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

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

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92 URANIUM 235 NEUTRON DELAYED N E U T R O N S EMITTED PERFISSION (CONTINUED)<br />

Z14015 SOOO KEV 15o 0 MEV McN o NIKOLAEV FEI<br />

DECISION ABOUT TOTAL INELASTIC CROSS <strong>SEC</strong>TION AT<br />

1 = 0 TO 2o 5 MEV WANTEDc<br />

TEMPERATURE FOR INELASTIC NEUTRONS WANTED AT THE<br />

HIGHER ENERGIESc<br />

SPECTRA AND CROSS <strong>SEC</strong>TION FOR DIRECT INELASTIC<br />

SCATTERING PROCESSES TO BE INVESTIGATED IN THE<br />

MEV REGION AS WELL AS DIRECT MECHANISM CONTRIB-<br />

UTlONSo<br />

CROSS <strong>SEC</strong>TION FOR INELASTIC REMOVAL BELOW FISSION<br />

THRESHOLD OF U-238 WANTED TO lo5 - 2o 0 PERCENTo<br />

CROSS <strong>SEC</strong>TION FOR INELASTIC REMOVAL BELOW FISSION<br />

THRESHOLD OF PU-240 OR NP-237 WANTED TO 3 - 5<br />

PERCENT:<br />

EXCITATION CS FOR FIRST LEVEL ABOVE THRESHOLD TO 2<br />

MEV SHOULD BE MEASURED WITH 5 PERCENT ACCURACYo<br />

NEUTRON SPECTRA TO BE MEASURED WITH 5 PERCENT<br />

ACCURACY AT 2=515 MEVo<br />

SEE GENERAL COMMENTS IN THE INTRODUCTIONo<br />

PRECISION MEASUREMENTS OF MENTIONED INTEGRAL<br />

PARAMETERS IN SHELL TRANSMISSION EXPERIMENTS<br />

WITH CF-252 NEUTRON SOURCE AND U-238 AND NP-237<br />

FISSION THRESHOLD DETECTORS AS WELL AS BY<br />

NEUTRON SPECTROMETER SEEMS VERY USEFULo<br />

SUBSTANTIAL MOO IF ICAT.I ONSo<br />

-STATUS<br />

GEL<br />

PEL<br />

HAR<br />

GEL<br />

ANL<br />

KFK<br />

AE<br />

L T I<br />

KNITTER* - ZP 244 358( 1971). <strong>DATA</strong> 1c 5 TO 2o3 MEVo<br />

BARNARD* - 70 HELSINKI 2 103. <strong>DATA</strong> TC lc4 MEVo<br />

ARMITAGE* - AERE-PR/NP18 (1972). IN PROGRESS lo1 TO 2=4 MEVc<br />

KNITTER* - EANCC(E)—15G (1972), WCfiK CCNTINUESo<br />

SMITH* - LSNOC-11 25(1974)o NEW RESULTS TO 4 MEVo<br />

VOSS* - EAN<strong>DC</strong>(E ) -157 (1973), IN PROGRESS TC 2 MEVo<br />

CONDE+ - WORK IN PROGRESSo<br />

MARCELLA* - <strong>DATA</strong> 1 TO 2o 7 MEVo<br />

92 URANIUM 238 NEUTRON DOUBLE DIFFERENTIAL INELASTIC CROSS <strong>SEC</strong>TION<br />

£52252 1o 00 MEV 2o 50 MEV UK CcGoCAMPBELL WIN<br />

o: FOR FAST REACTORSc<br />

65,3062 3 09o KEV 1 Oo 0 MEV lOoOX 1 BAN MoMc ISLAM RAM<br />

0: FOR FAST REACTORSc<br />

Z420S4<br />

1 5o 0 MEV SoOX FR AoMICHAUDON<br />

STA TUS-<br />

STATUS-<br />

-STATUS<br />

HAR ARM ITAGEo - IN FROGRESSo<br />

92 URANIUM 238 NEUTRON NCN-ELASTIC CROSS <strong>SEC</strong>TION<br />

65.2.0 £1 ICOo KEV 1Oo 0 MEV lOoOX BAN M0M0ISLAM RAM<br />

O: FOR FAST REACTORSo<br />

Z1401Z 1 1 Co 0 KEV 1 5o 0 MEV MoNcNIKOLAEV FEI<br />

DIRECT MEASUREMENTS BY SHELL TRANSMISSION<br />

DESIRABLE WITH 3-5 PERCENT ACCURACY,<br />

FOR EVALUATION OF INELASTIC SCATTERING CROSS<br />

<strong>SEC</strong>TION FOR FAST REACTORSo<br />

92 URANIUM 238 NEUTRCN CAPTURE CROSS <strong>SEC</strong>TION<br />

651415 SCO, EV<br />

1Oo 0<br />

MEV<br />

C0E0TILL<br />

Be HUTC H INS<br />

P o BeHEMMIG<br />

ANL<br />

GEB<br />

AEC<br />

ACCURACY 6 PERCENT FROM 500 EV TO 1 KEV, 4 PERCENT<br />

FROM 1 KEV TO 300 KEV, 6 PERCENT FROM 300 KEV TO<br />

500 KEV, 10 PERCENT FROM 500 KEV TO 10 MEVo<br />

ACCURACY OF 10 PERCENT FROM 1 KEV TO 10 MEV,<br />

USEFULc<br />

HIGHEST PRIORITY NEED FOR FAST REACTOR<br />

CALCULATIONSo<br />

651435 10,0 KEV<br />

1 Oo 0 MEV<br />

COECTILL<br />

BoHUTCHINS<br />

PoBeHEMMIG<br />

Ao.M,PERRY<br />

ANL<br />

GEB<br />

AEC<br />

ORL<br />

NEEDED IS RATIO OF CAPTURE CROSS <strong>SEC</strong>TION U-238 TO<br />

FISSION CROSS <strong>SEC</strong>TION OF PU-239 OR U-235o<br />

DIRECT RATIO NEEDED TO SUPPLEMENT SEPARATE<br />

MEASUREMENT,<br />

ACCURACY 1,5 PERCENT BELOW 300 KEV, 7 PERCENT<br />

ABOVEo<br />

INTERMEDIATE ACCURACY USEFUL NEAR TERMo<br />

652401 SoOO MV<br />

60 00 EV<br />

J0G0TYROR<br />

A: ACCURACY REQUIRED o03 BARNSo<br />

0: FOR THERMAL REACTORSo<br />

£52402 4,00 EV 500, EV 2,OX HOTELLIER SAC<br />

0: RELATIVE TO SIGMA(N.G) AT THERMALo<br />

O: FOR CALCULATION OF IEFFo<br />

EVALUATION MAY SUFFICE IF IT EXPLAINS<br />

DISCREPANCIES,<br />

FISSION LIST PAGE 1 lo 83

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