CCFE-709 group structure

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The 709 group structure is used for neutron-induced reactions and TENDL neutron-induced reaction data is provided in this group structure. In order to use the data, the GETXS 1 709 keyword must be used and the appropriate library selected in the files file. The PROJECTILE keyword may be omitted as neutron irradiation is the default simulation.

Note that the 709 group structure is comprised of 50 equal lethargy bins per decade (based on the TART-660 group) with a finer group structure in the MeV region to cover threshold reactions. The 30+ MeV region is a bespoke energy group structure used to follow the TENDL high energy reaction energy grid.

FISPACT-II 709 group structure
Group number Upper energy (eV)
1 1.0000E+9
2 9.6000E+8
3 9.2000E+8
4 8.8000E+8
5 8.4000E+8
6 8.0000E+8
7 7.6000E+8
8 7.2000E+8
9 6.8000E+8
10 6.4000E+8
11 6.0000E+8
12 5.6000E+8
13 5.2000E+8
14 4.8000E+8
15 4.4000E+8
16 4.0000E+8
17 3.6000E+8
18 3.2000E+8
19 2.8000E+8
20 2.4000E+8
21 2.0000E+8
22 1.8000E+8
23 1.6000E+8
24 1.5000E+8
25 1.4000E+8
26 1.3000E+8
27 1.2000E+8
28 1.1000E+8
29 1.0000E+8
30 9.0000E+7
31 8.0000E+7
32 7.5000E+7
33 7.0000E+7
34 6.5000E+7
35 6.0000E+7
36 5.8000E+7
37 5.6000E+7
38 5.4000E+7
39 5.2000E+7
40 5.0000E+7
41 4.8000E+7
42 4.6000E+7
43 4.4000E+7
44 4.2000E+7
45 4.0000E+7
46 3.8000E+7
47 3.6000E+7
48 3.4000E+7
49 3.2000E+7
50 3.0000E+7
51 2.9000E+7
52 2.8000E+7
53 2.7000E+7
54 2.6000E+7
55 2.5000E+7
56 2.4000E+7
57 2.3000E+7
58 2.2000E+7
59 2.1000E+7
60 2.0000E+7
61 1.9800E+7
62 1.9600E+7
63 1.9400E+7
64 1.9200E+7
65 1.9000E+7
66 1.8800E+7
67 1.8600E+7
68 1.8400E+7
69 1.8200E+7
70 1.8000E+7
71 1.7800E+7
72 1.7600E+7
73 1.7400E+7
74 1.7200E+7
75 1.7000E+7
76 1.6800E+7
77 1.6600E+7
78 1.6400E+7
79 1.6200E+7
80 1.6000E+7
81 1.5800E+7
82 1.5600E+7
83 1.5400E+7
84 1.5200E+7
85 1.5000E+7
86 1.4800E+7
87 1.4600E+7
88 1.4400E+7
89 1.4200E+7
90 1.4000E+7
91 1.3800E+7
92 1.3600E+7
93 1.3400E+7
94 1.3200E+7
95 1.3000E+7
96 1.2800E+7
97 1.2600E+7
98 1.2400E+7
99 1.2200E+7
100 1.2000E+7
101 1.1800E+7
102 1.1600E+7
103 1.1400E+7
104 1.1200E+7
105 1.1000E+7
106 1.0800E+7
107 1.0600E+7
108 1.0400E+7
109 1.0200E+7
110 1.0000E+7
111 9.5499E+6
112 9.1201E+6
113 8.7096E+6
114 8.3176E+6
115 7.9433E+6
116 7.5858E+6
117 7.2444E+6
118 6.9183E+6
119 6.6069E+6
120 6.3096E+6
121 6.0256E+6
122 5.7544E+6
123 5.4954E+6
124 5.2481E+6
125 5.0119E+6
126 4.7863E+6
127 4.5709E+6
128 4.3652E+6
129 4.1687E+6
130 3.9811E+6
131 3.8019E+6
132 3.6308E+6
133 3.4674E+6
134 3.3113E+6
135 3.1623E+6
136 3.0200E+6
137 2.8840E+6
138 2.7542E+6
139 2.6303E+6
140 2.5119E+6
141 2.3988E+6
