ENTRY C2491 20200303 C192C249100000001 SUBENT C2491001 20200303 C192C249100100001 BIB 8 19 C249100100002 TITLE Measurement of pre- and post-fission neutron emission C249100100003 at moderate excitation energies C249100100004 AUTHOR (Z.Fraenkel,I.Mayk,J.P.Unik,A.J.Gorski,W.D.Loveland) C249100100005 REFERENCE (J,PR/C,12,1809,1975) C249100100006 #doi:10.1103/PhysRevC.12.1809 C249100100007 INSTITUTE (1USAANL,3ISLWZI) C249100100008 FACILITY (VDGT,1USAANL) The ANL FN tandem. C249100100009 DETECTOR (SOLST,SCIN) Solid state detectors and plastic C249100100010 scintillators. C249100100011 METHOD (TOF) Thin targets were placed in the beam direction C249100100012 in the center of a vacuum chamber. Inside the chamber, C249100100013 solid state detectors were positioned to detect the C249100100014 two complementary fission fragments. Outside the C249100100015 chamber, two plastic scintillators attached to C249100100016 photomultipliers detected the neutrons emitted. The C249100100017 delay between the signals of one of the fission C249100100018 detectors and the scintillation detector allowed the C249100100019 determination of the neutron time-of-flight. C249100100020 HISTORY (20200303C) BP C249100100021 ENDBIB 19 0 C249100100022 NOCOMMON 0 0 C249100100023 ENDSUBENT 22 0 C249100199999 SUBENT C2491002 20200303 C192C249100200001 BIB 5 8 C249100200002 REACTION 1(83-BI-209(A,F),PRE,AP,LF) C249100200003 2(83-BI-209(A,F),PRE,AP,HF) C249100200004 SAMPLE 100 microg/cm2 thickness. C249100200005 MISC-COL (MISC) The standard deviation of the mass C249100200006 distribution. C249100200007 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249100200008 between several measurements of the same quantities. C249100200009 STATUS (TABLE) Table II, page 1819. C249100200010 ENDBIB 8 0 C249100200011 COMMON 1 3 C249100200012 EN C249100200013 MEV C249100200014 45.0 C249100200015 ENDCOMMON 3 0 C249100200016 DATA 6 1 C249100200017 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MISC MISC-ERR C249100200018 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM C249100200019 98.4 0.5 114.6 0.5 10.1 0.2C249100200020 ENDDATA 3 0 C249100200021 ENDSUBENT 20 0 C249100299999 SUBENT C2491003 20200303 C192C249100300001 BIB 5 7 C249100300002 REACTION (83-BI-209(A,F)MASS,PRE,KE) C249100300003 SAMPLE 100 microg/cm2 thickness. C249100300004 MISC-COL (MISC) The standard deviation of the total kinetic C249100300005 energy distribution. C249100300006 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249100300007 between several measurements of the same quantities. C249100300008 STATUS (TABLE) Table II, page 1819. C249100300009 ENDBIB 7 0 C249100300010 COMMON 3 3 C249100300011 EN MASS-MIN MASS-MAX C249100300012 MEV NO-DIM NO-DIM C249100300013 45.0 70.0 140.0 C249100300014 ENDCOMMON 3 0 C249100300015 DATA 4 1 C249100300016 DATA DATA-ERR MISC MISC-ERR C249100300017 MEV MEV MEV MEV C249100300018 146.0 1.0 8.0 0.2 C249100300019 ENDDATA 3 0 C249100300020 ENDSUBENT 19 0 C249100399999 SUBENT C2491004 20200303 C192C249100400001 BIB 5 8 C249100400002 REACTION 1(88-RA-226(P,F),PRE,AP,LF) C249100400003 