthVector;
122 delete fSandia;
123 delete fMatSandiaMatrix;
124 }
125
126 //////////////////////////////////////////////
127 //
128 // Kill close intervals, recalculate fInterval
129
130 void G4InitXscPAI::KillCloseIntervals()
131 {
132 G4int i, j, k;
133 G4double energy1, energy2;
134
135 for( i = 0 ; i < fIntervalNumber - 1 ; i++ )
136 {
137 energy1 = (*(*fMatSandiaMatrix)[i])[0];
138 energy2 = (*(*fMatSandiaMatrix)[i+1])[0];
139
140 if( energy2 - energy1 > 1.5*fDelta*(energy
141 else
142 {
143 for(j = i; j < fIntervalNumber-1; j++)
144 {
145 for( k = 0; k < 5; k++ )
146 {
147 (*(*fMatSandiaMatrix)[j])[k] = (*(*f
148 }
149 }
150 fIntervalNumber-- ;
151 i-- ;
152 }
153 }
154
155 }
156
157 //////////////////////////////////////////////
158 //
159 // Kill close intervals, recalculate fInterval
160
161 void G4InitXscPAI::Normalisation()
162 {
163 G4int i, j;
164 G4double energy1, energy2, /*delta,*/ cof; /
165
166 energy1 = (*(*fMatSandiaMatrix)[fIntervalNum
167 energy2 = 2.*(*(*fMatSandiaMatrix)[fInterval
168
169
170 cof = RutherfordIntegral(fIntervalNumber-1,e
171
172 for( i = fIntervalNumber-2; i >= 0; i-- )
173 {
174 energy1 = (*(*fMatSandiaMatrix)[i])[0];
175 energy2 = (*(*fMatSandiaMatrix)[i+1])[0];
176
177 cof += RutherfordIntegral(i,energy1,energy
178 // G4cout<<"norm. cof = "<<cof<<G4endl;
179 }
180 fNormalizationCof = 2*pi*pi*hbarc*hbarc*fin
181 fNormalizationCof *= fElectronDensity;
182 //delta = fNormalizationCof - cof;
183 fNormalizationCof /= cof;
184 // G4cout<<"G4InitXscPAI::fNormalizationCof
185 // <<"; at delta ="<<delta<<G4endl ;
186
187 for (i = 0; i < fIntervalNumber; i++) // ren
188 {
189 for(j = 1; j < 5 ; j++)
190 {
191 (*(*fMatSandiaMatrix)[i])[j] *= fNormali
192 }
193 }
194 /*
195 if(delta > 0) // shift the first energy inte
196 {
197 for(i=1;i<100;i++)
198 {
199 energy1 = (1.-i/100.)*(*(*fMatSandiaMatr
200 energy2 = (*(*fMatSandiaMatrix)[0])[0];
201 shift = RutherfordIntegral(0,energy1,e
202 G4cout<<shift<<"\t";
203 if(shift >= delta) break;
204 }
205 (*(*fMatSandiaMatrix)[0])[0] = energy1;
206 cof += shift;
207 }
208 else if(delta < 0)
209 {
210 for(i=1;i<100;i++)
211 {
212 energy1 = (*(*fMatSandiaMatrix)[0])[0];
213 energy2 = (*(*fMatSandiaMatrix)[0])[0] +
214 ( (*(*fMatSandiaMatrix)[0])[0] -
215 shift = RutherfordIntegral(0,energy1,e
216 if( shift >= std::abs(delta) ) break;
217 }
218 (*(*fMatSandiaMatrix)[0])[0] = energy2;
219 cof -= shift;
220 }
221 G4cout<<G4cout<<"G4InitXscPAI::fNormalizatio
222 <<"; at delta ="<<delta<<" and i = "
223 */
224 }
225
226 //////////////////////////////////////////////
227 //
228 // Integration over electrons that could be co
229 // quasi-free at energy transfer of interest
230
231 G4double G4InitXscPAI::RutherfordIntegral( G4i
232 G4double x1,
233 G4double x2 )
234 {
235 G4double c1, c2, c3, a1, a2, a3, a4 ;
236
237 a1 = (*(*fMatSandiaMatrix)[k])[1];
238 a2 = (*(*fMatSandiaMatrix)[k])[2];
239 a3 = (*(*fMatSandiaMatrix)[k])[3];
240 a4 = (*(*fMatSandiaMatrix)[k])[4];
241 // G4cout<<"RI: x1 = "<<x1<<"; "<<"x2 = "<<
242 c1 = (x2 - x1)/x1/x2 ;
243 c2 = (x2 - x1)*(x2 + x1)/x1/x1/x2/x2 ;
244 c3 = (x2 - x1)*(x1*x1 + x1*x2 + x2*x2)/x1/x
245 // G4cout<<" RI: c1 = "<<c1<<"; "<<"c2 = "<
246