142 2.2909E+6
143 2.1878E+6
144 2.0893E+6
145 1.9953E+6
146 1.9055E+6
147 1.8197E+6
148 1.7378E+6
149 1.6596E+6
150 1.5849E+6
151 1.5136E+6
152 1.4454E+6
153 1.3804E+6
154 1.3183E+6
155 1.2589E+6
156 1.2023E+6
157 1.1482E+6
158 1.0965E+6
159 1.0471E+6
160 1.0000E+6
161 9.5499E+5
162 9.1201E+5
163 8.7096E+5
164 8.3176E+5
165 7.9433E+5
166 7.5858E+5
167 7.2444E+5
168 6.9183E+5
169 6.6069E+5
170 6.3096E+5
171 6.0256E+5
172 5.7544E+5
173 5.4954E+5
174 5.2481E+5
175 5.0119E+5
176 4.7863E+5
177 4.5709E+5
178 4.3652E+5
179 4.1687E+5
180 3.9811E+5
181 3.8019E+5
182 3.6308E+5
183 3.4674E+5
184 3.3113E+5
185 3.1623E+5
186 3.0200E+5
187 2.8840E+5
188 2.7542E+5
189 2.6303E+5
190 2.5119E+5
191 2.3988E+5
192 2.2909E+5
193 2.1878E+5
194 2.0893E+5
195 1.9953E+5
196 1.9055E+5
197 1.8197E+5
198 1.7378E+5
199 1.6596E+5
200 1.5849E+5
201 1.5136E+5
202 1.4454E+5
203 1.3804E+5
204 1.3183E+5
205 1.2589E+5
206 1.2023E+5
207 1.1482E+5
208 1.0965E+5
209 1.0471E+5
210 1.0000E+5
211 9.5499E+4
212 9.1201E+4
213 8.7096E+4
214 8.3176E+4
215 7.9433E+4
216 7.5858E+4
217 7.2444E+4
218 6.9183E+4
219 6.6069E+4
220 6.3096E+4
221 6.0256E+4
222 5.7544E+4
223 5.4954E+4
224 5.2481E+4
225 5.0119E+4
226 4.7863E+4
227 4.5709E+4
228 4.3652E+4
229 4.1687E+4
230 3.9811E+4
231 3.8019E+4
232 3.6308E+4
233 3.4674E+4
234 3.3113E+4
235 3.1623E+4
236 3.0200E+4
237 2.8840E+4
238 2.7542E+4
239 2.6303E+4
240 2.5119E+4
241 2.3988E+4
242 2.2909E+4
243 2.1878E+4
244 2.0893E+4
245 1.9953E+4
246 1.9055E+4
247 1.8197E+4
248 1.7378E+4
249 1.6596E+4
250 1.5849E+4
251 1.5136E+4
252 1.4454E+4
253 1.3804E+4
254 1.3183E+4
255 1.2589E+4
256 1.2023E+4
257 1.1482E+4
258 1.0965E+4
259 1.0471E+4
260 1.0000E+4
261 9.5499E+3
262 9.1201E+3
263 8.7096E+3
264 8.3176E+3
265 7.9433E+3
266 7.5858E+3
267 7.2444E+3
268 6.9183E+3
269 6.6069E+3
270 6.3096E+3
271 6.0256E+3
272 5.7544E+3
273 5.4954E+3
274 5.2481E+3
275 5.0119E+3
276 4.7863E+3
277 4.5709E+3
278 4.3652E+3
279 4.1687E+3
280 3.9811E+3
281 3.8019E+3
282 3.6308E+3
283 3.4674E+3
284 3.3113E+3
285 3.1623E+3
286 3.0200E+3
287 2.8840E+3
288 2.7542E+3
289 2.6303E+3
290 2.5119E+3
291 2.3988E+3
292 2.2909E+3
293 2.1878E+3
294 2.0893E+3
295 1.9953E+3
296 1.9055E+3
297 1.8197E+3
298 1.7378E+3
299 1.6596E+3
300 1.5849E+3
301 1.5136E+3
302 1.4454E+3
303 1.3804E+3
304 1.3183E+3
305 1.2589E+3
306 1.2023E+3
307 1.1482E+3
308 1.0965E+3
309 1.0471E+3
310 1.0000E+3
311 9.5499E+2
312 9.1201E+2
313 8.7096E+2
314 8.3176E+2
315 7.9433E+2
316 7.5858E+2
317 7.2444E+2
318 6.9183E+2
319 6.6069E+2
320 6.3096E+2
321 6.0256E+2
322 5.7544E+2
323 5.4954E+2
324 5.2481E+2
325 5.0119E+2
326 4.7863E+2
327 4.5709E+2
328 4.3652E+2
329 4.1687E+2
330 3.9811E+2