2(88-RA-226(P,F),PRE,AP,HF) C249100400004 SAMPLE 50 microg/cm2 thickness. C249100400005 MISC-COL (MISC) The standard deviation of the mass C249100400006 distribution. C249100400007 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249100400008 between several measurements of the same quantities. C249100400009 STATUS (TABLE) Table II, page 1819. C249100400010 ENDBIB 8 0 C249100400011 COMMON 1 3 C249100400012 EN C249100400013 MEV C249100400014 16.0 C249100400015 ENDCOMMON 3 0 C249100400016 DATA 6 1 C249100400017 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MISC MISC-ERR C249100400018 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM C249100400019 99.7 0.5 127.3 0.5 16.9 0.5C249100400020 ENDDATA 3 0 C249100400021 ENDSUBENT 20 0 C249100499999 SUBENT C2491005 20200303 C192C249100500001 BIB 5 7 C249100500002 REACTION (88-RA-226(P,F)MASS,PRE,KE) C249100500003 SAMPLE 50 microg/cm2 thickness. C249100500004 MISC-COL (MISC) The standard deviation of the total kinetic C249100500005 energy distribution. C249100500006 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249100500007 between several measurements of the same quantities. C249100500008 STATUS (TABLE) Table II, page 1819. C249100500009 ENDBIB 7 0 C249100500010 COMMON 3 3 C249100500011 EN MASS-MIN MASS-MAX C249100500012 MEV NO-DIM NO-DIM C249100500013 16.0 75.0 190.0 C249100500014 ENDCOMMON 3 0 C249100500015 DATA 4 1 C249100500016 DATA DATA-ERR MISC MISC-ERR C249100500017 MEV MEV MEV MEV C249100500018 156.0 1.0 11.2 0.2 C249100500019 ENDDATA 3 0 C249100500020 ENDSUBENT 19 0 C249100599999 SUBENT C2491006 20200303 C192C249100600001 BIB 5 8 C249100600002 REACTION 1(90-TH-232(A,F),PRE,AP,LF) C249100600003 2(90-TH-232(A,F),PRE,AP,HF) C249100600004 SAMPLE 30 microg/cm2 thickness. C249100600005 MISC-COL (MISC) The standard deviation of the mass C249100600006 distribution. C249100600007 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249100600008 between several measurements of the same quantities. C249100600009 STATUS (TABLE) Table II, page 1819. C249100600010 ENDBIB 8 0 C249100600011 COMMON 1 3 C249100600012 EN C249100600013 MEV C249100600014 45.0 C249100600015 ENDCOMMON 3 0 C249100600016 DATA 6 1 C249100600017 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MISC MISC-ERR C249100600018 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM C249100600019 100.9 0.5 132.1 0.5 18.0 0.2C249100600020 ENDDATA 3 0 C249100600021 ENDSUBENT 20 0 C249100699999 SUBENT C2491007 20200303 C192C249100700001 BIB 5 7 C249100700002 REACTION (90-TH-232(A,F)MASS,PRE,KE) C249100700003 SAMPLE 30 microg/cm2 thickness. C249100700004 MISC-COL (MISC) The standard deviation of the total kinetic C249100700005 energy distribution. C249100700006 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249100700007 between several measurements of the same quantities. C249100700008 STATUS (TABLE) Table II, page 1819. C249100700009 ENDBIB 7 0 C249100700010 COMMON 3 3 C249100700011 EN MASS-MIN MASS-MAX C249100700012 MEV NO-DIM NO-DIM C249100700013 45.0 80.0 200.0 C249100700014 ENDCOMMON 3 0 C249100700015 DATA 4 1 C249100700016 