247 return a1*log(x2/x1) + a2*c1 + a3*c2/2 + a
248
249 } // end of RutherfordIntegral
250
251 //////////////////////////////////////////////
252 //
253 // Integrate photo-absorption cross-section f
254
255 G4double G4InitXscPAI::IntegralTerm(G4double o
256 {
257 G4int i;
258 G4double energy1, energy2, result = 0.;
259
260 for( i = 0; i <= fIntervalTmax; i++ )
261 {
262 if(i == fIntervalTmax)
263 {
264 energy1 = (*(*fMatSandiaMatrix)[i])[0];
265 result += RutherfordIntegral(i,energy1,o
266 }
267 else
268 {
269 if( omega <= (*(*fMatSandiaMatrix)[i+1])
270 {
271 energy1 = (*(*fMatSandiaMatrix)[i])[0]
272 result += RutherfordIntegral(i,energy1
273 break;
274 }
275 else
276 {
277 energy1 = (*(*fMatSandiaMatrix)[i])[0]
278 energy2 = (*(*fMatSandiaMatrix)[i+1])[
279 result += RutherfordIntegral(i,energy1
280 }
281 }
282 // G4cout<<"IntegralTerm<<"("<<omega<<")"<
283 }
284 return result;
285 }
286
287
288 //////////////////////////////////////////////
289 //
290 // Imaginary part of dielectric constant
291 // (G4int k - interval number, G4double en1 -
292
293 G4double G4InitXscPAI::ImPartDielectricConst(
294 G4double energy1
295 {
296 G4double energy2,energy3,energy4,a1,a2,a3,a
297
298 a1 = (*(*fMatSandiaMatrix)[k])[1];
299 a2 = (*(*fMatSandiaMatrix)[k])[2];
300 a3 = (*(*fMatSandiaMatrix)[k])[3];
301 a4 = (*(*fMatSandiaMatrix)[k])[4];
302
303 energy2 = energy1*energy1;
304 energy3 = energy2*energy1;
305 energy4 = energy3*energy1;
306
307 result = a1/energy1+a2/energy2+a3/energy3+
308 result *= hbarc/energy1 ;
309
310 return result ;
311
312 } // end of ImPartDielectricConst
313
314 //////////////////////////////////////////////
315 //
316 // Modulus squared of dielectric constant
317 // (G4int k - interval number, G4double omega
318
319 G4double G4InitXscPAI::ModuleSqDielectricConst
320 G4double omega )
321 {
322 G4double eIm2, eRe2, result;
323
324 result = ImPartDielectricConst(k,omega);
325 eIm2 = result*result;
326
327 result = RePartDielectricConst(omega);
328 eRe2 = result*result;
329
330 result = eIm2 + eRe2;
331
332 return result ;
333 }
334
335
336 //////////////////////////////////////////////
337 //
338 // Real part of dielectric constant minus unit
339 // (G4double enb - energy point)
340 //
341
342 G4double G4InitXscPAI::RePartDielectricConst(G
343 {
344 G4int i;
345 G4double x0, x02, x03, x04, x05, x1, x2, a1
346 c1, c2, c3, cof1, cof2, xln1, xln2
347
348 x0 = enb ;
349 result = 0 ;
350
351 for( i = 0; i < fIntervalNumber-1; i++)
352 {
353 x1 = (*(*fMatSandiaMatrix)[i])[0];
354 x2 = (*(*fMatSandiaMatrix)[i+1])[0] ;
355
356 a1 = (*(*fMatSandiaMatrix)[i])[1];
357 a2 = (*(*fMatSandiaMatrix)[i])[2];
358 a3 = (*(*fMatSandiaMatrix)[i])[3];
359 a4 = (*(*fMatSandiaMatrix)[i])[4];
360
361 if( std::abs(x0-x1) < 0.5*(x0+x1)*fDelta
362 {
363 if(x0 >= x1) x0 = x1*(1+fDelta);
364 else x0 = x1*(1-fDelta);
365 }
366 if( std::abs(x0-x2) < 0.5*(x0+x2)*fDelta
367 {
368 if(x0 >= x2) x0 = x2*(1+fDelta);
369 else x0 = x2*(1-fDelta);
370 }
371 xx1 = x1 - x0 ;
372 xx2 = x2 - x0 ;
373 xx12 = xx2/xx1 ;
374
375 if( xx12 < 0 ) xx12 = -xx12;
376
377 xln1 = log(x2/x1) ;
378 xln2 = log(xx12) ;
379 xln3 = log((x2 + x0)/(x1 + x0)) ;
380
381 x02 = x0*x0 ;
382 x03 = x02*x0 ;
383 x04 = x03*x0 ;
