4 * this program tries helping to understand the amorphous depuration
5 * and recrystallization of SiCx while ion implanation. hopefully the program
6 * will simulate the stabilization of the selforganizing structure in the
10 * - J. K. N. Lindner. Habilationsschrift, Universitaet Augsburg.
11 * - Maik Haeberlen. Diplomarbeit, Universitaet Augsburg.
17 #include <sys/types.h>
21 /* important defines */
24 /* function prototypes */
28 /* global variables */
31 int random_fd; /* /dev/urandom file descriptor */
37 puts("-a <value> \t slope of nuclear energy loss (default 1)");
38 puts("-c <value> \t nuclear enery loss at depths 0 (default 0)");
39 puts("-x <value> \t # x cells (default 50)");
40 puts("-y <value> \t # y cells (default 50)");
41 puts("-z <value> \t # z cells (default 100)");
42 puts("-s <value> \t # steps to calculate (default 5000)");
43 puts("-X <value> \t display area intercept point x (default # x celss / 2)");
44 puts("-Y <value> \t display area intercept point y (default # y cells / 2)");
45 puts("-Z <value> \t display area intercept point z (default # z cells / 2)");
46 puts("-d <value> \t refresh every <value> loops (default 100)");
47 puts("-r <value> \t pressure range from amorphous SiCx (default 2)");
48 puts("-f <value> \t faktor for pressure from amorphous SiCx (default 0.2)");
49 puts("-p <value> \t p0 for probability of cell getting amorph (default 0.2)");
53 int make_amorph(u32 *cell)
59 int make_cryst(u32 *cell)
65 /* look at cell ... */
66 int process_cell(void *cell_p,u32 x,u32 y,u32 z,u32 x_max,u32 y_max,u32 z_max,int range,int faktor,int p0)
72 cell=(u32 *)(cell_p+x+y*(x_max-1)+z*(x_max-1)*(y_max-1));
74 for(i=-range;i<=range;i++)
76 for(j=-range;j<=range;j++)
78 for(k=-range;k<=range;k++)
80 if(!(i==0 && j==0 && k==0))
82 if(*(u32 *)(cell_p+((x+x_max+i)%x_max)+((y+j+y_max)%y_max)*(x_max-1)+((z+k+z_max)%z_max)*(x_max-1)*(y_max-1))&AMORPH) pressure+=faktor*URAND_2BYTE_MAX/(i*i+j*j+k*k);
83 // count+=(3*range*range-i*i-j*j-k*k);
88 // count+=faktor*1.0/(i*i+j*j+k*k);
91 /* wrong probability! just test by now ...*/
92 if(rand_get(sum_range_rate)>count) make_cryst(cell);
95 if(rand_get(sum_range_rate)<=count) make_amorph(cell);
100 int main(int argc,char **argv)
102 u32 x_cell,y_cell,z_cell; /* amount of segments */
103 u32 x,y,z; /* cells */
104 int i; /* for counting */
105 int slope_nel,start_nel; /* nuclear energy loss: slope, constant */
106 int a_p_range; /* p. range of amorphous sic */
107 double a_p_faktor,a_p_p0; /* p0 and faktor of amorphous sic */
108 int steps; /* # steps */
110 struct __display display;
111 u32 display_x,display_y,display_z; /* intercept point of diplayed areas */
112 u32 display_refresh_rate; /* refresh rate for display */
113 int quit=0; /* continue/quit status */
116 x_cell=DEFAULT_X_SEG;
117 y_cell=DEFAULT_Y_SEG;
118 z_cell=DEFAULT_Z_SEG;
119 slope_nel=DEFAULT_SLOPE_NEL;
120 start_nel=DEFAULT_START_NEL;
121 a_p_range=DEFAULT_A_P_RANGE;
122 a_p_faktor=DEFAULT_A_P_FAKTOR;
123 a_p_p0=NOT_SPECIFIED;
128 display_refresh_rate=DEFAULT_DISPLAY_REF_RATE;
130 /* parse command args */
142 slope_nel=atoi(argv[++i]);
145 start_nel=atoi(argv[++i]);
148 x_cell=atoi(argv[++i]);
151 y_cell=atoi(argv[++i]);
154 z_cell=atoi(argv[++i]);
157 steps=atoi(argv[++i]);
160 display_x=atoi(argv[++i]);
163 display_y=atoi(argv[++i]);
166 display_z=atoi(argv[++i]);
169 display_refresh_rate=atoi(argv[++i]);
172 a_p_range=atoi(argv[++i]);
175 a_p_faktor=atof(argv[++i]);
178 a_p_p0=atof(argv[++i]);
188 if((random_fd=open("/dev/urandom",O_RDONLY))<0)
190 puts("cannot open /dev/urandom\n");
194 /* calculate sum_z_cells, sum_range_rate one time! */
196 for(i=1;i<=z_cell;i++) sum_z_cells+=(start_nel+i*slope_nel);
197 printfd("debug: sum z cells -> %u\n",sum_z_cells);
199 // for(i=-a_p_range;i<=a_p_range;i++)
201 // for(j=-a_p_range;j<=a_p_range;j++)
203 // for(k=-a_p_range;k<=a_p_range;k++)
205 // if(!(i==0 && j==0 && k==0))
206 // sum_range_rate+=((3*a_p_range*a_p_range)-i*i-j*j-k*k);
210 // printfd("debug: sum range rate -> %u\n",sum_range_rate);
211 // /* add a_p_p0 ... */
212 // if(a_p_p0==NOT_SPECIFIED) a_p_p0=sum_range_rate/4;
213 // sum_range_rate+=a_p_p0;
219 printf("malloc will free %d bytes now ...\n",x_cell*y_cell*z_cell*sizeof(u32));
220 if((cell_p=malloc(x_cell*y_cell*z_cell*sizeof(u32)))==NULL)
222 puts("failed allocating memory for cells\n");
225 memset(cell_p,0,x_cell*y_cell*z_cell*sizeof(u32));
228 display_init(x_cell,y_cell,z_cell,&display,cell_p,&argc,argv);
235 z=rand_get_lgp(slope_nel,start_nel);
238 // distrib_c_conc(cell_p);
240 // process_cell((u32 *)(cell_p+x+y*(x_cell-1)+z*(x_cell-1)*(y_cell-1)));
241 process_cell(cell_p,x,y,z,x_cell,y_cell,z_cell,a_p_range,a_p_faktor,a_p_p0);
244 if((i%display_refresh_rate)==0)
245 display_draw(&display,display_x,display_y,display_z);
248 /* display again and listen for events */
249 display_draw(&display,display_x,display_y,display_z);
250 display_event_init(&display);
254 display_scan_event(&display,&display_x,&display_y,&display_z,&quit);
255 display_draw(&display,display_x,display_y,display_z);
258 display_release(&display);