DATA DATA-ERR MISC MISC-ERR C249100700017 MEV MEV MEV MEV C249100700018 166.0 1.0 11.3 0.3 C249100700019 ENDDATA 3 0 C249100700020 ENDSUBENT 19 0 C249100799999 SUBENT C2491008 20200303 C192C249100800001 BIB 5 8 C249100800002 REACTION 1(92-U-233(A,F),PRE,AP,LF) C249100800003 2(92-U-233(A,F),PRE,AP,HF) C249100800004 SAMPLE 20 microg/cm2 thickness. C249100800005 MISC-COL (MISC) The standard deviation of the mass C249100800006 distribution. C249100800007 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249100800008 between several measurements of the same quantities. C249100800009 STATUS (TABLE) Table II, page 1819. C249100800010 ENDBIB 8 0 C249100800011 COMMON 1 3 C249100800012 EN C249100800013 MEV C249100800014 45.0 C249100800015 ENDCOMMON 3 0 C249100800016 DATA 6 1 C249100800017 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MISC MISC-ERR C249100800018 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM C249100800019 102.9 0.5 131.1 0.5 16.6 0.2C249100800020 ENDDATA 3 0 C249100800021 ENDSUBENT 20 0 C249100899999 SUBENT C2491009 20200303 C192C249100900001 BIB 5 7 C249100900002 REACTION (92-U-233(A,F)MASS,PRE,KE) C249100900003 SAMPLE 20 microg/cm2 thickness. C249100900004 MISC-COL (MISC) The standard deviation of the total kinetic C249100900005 energy distribution. C249100900006 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249100900007 between several measurements of the same quantities. C249100900008 STATUS (TABLE) Table II, page 1819. C249100900009 ENDBIB 7 0 C249100900010 COMMON 3 3 C249100900011 EN MASS-MIN MASS-MAX C249100900012 MEV NO-DIM NO-DIM C249100900013 45.0 80.0 210.0 C249100900014 ENDCOMMON 3 0 C249100900015 DATA 4 1 C249100900016 DATA DATA-ERR MISC MISC-ERR C249100900017 MEV MEV MEV MEV C249100900018 172.4 1.0 12.1 0.3 C249100900019 ENDDATA 3 0 C249100900020 ENDSUBENT 19 0 C249100999999 SUBENT C2491010 20200303 C192C249101000001 BIB 5 8 C249101000002 REACTION 1(92-U-238(A,F),PRE,AP,LF) C249101000003 2(92-U-238(A,F),PRE,AP,HF) C249101000004 SAMPLE 20 microg/cm2 thickness. C249101000005 MISC-COL (MISC) The standard deviation of the mass C249101000006 distribution. C249101000007 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249101000008 between several measurements of the same quantities. C249101000009 STATUS (TABLE) Table II, page 1819. C249101000010 ENDBIB 8 0 C249101000011 COMMON 1 3 C249101000012 EN C249101000013 MEV C249101000014 45.0 C249101000015 ENDCOMMON 3 0 C249101000016 DATA 6 1 C249101000017 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MISC MISC-ERR C249101000018 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM C249101000019 104.5 0.5 134.5 0.5 17.3 0.2C249101000020 ENDDATA 3 0 C249101000021 ENDSUBENT 20 0 C249101099999 SUBENT C2491011 20200303 C192C249101100001 BIB 5 7 C249101100002 REACTION (92-U-238(A,F)MASS,PRE,KE) C249101100003 SAMPLE 20 microg/cm2 thickness. C249101100004 MISC-COL (MISC) The standard deviation of the total kinetic C249101100005 energy distribution. C249101100006 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249101100007 between several measurements of the