331 3.8019E+2
332 3.6308E+2
333 3.4674E+2
334 3.3113E+2
335 3.1623E+2
336 3.0200E+2
337 2.8840E+2
338 2.7542E+2
339 2.6303E+2
340 2.5119E+2
341 2.3988E+2
342 2.2909E+2
343 2.1878E+2
344 2.0893E+2
345 1.9953E+2
346 1.9055E+2
347 1.8197E+2
348 1.7378E+2
349 1.6596E+2
350 1.5849E+2
351 1.5136E+2
352 1.4454E+2
353 1.3804E+2
354 1.3183E+2
355 1.2589E+2
356 1.2023E+2
357 1.1482E+2
358 1.0965E+2
359 1.0471E+2
360 1.0000E+2
361 9.5499E+1
362 9.1201E+1
363 8.7096E+1
364 8.3176E+1
365 7.9433E+1
366 7.5858E+1
367 7.2444E+1
368 6.9183E+1
369 6.6069E+1
370 6.3096E+1
371 6.0256E+1
372 5.7544E+1
373 5.4954E+1
374 5.2481E+1
375 5.0119E+1
376 4.7863E+1
377 4.5709E+1
378 4.3652E+1
379 4.1687E+1
380 3.9811E+1
381 3.8019E+1
382 3.6308E+1
383 3.4674E+1
384 3.3113E+1
385 3.1623E+1
386 3.0200E+1
387 2.8840E+1
388 2.7542E+1
389 2.6303E+1
390 2.5119E+1
391 2.3988E+1
392 2.2909E+1
393 2.1878E+1
394 2.0893E+1
395 1.9953E+1
396 1.9055E+1
397 1.8197E+1
398 1.7378E+1
399 1.6596E+1
400 1.5849E+1
401 1.5136E+1
402 1.4454E+1
403 1.3804E+1
404 1.3183E+1
405 1.2589E+1
406 1.2023E+1
407 1.1482E+1
408 1.0965E+1
409 1.0471E+1
410 1.0000E+1
411 9.5499E+0
412 9.1201E+0
413 8.7096E+0
414 8.3176E+0
415 7.9433E+0
416 7.5858E+0
417 7.2444E+0
418 6.9183E+0
419 6.6069E+0
420 6.3096E+0
421 6.0256E+0
422 5.7544E+0
423 5.4954E+0
424 5.2481E+0
425 5.0119E+0
426 4.7863E+0
427 4.5709E+0
428 4.3652E+0
429 4.1687E+0
430 3.9811E+0
431 3.8019E+0
432 3.6308E+0
433 3.4674E+0
434 3.3113E+0
435 3.1623E+0
436 3.0200E+0
437 2.8840E+0
438 2.7542E+0
439 2.6303E+0
440 2.5119E+0
441 2.3988E+0
442 2.2909E+0
443 2.1878E+0
444 2.0893E+0
445 1.9953E+0
446 1.9055E+0
447 1.8197E+0
448 1.7378E+0
449 1.6596E+0
450 1.5849E+0
451 1.5136E+0
452 1.4454E+0
453 1.3804E+0
454 1.3183E+0
455 1.2589E+0
456 1.2023E+0
457 1.1482E+0
458 1.0965E+0
459 1.0471E+0
460 1.0000E+0
461 9.5499E-1
462 9.1201E-1
463 8.7096E-1
464 8.3176E-1
465 7.9433E-1
466 7.5858E-1
467 7.2444E-1
468 6.9183E-1
469 6.6069E-1
470 6.3096E-1
471 6.0256E-1
472 5.7544E-1
473 5.4954E-1
474 5.2481E-1
475 5.0119E-1
476 4.7863E-1
477 4.5709E-1
478 4.3652E-1
479 4.1687E-1
480 3.9811E-1
481 3.8019E-1
482 3.6308E-1
483 3.4674E-1
484 3.3113E-1
485 3.1623E-1
486 3.0200E-1
487 2.8840E-1
488 2.7542E-1
489 2.6303E-1
490 2.5119E-1
491 2.3988E-1
492 2.2909E-1
493 2.1878E-1
494 2.0893E-1
495 1.9953E-1
496 1.9055E-1
497 1.8197E-1
498 1.7378E-1
499 1.6596E-1
500 1.5849E-1
501 1.5136E-1
502 1.4454E-1
503 1.3804E-1
504 1.3183E-1
505 1.2589E-1
506 1.2023E-1
507 1.1482E-1
508 1.0965E-1
509 1.0471E-1
510 1.0000E-1
511 9.5499E-2
512 9.1201E-2
513 8.7096E-2
514 8.3176E-2
515 7.9433E-2
516 7.5858E-2
517 7.2444E-2
518 6.9183E-2
519 6.6069E-2
520 6.3096E-2
