ENTRY C2432 20200110 C189C243200000001 SUBENT C2432001 20200110 C189C243200100001 BIB 11 38 C243200100002 TITLE Mass distribution in the fission of 238U with 3He ions C243200100003 AUTHOR (E.F.Meyer Jr,W.H.Button,K.Arnold) C243200100004 REFERENCE (J,JIN,33,2745,1971) C243200100005 INSTITUTE (1USAUSA) Department of Chemistry, Lewis-St. Francis C243200100006 College of Illinois, Lockport, Ill. 60441, USA C243200100007 FACILITY (CYCLO,1USAANL) C243200100008 SAMPLE (92-U-238,ENR=0.999) Circular pieces of uranium foil, C243200100009 supplied by Nuclear Fuel Services, Inc., Erwin, C243200100010 Tennessee, of 2-mil (96.8mg/cm2) thickness served as C243200100011 the target material. Isotopic analysis supplied by C243200100012 the manufacturer was given as 99.9% 238U. The target C243200100013 assembly consisted of three pieces of uranium C243200100014 "sandwiched" between l-mil aluminum catcher foils, C243200100015 i.e. a l-mil aluminum foil followed by a 2-mil C243200100016 uranium foil, two 1-mil aluminum foils, a uranium C243200100017 foil, etc. C243200100018 DETECTOR (GEMUC,PROPC,NAICR) A calibrated GM counter or a C243200100019 windowless proportional counter of known geometry C243200100020 (Canberra Instruments). In some cases these C243200100021 measurements were supplemented by gamma-counting with C243200100022 a NaI(Tl) scintillation crystal in conjunction with a C243200100023 Nuclear Data 512 pulse-height channel analyzer. C243200100024 METHOD (CHSEP,ACTIV) Following irradiation the target C243200100025 assembly was dismantled and each uranium target C243200100026 dissolved in HCl and HNO3 together with its forward C243200100027 and backward recoil catcher foils. Final forms of the C243200100028 counting samples were solids mounted on small pieces C243200100029 of filter paper and aluminum discs and covered with C243200100030 Pliofilm. The final precipitates were generally C243200100031 counted with multiple detectors. C243200100032 ANALYSIS (DECAY) Decay curves were resolved into their C243200100033 components and a disintegration rate computed. The C243200100034 rate was then converted into an absolute cross C243200100035 section. C243200100036 CORRECTION Data were corrected for chemical yield, intrinsic C243200100037 counting efficiency, back-scattering, self-absorption, C243200100038 and self-scattering. C243200100039 HISTORY (20200110C) BP C243200100040 ENDBIB 38 0 C243200100041 NOCOMMON 0 0 C243200100042 ENDSUBENT 41 0 C243200199999 SUBENT C2432002 20200110 C189C243200200001 BIB 4 13 C243200200002 REACTION (92-U-238(HE3,F)ELEM/MASS,CUM,SIG) C243200200003 INC-SPECT Cyclotron irradiations, employing a total 3He current C243200200004 of 2.5 microamph, were carried out at Argonne C243200200005 National Laboratory. The energies quoted here refer C243200200006 to the average of the energy of the beam incident C243200200007 upon the face of the target and that emerging from C243200200008 the rear of the target. C243200200009 ERR-ANALYS (DATA-ERR) Error limits in individual values were C243200200010 determined as standard deviations compounded from C243200200011 estimated errors in the disintegration rate, the C243200200012 various counting factors, and chemical yield C243200200013 determinations. C243200200014 STATUS (TABLE) Table 1, page 2747. C243200200015 ENDBIB 13 0 C243200200016 COMMON 2 3 C243200200017 EN EN-ERR C243200200018 MEV MEV C243200200019 30.1 0.5 C243200200020 ENDCOMMON 3 0 C243200200021 DATA 4 13 C243200200022 ELEMENT MASS DATA DATA-ERR C243200200023 NO-DIM NO-DIM MB MB C243200200024 35.0 83.0 2.71 0.32 C243200200025 38.0 89.0 8.9 0.71 C243200200026 38.0 91.0 13.7 0.55 C243200200027 42.0 99.0 28.8 0.15 C243200200028 44.0 103.0 36.1 0.11 C243200200029 44.0 105.0 34.2 0.29 C243200200030 46.0 109.0 17.7 0.09 C243200200031 47.0 111.0 17.0 0.23 C243200200032 48.0 115.0 13.5 0.17 C243200200033 52.0 132.0 18.3 0.23 C243200200034 56.0 140.0 34.2 0.17 C243200200035 58.0 141.0 36.0 0.20 C243200200036 58.0 143.0 23.6 0.14 C243200200037 ENDDATA 15 0 C243200200038 ENDSUBENT 37 0 C243200299999 SUBENT C2432003 20200110 C189C243200300001 BIB 4 15 C243200300002 REACTION (92-U-238(HE3,F),,SIG,,,DERIV) C243200300003 INC-SPECT Cyclotron irradiations, employing a total 3He current C243200300004 of 2.5 microamph, were carried out at Argonne C243200300005 National Laboratory. The energies quoted here refer C243200300006 to the average of the energy of the beam incident C243200300007 upon the face of the target and that emerging from C243200300008 the rear of the target. C243200300009 ANALYSIS Total fission cross sections, also indicated in Table C243200300010 l, were obtained by summation under smoothed fission C243200300011 yield curves and subsequent normalization to 100 per C243200300012 cent. C243200300013 STATUS (DEP,C2432002) C243200300014 (DEP,C2432004) C243200300015 (DEP,C2432005) C243200300016 (TABLE) Table 1, page 2747. C243200300017 ENDBIB 15 0 C243200300018 NOCOMMON 0 0 C243200300019 DATA 4 3 C243200300020 EN EN-ERR EN-MAX DATA C243200300021 MEV MEV MEV MB C243200300022 30.1 0.5 716.3 C243200300023 21.0 1.0 121.3 C243200300024 13.8 1.9 C243200300025 ENDDATA 5 0 C243200300026 ENDSUBENT 25 0 C243200399999 SUBENT C2432004 20200110 C189C243200400001 BIB 4 13 C243200400002 REACTION (92-U-238(HE3,F)ELEM/MASS,CUM,SIG) C243200400003 INC-SPECT Cyclotron irradiations, employing a total 3He current C243200400004 of 2.5 microamph, were carried out at Argonne C243200400005 National Laboratory. The energies quoted here refer C243200400006 to the average of the energy of the beam incident C243200400007 upon the face of the target and that emerging from C243200400008 the rear of the target. C243200400009 ERR-ANALYS (DATA-ERR) Error limits in individual values were C243200400010 determined as standard deviations compounded from C243200400011 estimated errors in the disintegration rate, the C243200400012 various counting factors, and chemical yield C243200400013 determinations. C243200400014 STATUS (TABLE) Table 1, page 2747. C243200400015 ENDBIB 13 0 C243200400016 COMMON 2 3 C243200400017 EN EN-ERR C243200400018 MEV MEV C243200400019 21.0 1.0 C243200400020 ENDCOMMON 3 0 C243200400021 DATA 4 12 C243200400022 ELEMENT MASS DATA DATA-ERR C243200400023 NO-DIM NO-DIM MB MB C243200400024 38.0 89.0 0.91 0.09 C243200400025 38.0 91.0 1.73 0.41 C243200400026 42.0 99.0 5.24 0.15 C243200400027 44.0 103.0 6.63 0.52 C243200400028 44.0 105.0 6.32 0.22 C243200400029 46.0 109.0 4.44 0.19 C243200400030 47.0 111.0 2.75 0.19 C243200400031 48.0 115.0 1.65 0.27 C243200400032 52.0 132.0 4.49 0.34 C243200400033 56.0 140.0 6.28 0.23 C243200400034 58.0 141.0 5.78 0.60 C243200400035 58.0 143.0 5.42 0.49 C243200400036 ENDDATA 14 0 C243200400037 ENDSUBENT 36 0 C243200499999 SUBENT C2432005 20200110 C189C243200500001 BIB 4 12 C243200500002 REACTION (92-U-238(HE3,F)ELEM/MASS,CUM,SIG) C243200500003 INC-SPECT Cyclotron irradiations, employing a total 3He current C243200500004 of 2.5 microamph, were carried out at Argonne C243200500005 National Laboratory. The energy of the 3He ion beam C243200500006 incident upon the face of the third target was C243200500007 calculated as 13.8 MeV which is completely degraded. C243200500008 ERR-ANALYS (DATA-ERR) Error limits in individual values were C243200500009 determined as standard deviations compounded from C243200500010 estimated errors in the disintegration rate, the C243200500011 various counting factors, and chemical yield C243200500012 determinations. C243200500013 STATUS (TABLE) Table 1, page 2747. C243200500014 ENDBIB 12 0 C243200500015 COMMON 1 3 C243200500016 EN-MAX C243200500017 MEV C243200500018 13.8 C243200500019 ENDCOMMON 3 0 C243200500020 DATA 4 12 C243200500021 ELEMENT MASS DATA DATA-ERR C243200500022 NO-DIM NO-DIM MB MB C243200500023 38.0 89.0 0.005 0.001 C243200500024 38.0 91.0 0.020 0.003 C243200500025 42.0 99.0 0.068 0.012 C243200500026 44.0 103.0 0.081 0.024 C243200500027 44.0 105.0 0.074 0.026 C243200500028 46.0 109.0 0.038 0.016 C243200500029 47.0 111.0 0.022 0.007 C243200500030 48.0 115.0 0.008 0.002 C243200500031 52.0 132.0 0.037 0.005 C243200500032 56.0 140.0 0.084 0.014 C243200500033 58.0 141.0 0.074 0.019 C243200500034 58.0 143.0 0.068 0.011 C243200500035 ENDDATA 14 0 C243200500036 ENDSUBENT 35 0 C243200599999 ENDENTRY 5 0 C243299999999