384 x05 = x04*x0;
385
386 c1 = (x2 - x1)/x1/x2 ;
387 c2 = (x2 - x1)*(x2 +x1)/x1/x1/x2/x2 ;
388 c3 = (x2 -x1)*(x1*x1 + x1*x2 + x2*x2)/x
389
390 result -= (a1/x02 + a3/x04)*xln1 ;
391 result -= (a2/x02 + a4/x04)*c1 ;
392 result -= a3*c2/2/x02 ;
393 result -= a4*c3/3/x02 ;
394
395 cof1 = a1/x02 + a3/x04 ;
396 cof2 = a2/x03 + a4/x05 ;
397
398 result += 0.5*(cof1 +cof2)*xln2 ;
399 result += 0.5*(cof1 - cof2)*xln3 ;
400 }
401 result *= 2*hbarc/pi ;
402
403 return result ;
404
405 } // end of RePartDielectricConst
406
407 //////////////////////////////////////////////
408 //
409 // PAI differential cross-section in terms of
410 // simplified Allison's equation
411 //
412
413 G4double G4InitXscPAI::DifPAIxSection( G4doubl
414 {
415 G4int i = fCurrentInterval;
416 G4double betaGammaSq = fBetaGammaSq;
417 G4double integralTerm = IntegralTerm(omega);
418 G4double be2,cof,x1,x2,x3,x4,x5,x6,x7,x8,res
419 G4double epsilonRe = RePartDielectricConst(o
420 G4double epsilonIm = ImPartDielectricConst(i
421 G4double be4 ;
422 static const G4double betaBohr2 = fine_struc
423 static const G4double betaBohr4 = betaBohr2*
424 be2 = betaGammaSq/(1 + betaGammaSq) ;
425 be4 = be2*be2 ;
426
427 cof = 1 ;
428 x1 = log(2*electron_mass_c2/omega) ;
429
430 if( betaGammaSq < 0.01 ) x2 = log(be2) ;
431 else
432 {
433 x2 = -log( (1/betaGammaSq - epsilonRe)*
434 (1/betaGammaSq - epsilonRe) +
435 epsilonIm*epsilonIm )/2 ;
436 }
437 if( epsilonIm == 0.0 || betaGammaSq < 0.01
438 {
439 x6=0 ;
440 }
441 else
442 {
443 x3 = -epsilonRe + 1/betaGammaSq ;
444 x5 = -1 - epsilonRe + be2*((1 +epsilonRe)
445 epsilonIm*epsilonIm) ;
446
447 x7 = atan2(epsilonIm,x3) ;
448 x6 = x5 * x7 ;
449 }
450 // if(fImPartDielectricConst[i] == 0) x6 =
451
452 x4 = ((x1 + x2)*epsilonIm + x6)/hbarc ;
453 // if( x4 < 0.0 ) x4 = 0.0 ;
454 x8 = (1 + epsilonRe)*(1 + epsilonRe) +
455 epsilonIm*epsilonIm;
456
457 result = (x4 + cof*integralTerm/omega/omega
458 if(result < 1.0e-8) result = 1.0e-8 ;
459 result *= fine_structure_const/be2/pi ;
460 // result *= (1-exp(-beta/betaBohr))*(1-e
461 // result *= (1-exp(-be2/betaBohr2)) ;
462 result *= (1-exp(-be4/betaBohr4)) ;
463 if(fDensity >= fSolidDensity)
464 {
465 result /= x8 ;
466 }
467 return result ;
468
469 } // end of DifPAIxSection
470
471 //////////////////////////////////////////////
472 //
473 // Differential PAI dEdx(omega)=omega*dNdx(ome
474 //
475
476 G4double G4InitXscPAI::DifPAIdEdx( G4double om
477 {
478 G4double dEdx = omega*DifPAIxSection(omega);
479 return dEdx;
480 }
481
482 //////////////////////////////////////////////
483 //
484 // Calculation od dN/dx of collisions with cre
485
486 G4double G4InitXscPAI::PAIdNdxCherenkov( G4dou
487 {
488 G4int i = fCurrentInterval;
489 G4double betaGammaSq = fBetaGammaSq;
490 G4double epsilonRe = RePartDielectricConst(o
491 G4double epsilonIm = ImPartDielectricConst(i
492
493 G4double /*cof,*/ logarithm, x3, x5, argumen
494 G4double be2, be4;
495
496 //cof = 1.0 ;
497 static const G4double cofBetaBohr = 4.0 ;
498 static const G4double betaBohr2 = fine_str
499 static const G4double betaBohr4 = betaBohr
500
501 be2 = betaGammaSq/(1 + betaGammaSq) ;
502 be4 = be2*be2 ;
503
504 if( betaGammaSq < 0.01 ) logarithm = log(1.