521 6.0256E-2
522 5.7544E-2
523 5.4954E-2
524 5.2481E-2
525 5.0119E-2
526 4.7863E-2
527 4.5709E-2
528 4.3652E-2
529 4.1687E-2
530 3.9811E-2
531 3.8019E-2
532 3.6308E-2
533 3.4674E-2
534 3.3113E-2
535 3.1623E-2
536 3.0200E-2
537 2.8840E-2
538 2.7542E-2
539 2.6303E-2
540 2.5119E-2
541 2.3988E-2
542 2.2909E-2
543 2.1878E-2
544 2.0893E-2
545 1.9953E-2
546 1.9055E-2
547 1.8197E-2
548 1.7378E-2
549 1.6596E-2
550 1.5849E-2
551 1.5136E-2
552 1.4454E-2
553 1.3804E-2
554 1.3183E-2
555 1.2589E-2
556 1.2023E-2
557 1.1482E-2
558 1.0965E-2
559 1.0471E-2
560 1.0000E-2
561 9.5499E-3
562 9.1201E-3
563 8.7096E-3
564 8.3176E-3
565 7.9433E-3
566 7.5858E-3
567 7.2444E-3
568 6.9183E-3
569 6.6069E-3
570 6.3096E-3
571 6.0256E-3
572 5.7544E-3
573 5.4954E-3
574 5.2481E-3
575 5.0119E-3
576 4.7863E-3
577 4.5709E-3
578 4.3652E-3
579 4.1687E-3
580 3.9811E-3
581 3.8019E-3
582 3.6308E-3
583 3.4674E-3
584 3.3113E-3
585 3.1623E-3
586 3.0200E-3
587 2.8840E-3
588 2.7542E-3
589 2.6303E-3
590 2.5119E-3
591 2.3988E-3
592 2.2909E-3
593 2.1878E-3
594 2.0893E-3
595 1.9953E-3
596 1.9055E-3
597 1.8197E-3
598 1.7378E-3
599 1.6596E-3
600 1.5849E-3
601 1.5136E-3
602 1.4454E-3
603 1.3804E-3
604 1.3183E-3
605 1.2589E-3
606 1.2023E-3
607 1.1482E-3
608 1.0965E-3
609 1.0471E-3
610 1.0000E-3
611 9.5499E-4
612 9.1201E-4
613 8.7096E-4
614 8.3176E-4
615 7.9433E-4
616 7.5858E-4
617 7.2444E-4
618 6.9183E-4
619 6.6069E-4
620 6.3096E-4
621 6.0256E-4
622 5.7544E-4
623 5.4954E-4
624 5.2481E-4
625 5.0119E-4
626 4.7863E-4
627 4.5709E-4
628 4.3652E-4
629 4.1687E-4
630 3.9811E-4
631 3.8019E-4
632 3.6308E-4
633 3.4674E-4
634 3.3113E-4
635 3.1623E-4
636 3.0200E-4
637 2.8840E-4
638 2.7542E-4
639 2.6303E-4
640 2.5119E-4
641 2.3988E-4
642 2.2909E-4
643 2.1878E-4
644 2.0893E-4
645 1.9953E-4
646 1.9055E-4
647 1.8197E-4
648 1.7378E-4
649 1.6596E-4
650 1.5849E-4
651 1.5136E-4
652 1.4454E-4
653 1.3804E-4
654 1.3183E-4
655 1.2589E-4
656 1.2023E-4
657 1.1482E-4
658 1.0965E-4
659 1.0471E-4
660 1.0000E-4
661 9.5499E-5
662 9.1201E-5
663 8.7096E-5
664 8.3176E-5
665 7.9433E-5
666 7.5858E-5
667 7.2444E-5
668 6.9183E-5
669 6.6069E-5
670 6.3096E-5
671 6.0256E-5
672 5.7544E-5
673 5.4954E-5
674 5.2481E-5
675 5.0119E-5
676 4.7863E-5
677 4.5709E-5
678 4.3652E-5
679 4.1687E-5
680 3.9811E-5
681 3.8019E-5
682 3.6308E-5
683 3.4674E-5
684 3.3113E-5
685 3.1623E-5
686 3.0200E-5
687 2.8840E-5
688 2.7542E-5
689 2.6303E-5
690 2.5119E-5
691 2.3988E-5
692 2.2909E-5
693 2.1878E-5
694 2.0893E-5
695 1.9953E-5
696 1.9055E-5
697 1.8197E-5
698 1.7378E-5
699 1.6596E-5
700 1.5849E-5
701 1.5136E-5
702 1.4454E-5
703 1.3804E-5
704 1.3183E-5
705 1.2589E-5
706 1.2023E-5
707 1.1482E-5
708 1.0965E-5
709 1.0471E-5
710 1.0000E-5