same quantities. C249101100008 STATUS (TABLE) Table II, page 1819. C249101100009 ENDBIB 7 0 C249101100010 COMMON 3 3 C249101100011 EN MASS-MIN MASS-MAX C249101100012 MEV NO-DIM NO-DIM C249101100013 45.0 80.0 210.0 C249101100014 ENDCOMMON 3 0 C249101100015 DATA 4 1 C249101100016 DATA DATA-ERR MISC MISC-ERR C249101100017 MEV MEV MEV MEV C249101100018 174.0 1.0 12.0 0.4 C249101100019 ENDDATA 3 0 C249101100020 ENDSUBENT 19 0 C249101199999 SUBENT C2491012 20200303 C192C249101200001 BIB 5 8 C249101200002 REACTION 1(94-PU-239(A,F),PRE,AP,LF) C249101200003 2(94-PU-239(A,F),PRE,AP,HF) C249101200004 SAMPLE 20 microg/cm2 thickness. C249101200005 MISC-COL (MISC) The standard deviation of the mass C249101200006 distribution. C249101200007 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249101200008 between several measurements of the same quantities. C249101200009 STATUS (TABLE) Table II, page 1819. C249101200010 ENDBIB 8 0 C249101200011 COMMON 1 3 C249101200012 EN C249101200013 MEV C249101200014 45.0 C249101200015 ENDCOMMON 3 0 C249101200016 DATA 6 1 C249101200017 DATA 1DATA-ERR 1DATA 2DATA-ERR 2MISC MISC-ERR C249101200018 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM C249101200019 105.8 0.5 134.2 0.5 16.7 0.2C249101200020 ENDDATA 3 0 C249101200021 ENDSUBENT 20 0 C249101299999 SUBENT C2491013 20200303 C192C249101300001 BIB 5 7 C249101300002 REACTION (94-PU-239(A,F)MASS,PRE,KE) C249101300003 SAMPLE 20 microg/cm2 thickness. C249101300004 MISC-COL (MISC) The standard deviation of the total kinetic C249101300005 energy distribution. C249101300006 ERR-ANALYS (DATA-ERR) The errors were estimated from differences C249101300007 between several measurements of the same quantities. C249101300008 STATUS (TABLE) Table II, page 1819. C249101300009 ENDBIB 7 0 C249101300010 COMMON 3 3 C249101300011 EN MASS-MIN MASS-MAX C249101300012 MEV NO-DIM NO-DIM C249101300013 45.0 80.0 220.0 C249101300014 ENDCOMMON 3 0 C249101300015 DATA 4 1 C249101300016 DATA DATA-ERR MISC MISC-ERR C249101300017 MEV MEV MEV MEV C249101300018 182.5 1.0 12.8 0.4 C249101300019 ENDDATA 3 0 C249101300020 ENDSUBENT 19 0 C249101399999 SUBENT C2491014 20200303 C192C249101400001 BIB 5 7 C249101400002 REACTION (88-RA-226(P,F),PR,NU) C249101400003 SAMPLE 50 microg/cm2 thickness. C249101400004 ERR-ANALYS (DATA-ERR) The errors shown are due to the C249101400005 uncertainty in the neutron detection efficiency. C249101400006 MISC-COL (MISC1) No.of pre-fission neutrons per fission C249101400007 (MISC2) No.of post-fission neutrons per fission C249101400008 STATUS (TABLE) Table IV, page 1821. C249101400009 ENDBIB 7 0 C249101400010 NOCOMMON 0 0 C249101400011 DATA 7 1 C249101400012 EN DATA DATA-ERR MISC1 MISC1-ERR MISC2 C249101400013 MISC2-ERR C249101400014 MEV PRT/FIS PRT/FIS PRT/FIS PRT/FIS PRT/FIS C249101400015 PRT/FIS C249101400016 16.0 4.1 0.3 0.5 0.3 3.6C249101400017 0.4 C249101400018 ENDDATA 6 0 C249101400019 ENDSUBENT 18 0 C249101499999 SUBENT C2491015 20200303 C192C249101500001 BIB 5 7 C249101500002 REACTION (90-TH-232(A,F),PR,NU) C249101500003 SAMPLE 30 microg/cm2 thickness. C249101500004 ERR-ANALYS (DATA-ERR) The errors shown are due to the C249101500005 uncertainty in the neutron detection efficiency. C249101500006 MISC-COL (MISC1) No.of pre-fission neutrons per fission C249101500007 (MISC2) No.of post-fission neutrons per fission C249101500008 STATUS (TABLE) Table IV, page 1821. C249101500009 ENDBIB 7 0 C249101500010 NOCOMMON 0 0 C249101500011 DATA 7 1 C249101500012 EN DATA DATA-ERR MISC1 MISC1-ERR MISC2 C249101500013 MISC2-ERR C249101500014 MEV PRT/FIS PRT/FIS PRT/FIS PRT/FIS PRT/FIS C249101500015 PRT/FIS C249101500016 45.0 7.3 0.8 2.9 0.9 4.4C249101500017 0.3 C249101500018 ENDDATA 6 0 C249101500019 ENDSUBENT 18 0 C249101599999 SUBENT C2491016 20200303 C192C249101600001 BIB 5 7 C249101600002 REACTION (92-U-233(A,F),PR,NU) C249101600003 SAMPLE 20 microg/cm2 thickness. C249101600004 ERR-ANALYS (DATA-ERR) The errors shown are due to the C249101600005 uncertainty in the neutron detection efficiency. C249101600006 MISC-COL (MISC1) No.of pre-fission neutrons per fission C249101600007 (MISC2) No.of post-fission neutrons per fission C249101600008 STATUS (TABLE) Table IV, page 1821. C249101600009 ENDBIB 7 0 C249101600010 NOCOMMON 0 0 C249101600011 DATA 7 1 C249101600012 EN DATA DATA-ERR MISC1 MISC1-ERR MISC2 C249101600013 MISC2-ERR C249101600014 MEV PRT/FIS PRT/FIS PRT/FIS PRT/FIS PRT/FIS C249101600015 PRT/FIS C249101600016 45.0 7.5 1.1 3.3 1.5 4.2C249101600017 0.7 C249101600018 ENDDATA 6 0 C249101600019 ENDSUBENT 18 0 C249101699999 SUBENT C2491017 20200303 C192C249101700001 BIB 5 7 C249101700002 REACTION (92-U-238(A,F),PR,NU) C249101700003 SAMPLE 20 microg/cm2 thickness. C249101700004 ERR-ANALYS (DATA-ERR) The errors shown are due to the C249101700005 uncertainty in the neutron detection efficiency. C249101700006 MISC-COL (MISC1) No.of pre-fission neutrons per fission C249101700007 (MISC2) No.of post-fission neutrons per fission C249101700008 STATUS (TABLE) Table IV, page 1821. C249101700009 ENDBIB 7 0 C249101700010 NOCOMMON 0 0 C249101700011 DATA 7 1 C249101700012 EN DATA DATA-ERR MISC1 MISC1-ERR MISC2 C249101700013 MISC2-ERR C249101700014 MEV PRT/FIS PRT/FIS PRT/FIS PRT/FIS PRT/FIS C249101700015 PRT/FIS C249101700016 45.0 8.2 1.1 3.6 1.6 4.6C249101700017 0.7 C249101700018 ENDDATA 6 0 C249101700019 ENDSUBENT 18 0 C249101799999 SUBENT C2491018 20200303 C192C249101800001 BIB 5 7 C249101800002 REACTION (94-PU-239(A,F),PR,NU) C249101800003 SAMPLE 20 microg/cm2 thickness. C249101800004 ERR-ANALYS (DATA-ERR) The errors shown are due to the C249101800005 uncertainty in the neutron detection efficiency. C249101800006 MISC-COL (MISC1) No.of pre-fission neutrons per fission C249101800007 (MISC2) No.of post-fission neutrons per fission C249101800008 STATUS (TABLE) Table IV, page 1821. C249101800009 ENDBIB 7 0 C249101800010 NOCOMMON 0 0 C249101800011 DATA 7 1 C249101800012 EN DATA DATA-ERR MISC1 MISC1-ERR MISC2 C249101800013 MISC2-ERR C249101800014 MEV PRT/FIS PRT/FIS PRT/FIS PRT/FIS PRT/FIS C249101800015 PRT/FIS C249101800016 45.0 7.8 0.8 2.7 0.8 5.1C249101800017 0.3 C249101800018 ENDDATA 6 0 C249101800019 ENDSUBENT 18 0 C249101899999 ENDENTRY 18 0 C249199999999