505 else
506 {
507 logarithm = -log( (1/betaGammaSq - epsil
508 (1/betaGammaSq - epsilonRe)
509 epsilonIm*epsilonIm )*0.5 ;
510 logarithm += log(1+1.0/betaGammaSq) ;
511 }
512
513 if( epsilonIm == 0.0 || betaGammaSq < 0.01
514 {
515 argument = 0.0 ;
516 }
517 else
518 {
519 x3 = -epsilonRe + 1.0/betaGammaSq ;
520 x5 = -1.0 - epsilonRe +
521 be2*((1.0 +epsilonRe)*(1.0 + epsilon
522 epsilonIm*epsilonIm) ;
523 if( x3 == 0.0 ) argument = 0.5*pi;
524 else argument = atan2(epsilonI
525 argument *= x5 ;
526 }
527 dNdxC = ( logarithm*epsilonIm + argument )/
528
529 if(dNdxC < 1.0e-8) dNdxC = 1.0e-8 ;
530
531 dNdxC *= fine_structure_const/be2/pi ;
532
533 dNdxC *= (1-exp(-be4/betaBohr4)) ;
534
535 if(fDensity >= fSolidDensity)
536 {
537 modul2 = (1.0 + epsilonRe)*(1.0 + epsilo
538 epsilonIm*epsilonIm;
539 dNdxC /= modul2 ;
540 }
541 return dNdxC ;
542
543 } // end of PAIdNdxCerenkov
544
545 //////////////////////////////////////////////
546 //
547 // Calculation od dN/dx of collisions with cre
548 // excitations (plasmons, delta-electrons)
549
550 G4double G4InitXscPAI::PAIdNdxPlasmon( G4doubl
551 {
552 G4int i = fCurrentInterval;
553 G4double betaGammaSq = fBetaGammaSq;
554 G4double integralTerm = IntegralTerm(omega);
555 G4double epsilonRe = RePartDielectricConst(o
556 G4double epsilonIm = ImPartDielectricConst(i
557
558 G4double cof, resonance, modul2, dNdxP ;
559 G4double be2, be4;
560
561 cof = 1 ;
562 static const G4double cofBetaBohr = 4.0 ;
563 static const G4double betaBohr2 = fine_st
564 static const G4double betaBohr4 = betaBoh
565
566 be2 = betaGammaSq/(1 + betaGammaSq) ;
567 be4 = be2*be2 ;
568
569 resonance = log(2*electron_mass_c2*be2/ome
570 resonance *= epsilonIm/hbarc ;
571
572
573 dNdxP = ( resonance + cof*integralTerm/omeg
574
575 if( dNdxP < 1.0e-8 ) dNdxP = 1.0e-8 ;
576
577 dNdxP *= fine_structure_const/be2/pi ;
578 dNdxP *= (1-exp(-be4/betaBohr4)) ;
579
580 if( fDensity >= fSolidDensity )
581 {
582 modul2 = (1 + epsilonRe)*(1 + epsilonRe)
583 epsilonIm*epsilonIm;
584 dNdxP /= modul2 ;
585 }
586 return dNdxP ;
587
588 } // end of PAIdNdxPlasmon
589
590 //////////////////////////////////////////////
591 //
592 // Calculation of the PAI integral cross-secti
593 // = specific primary ionisation, 1/cm
594 //
595
596 void G4InitXscPAI::IntegralPAIxSection(G4doubl
597 {
598 G4int i,k,i1,i2;
599 G4double energy1, energy2, result = 0.;
600
601 fBetaGammaSq = bg2;
602 fTmax = Tmax;
603
604 delete fPAIxscVector;
605
606 fPAIxscVector = new G4PhysicsLogVector( (*(*
607 fPAIxscVector->PutValue(fPAIbin-1,result);
608
609 for( i = fIntervalNumber - 1; i >= 0; i-- )
610 {
611 if( Tmax >= (*(*fMatSandiaMatrix)[i])[0] )
