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INDC(SEC)-46/U+R+F+SIN DC INTERNATIONAL NUCLEAR DATA ...

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54 PLUTONIUM £39 FISSION CROSS <strong>SEC</strong>TION (CONTINUED)<br />

Z5420S SoCO KEV 1 Oo 0 MEV LoNcUSACHEV FE I<br />

FROM 0o 5 - 100 KEV ACCURACY 2o8 PERCENT,<br />

PRIORITY 2 ACCURACY lo2 PERCENTo<br />

FROM Oc1 - 0 c 8 MEV ACCURACY 3o0 PERCENT.<br />

PRIORITY 2 ACCURACY lo3 PERCENTo<br />

FROM OoS - 4o 5 MEV ACCURACY 4o 0 PERCENT,<br />

PRIORITY 2 ACCURACY 2o6 PERCENTo<br />

ABOVE 4c5 MEV REQUIREMENTS 2 TIMES WEAKERo<br />

NEED FOR FAST REACTOR CALCULATIONSo<br />

FOR MORE DETAIL SEE INTRODUCTIONo<br />

NEW REQUEST,<br />

HAR SOWERBY+ - ANE 1 4C9(1574). EVALUATION OF CATA PUBLISHED BEFORE ABOUT JANUARY 1973c<br />

o o ESTIMATED UNCERTAINTY IN FISSION CROSS <strong>SEC</strong>TIONoo<br />

oo 100 EV TO 3C KEV oooo 3 TO 4 PERCENT cc<br />

CO 30 KEV TO ICC- KEV oooo So 5 PERCENT oo<br />

oo 100 KEV TC 3 MEV oooo 4o 0 TC ScS PERCENT oo<br />

CO 3 MEV TO 2C MEV oooo So 5 TO 10 PERCENT oo<br />

oo NEAR 14 MEV cooooocoooo 2 PERCENT oo<br />

FOLLOWING CATA AVAILABLE SINCE SCWERBY EV ALUATIONo<br />

SAC BL0NS - NSE 51 120(1973), CATA 39 EV TO 30 KEVo<br />

FEI CHELNOKOV* - YFI-13 6(1972), <strong>DATA</strong> 200 EV TC 35 KEVo<br />

LRL BcHRENS* - LSN<strong>DC</strong>-11 136(1974). IN PROGRESS CoOl EV 100 KEV AND 10 KEV TO 20 MEVo<br />

GEL THEOBALD* - EAN<strong>DC</strong>(E)-150 (1972). IN PROGRESS 50 EV TO 2 KEVo<br />

HAR GAYTHER+ - AERE-PR/NP15( 1572), IN PROGRESS 1 KEV TO 1 MEVo PRELIMINARY <strong>DATA</strong> A VAILABLE o<br />

ORL G W IN • - USNCC-2 149(1572). IN PROGRESS THERMAL TO 200 KEVo<br />

NBS BOWMAN - WCRK FLANNEOo<br />

94 PLUTONIUM 239 NEUTRON CAPTURE TO FISSION RATIO (ALPHA)<br />

6S1314 100c EV 1 Co C MEV 1 USA CoEoTlLL ANL<br />

BoHUTCHINS<br />

GEB<br />

PoBcHEMMIG<br />

AEC<br />

FoCoMAIENSCHEIN ORL<br />

a: CAPTURE CROSS <strong>SEC</strong>TION EQUALLY USEFULo<br />

A: ACCURACY ICO EV TO 1 KEV, 8 PERCENT,<br />

oc 1 KEV TO 50 KEV, 4 PERCENT,<br />

o; 50 KEV TO 600 KEV. 6 PERCENT,<br />

o: 60C KEV TO 10 MEV, 10 PERCENTo<br />

Z.02035 500c EV loOO MEV 5cOX 2 FR JoYoEARRE<br />

ABSOLUTE VALUES USEFUL BUT REQUEST CONCERNS MAINLY<br />

RELATIVE VALUES VERSUS ENERGYo<br />

FOR FAST REACTOR CALCULATIONSo<br />

Z12DZe 2 Oo 0 KEV 1 OOo KEV lOcOX 3 UK Co'Go CAMPBELL<br />

A: ACCURACY FOR AVERAGE VALUE OF THE ERROR BETWEEN<br />

E AND 2Ec<br />

O: FOR FAST REACTORSO<br />

Z14225 1OCo EV SOOo KEV 7oOX 1 CCP MoNoNIKOLAEV FEI<br />

FOR EVALUATION OF DIFFERENCES IN CAPTURE AND<br />

FISSION-RESONANCE SELF SHIELD INGo<br />

MEASUREMENTS OF TRANSMISSION CURVES WITH FLAT-<br />

RESPONSE DETECTOR AND BY SELF-INDICAT I ON METHOD<br />

WITH CAPTURE AND FISSION DETECTORS ARE WANTEOo<br />

BEAM ATTENUATION DOWN TO 1 PERCENT WANTEDo<br />

IN REGION 1 TO 100 KEV, 4 TO 5 PERCENT ACCURACY<br />

DES IRABLEc<br />

LETHARGY RESOLUTION OF 0o2 SUFFICIENT FOR REGION<br />

0:1 TO 30 KEVo<br />

AT LEAST THREE DIFFERENT REQUESTS MUST COINCIDE<br />

WITHIN REQUESTED ACCURACYo<br />

SEE GENERAL COMMENTS IN THE IN TRODUC TI ONo<br />

FIRST PRIORITY BECAUSE IT IS DIFFICULT TO<br />

INTERPRET THE SELF-SHIELDING FACTORS FROM<br />

MACROSCOPIC <strong>DATA</strong> ONLYc<br />

SUBSTANTIAL MODIFICATIONSo<br />

STA TUS<br />

STATUS<br />

FEI CHELNOKOV+ - YFI-13 6(1672), <strong>DATA</strong> 200 EV TO 12 KEVo<br />

FEI KONONOV+ - AE 32 85(1972). <strong>DATA</strong> 10 KEV TO 1 MEVo<br />

KUR VOROTNIKOV+ - 73KIEV 4 42, <strong>DATA</strong> 3 TO 200 KEVc<br />

DUB BOLOTSKII+ - 73 KIEV 4 49, <strong>DATA</strong> THERMAL TO 30 KEVo<br />

ORL WESTON* - LSN0C-7 179(1973). IN PROGRESS THERMAL TO 20 KEVo<br />

KFK BANDL* - EAN<strong>DC</strong>(E)-157 (1573). IN PRCGRESS 8o1 TO 60 KEVo<br />

ORL GWIN+ - NCSAC-42 159(1971). THERMAL TO 400 KEVo<br />

ANL KATO* - NSE 45 37(1971). FAST REACTOR SPECTRUMo<br />

KAP EILAND* - NSE 44 180(1971), PILE SPECTRUMo<br />

94 PLUTONIUM 239 NEUTRCN NEUTRONS EMITTED PER NEUTRON ABSORPTION (ETA)<br />

642206 1 Oo 0 MV Oo 50 EV 0c8X 1<br />

UK JoGoTYROR WIN<br />

a: VALUE RELATIVE TO 25o3 MV ETA WANTEDo<br />

A: ACCURACY IS FOR AVERAGE VALUES IN 20 MV STEPSo<br />

O: FOR TEMPERATURE COEFFICIENT WORKo<br />

621124 2 5o 3 MV loOO EV OoSX 1<br />

USA BoHUTCHINS GEB<br />

0: FOR PU-FUELED REACTOR CALCULATIONSo<br />

FISSION LIST PAGE Ho 88

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