612 }
613 if (i < 0) i = 0; // Tmax should be more tha
614 // first ionisation potent
615 fIntervalTmax = i;
616
617 G4Integrator<G4InitXscPAI,G4double(G4InitXsc
618
619 for( k = fPAIbin - 2; k >= 0; k-- )
620 {
621 energy1 = fPAIxscVector->GetLowEdgeEnergy(
622 energy2 = fPAIxscVector->GetLowEdgeEnergy(
623
624 for( i = fIntervalTmax; i >= 0; i-- )
625 {
626 if( energy2 > (*(*fMatSandiaMatrix)[i])[
627 }
628 if(i < 0) i = 0;
629 i2 = i;
630
631 for( i = fIntervalTmax; i >= 0; i-- )
632 {
633 if( energy1 > (*(*fMatSandiaMatrix)[i])[
634 }
635 if(i < 0) i = 0;
636 i1 = i;
637
638 if( i1 == i2 )
639 {
640 fCurrentInterval = i1;
641 result += integral.Legendre10(this,&G4In
642 energy1,en
643 fPAIxscVector->PutValue(k,result);
644 }
645 else
646 {
647 for( i = i2; i >= i1; i-- )
648 {
649 fCurrentInterval = i;
650
651 if( i==i2 ) result += integral.
652 &G4InitXscPAI::DifP
653 (*(*fMatSandiaMatri
654
655 else if( i == i1 ) result += integral.Legend
656 &G4InitXscPAI::DifP
657 (*(*fMatSandiaMatri
658
659 else result += integral.
660 &G4InitXscPAI::DifP
661 (*(*fMatSandiaMatrix)[i
662 }
663 fPAIxscVector->PutValue(k,result);
664 }
665 // G4cout<<k<<"\t"<<result<<G4endl;
666 }
667 return ;
668 }
669
670
671 //////////////////////////////////////////////
672 //
673 // Calculation of the PAI integral dEdx
674 // = mean energy loss per unit length, keV/cm
675 //
676
677 void G4InitXscPAI::IntegralPAIdEdx(G4double bg
678 {
679 G4int i,k,i1,i2;
680 G4double energy1, energy2, result = 0.;
681
682 fBetaGammaSq = bg2;
683 fTmax = Tmax;
684
685 delete fPAIdEdxVector;
686
687 fPAIdEdxVector = new G4PhysicsLogVector( (*(
688 fPAIdEdxVector->PutValue(fPAIbin-1,result);
689
690 for( i = fIntervalNumber - 1; i >= 0; i-- )
691 {
692 if( Tmax >= (*(*fMatSandiaMatrix)[i])[0] )
693 }
694 if (i < 0) i = 0; // Tmax should be more tha
695 // first ionisation potent
696 fIntervalTmax = i;
697
698 G4Integrator<G4InitXscPAI,G4double(G4InitXsc
699
700 for( k = fPAIbin - 2; k >= 0; k-- )
701 {
702 energy1 = fPAIdEdxVector->GetLowEdgeEnergy
703 energy2 = fPAIdEdxVector->GetLowEdgeEnergy
704
705 for( i = fIntervalTmax; i >= 0; i-- )
706 {
707 if( energy2 > (*(*fMatSandiaMatrix)[i])[
708 }
709 if(i < 0) i = 0;
710 i2 = i;
711
712 for( i = fIntervalTmax; i >= 0; i-- )
713 {
714 if( energy1 > (*(*fMatSandiaMatrix)[i])[
715 }
716 if(i < 0) i = 0;
717 i1 = i;
718
719 if( i1 == i2 )
720 {
721 fCurrentInterval = i1;
722 result += integral.Legendre10(this,&G4In
723 energy1,en
724 fPAIdEdxVector->PutValue(k,result);
725 }
726 else
727 {
728 for( i = i2; i >= i1; i-- )
729 {
730 fCurrentInterval = i;
731
732 if( i==i2 ) result += integral.
733 &G4InitXscPAI::DifP
734 (*(*fMatSandiaMatri
735
736 else if( i == i1 ) result += integral.Legend
737 &G4InitXscPAI::DifP
738 (*(*fMatSandiaMatri
739
740 else result += integral.
741 &G4InitXscPAI::DifP
742 (*(*fMatSandiaMatrix)[i
743 }
744 fPAIdEdxVector->PutValue(k,result);
745 }
746 // G4cout<<k<<"\t"<<result<<G4endl;
747 }
748 return ;
749 }
750
751 //////////////////////////////////////////////
752 //
753 // Calculation of the PAI Cerenkov integral cr
754 // fIntegralCrenkov[1] = specific Crenkov ioni
755 // and fIntegralCerenkov[0] = mean Cerenkov lo
756
757 void G4InitXscPAI::IntegralCherenkov(G4double
758 {
759 G4int i,k,i1,i2;
760 G4double energy1, energy2, beta2, module2, c
761
762 fBetaGammaSq = bg2;
763 fTmax = Tmax;
764 beta2 = bg2/(1+bg2);
765
766 delete fPAIphotonVector;
767 delete fChCosSqVector;
768 delete fChWidthVector;
769
770 fPAIphotonVector = new G4PhysicsLogVector( (
771 fChCosSqVector = new G4PhysicsLogVector( (*(
772 fChWidthVector = new G4PhysicsLogVector( (*(
773
774 fPAIphotonVector->PutValue(fPAIbin-1,result)
775 fChCosSqVector->PutValue(fPAIbin-1,1.);
776 fChWidthVector->PutValue(fPAIbin-1,1e-7);
777
778 for( i = fIntervalNumber - 1; i >= 0; i-- )
779 {
780 if( Tmax >= (*(*fMatSandiaMatrix)[i])[0] )
781 }
782 if (i < 0) i = 0; // Tmax should be more tha
783 // first ionisation potent
784 fIntervalTmax = i;
785
786 G4Integrator<G4InitXscPAI,G4double(G4InitXsc
787
788 for( k = fPAIbin - 2; k >= 0; k-- )
789 {
790 energy1 = fPAIphotonVector->GetLowEdgeEner
791 energy2 = fPAIphotonVector->GetLowEdgeEner
792
793 for( i = fIntervalTmax; i >= 0; i-- )
794 {
795 if( energy2 > (*(*fMatSandiaMatrix)[i])[
796 }
797 if(i < 0) i = 0;
798 i2 = i;
799
800 for( i = fIntervalTmax; i >= 0; i-- )
801 {
802 if( energy1 > (*(*fMatSandiaMatrix)[i])[
803 }
804 if(i < 0) i = 0;
805 i1 = i;
806
807 module2 = ModuleSqDielectricConst(i1,energ
808 cos2 = RePartDielectricConst(energy1)/m
809 width = ImPartDielectricConst(i1,energy1
810
811 fChCosSqVector->PutValue(k,cos2);
812 fChWidthVector->PutValue(k,width);
813
814 if( i1 == i2 )
815 {
816 fCurrentInterval = i1;
817 result += integral.Legendre10(this,&G4In
818 energy1,en
819 fPAIphotonVector->PutValue(k,result);
820
821 }
822 else
823 {
824 for( i = i2; i >= i1; i-- )
825 {
826 fCurrentInterval = i;
827
828 if( i==i2 ) result += integral.
829 &G4InitXscPAI::PAId
830 (*(*fMatSandiaMatri
831
832 else if( i == i1 ) result += integral.Legend
833 &G4InitXscPAI::PAId
834 (*(*fMatSandiaMatri
835
836 else result += integral.
837 &G4InitXscPAI::PAId
838 (*(*fMatSandiaMatrix)[i
839 }
840 fPAIphotonVector->PutValue(k,result);
841 }
842 // G4cout<<k<<"\t"<<result<<G4endl;
843 }
844 return;
845 } // end of IntegralCerenkov
846
847 //////////////////////////////////////////////
848 //
849 // Calculation of the PAI Plasmon integral cro
850 // fIntegralPlasmon[1] = splasmon primary ioni
851 // and fIntegralPlasmon[0] = mean plasmon loss
852
853 void G4InitXscPAI::IntegralPlasmon(G4double bg
854 {
855 G4int i,k,i1,i2;
856 G4double energy1, energy2, result = 0.;
857
858 fBetaGammaSq = bg2;
859 fTmax = Tmax;
860
861 delete fPAIelectronVector;
862
863 fPAIelectronVector = new G4PhysicsLogVector(
864 fPAIelectronVector->PutValue(fPAIbin-1,resul
865
866 for( i = fIntervalNumber - 1; i >= 0; i-- )
867 {
868 if( Tmax >= (*(*fMatSandiaMatrix)[i])[0] )
869 }
870 if (i < 0) i = 0; // Tmax should be more tha
871 // first ionisation potent
872 fIntervalTmax = i;
873
874 G4Integrator<G4InitXscPAI,G4double(G4InitXsc
875
876 for( k = fPAIbin - 2; k >= 0; k-- )
877 {
878 energy1 = fPAIelectronVector->GetLowEdgeEn
879 energy2 = fPAIelectronVector->GetLowEdgeEn
880
881 for( i = fIntervalTmax; i >= 0; i-- )
882 {
883 if( energy2 > (*(*fMatSandiaMatrix)[i])[
884 }
885 if(i < 0) i = 0;
886 i2 = i;
887
888 for( i = fIntervalTmax; i >= 0; i-- )
889 {
890 if( energy1 > (*(*fMatSandiaMatrix)[i])[
891 }
892 if(i < 0) i = 0;
893 i1 = i;
894
895 if( i1 == i2 )
896 {
897 fCurrentInterval = i1;
898 result += integral.Legendre10(this,&G4In
899 energy1,en
900 fPAIelectronVector->PutValue(k,result);
901 }
902 else
903 {
904 for( i = i2; i >= i1; i-- )
905 {
906 fCurrentInterval = i;
907
908 if( i==i2 ) result += integral.
909 &G4InitXscPAI::PAId
910 (*(*fMatSandiaMatri
911
912 else if( i == i1 ) result += integral.Legend
913 &G4InitXscPAI::PAId
914 (*(*fMatSandiaMatri
915
916 else result += integral.
917 &G4InitXscPAI::PAId
918 (*(*fMatSandiaMatrix)[i
919 }
920 fPAIelectronVector->PutValue(k,result);
921 }
922 // G4cout<<k<<"\t"<<result<<G4endl;
923 }
924 return;
925 } // end of IntegralPlasmon
926
927
928 //////////////////////////////////////////////
929 //
930 //
931
932 G4double G4InitXscPAI::GetPhotonLambda( G4doub
933 {
934 G4int i ;
935 G4double omega2, omega3, omega4, a1, a2, a3,
936
937 omega2 = omega*omega ;
938 omega3 = omega2*omega ;
939 omega4 = omega2*omega2 ;
940
941 for(i = 0; i < fIntervalNumber;i++)
942 {
943 if( omega < (*(*fMatSandiaMatrix)[i])[0] )
944 }
945 if( i == 0 )
946 {
947 G4cout<<"Warning: energy in G4InitXscPAI::
948 }
949 else i-- ;
950
951 a1 = (*(*fMatSandiaMatrix)[i])[1];
952 a2 = (*(*fMatSandiaMatrix)[i])[2];
953 a3 = (*(*fMatSandiaMatrix)[i])[3];
954 a4 = (*(*fMatSandiaMatrix)[i])[4];
955
956 lambda = 1./(a1/omega + a2/omega2 + a3/omega
957
958 return lambda ;
959 }
960
961 //////////////////////////////////////////////
962 //
963 //
964
965 //////////////////////////////////////////////
966 //
967 //
968
969 G4double G4InitXscPAI::GetStepEnergyLoss( G4do
970 {
971 G4double loss = 0.0 ;
972 loss *= step;
973
974 return loss ;
975 }
976
977 //////////////////////////////////////////////
978 //
979 //
980
981 G4double G4InitXscPAI::GetStepCerenkovLoss( G4
982 {
983 G4double loss = 0.0 ;
984 loss *= step;
985
986 return loss ;
987 }
988
989 //////////////////////////////////////////////
990 //
991 //
992
993 G4double G4InitXscPAI::GetStepPlasmonLoss( G4d
994 {
995
996
997 G4double loss = 0.0 ;
998 loss *= step;
999 return loss ;
1000 }
1001
1002
1003 //
1004 // end of G4InitXscPAI implementation file
1005 //
1006 /////////////////////////////////////////////
1007
1008