ENTRY 21788 20220208 23092178800000001 SUBENT 21788001 20220208 23092178800100001 BIB 14 62 2178800100002 TITLE Energy and mass distributions for Pu-241(n-th,f), 2178800100003 Pu-242(s.f.) and Pu-244(s.f.) fragments 2178800100004 AUTHOR (E.Allaert, C.Wagemans, G.Wegener-Penning, 2178800100005 A.J.Deruytter, R.Barthelemy) 2178800100006 INSTITUTE (2ZZZGEL) Experimental site. A.J.D.,R.B. 2178800100007 (2BLGMOL) E.A.,C.W.,G.W-P. 2178800100008 REFERENCE (J,NP/A,380,61,1982) 2178800100009 (C,82ANTWER,,737,1982) 2178800100010 (P,INDC(EUR)-16,4,1982) 2178800100011 FACILITY (LINAC,2ZZZGEL) Linear accelerator GELINA. 2178800100012 SAMPLE Combined Pu-241- Pu-242 target, consisting of 2178800100013 26 ug/cm2 Pu-241 and 20 ug/cm2 Pu-242, sandwiched 2178800100014 between 30 ug/cm2 thick polyimide backings. 2178800100015 Pu-244, thickness 30 ug, sandwiched the same. 2178800100016 Isotopic enrichments: Pu-241(91.0%), 2178800100017 Pu-242(99.8%), Pu-244(87.6%). 2178800100018 METHOD (COINC,TOF,STTA) 2178800100019 Fast and slow coincidence to measure the pulse- 2178800100020 heights of the fission fragments, 2178800100021 For the thermal fission combined with time-of- 2178800100022 flight difference between fission fragments, used 2178800100023 as a coherence test to reject badly measured data. 2178800100024 The combined Pu-241 / Pu-242 target was turned by 2178800100025 180 degree , when measuring the s.f.- data, in order 2178800100026 to maintain the same energy loss conditions for 2178800100027 both measurements. 2178800100028 DETECTOR (SIBAR) 2178800100029 Two cooled silicon surface barrier detectors. 2178800100030 For energy calibration the natural alpha-lines 2178800100031 of the Pu-isotopes were used. 2178800100032 ANALYSIS Schmitt-Neiler calibration procedure (ref. 2178800100033 C,65SALZBURG,1,531,1965) to convert pulse-heights to 2178800100034 kinetic energies and masses. 2178800100035 For the therm.fission the pre-neutron emission data 2178800100036 were obtained via an iterative calculation described 2178800100037 by Schmitt+ (PR,141,1146,1966). For the s.f. the data 2178800100038 of Caitucoli+ (NP/A,369,15,1981) and Mughabghab and 2178800100039 Garber,BNL 325(1973) were used (see REL-REF). 2178800100040 REL-REF (M,,H.W.Schmitt+,J,PR,141,1146,1966) 2178800100041 (M,21758001,F.Caitucoli+,J,NP/A,369,15,1981) 2178800100042 (M,,S.F.Mughabghab+,R,BNL-325,1973) 2178800100043 (M,,B.D.Wilkins+,J,PR/C,14,1832,1976) 2178800100044 ADD-RES The main goal of the experiment was intercomparison 2178800100045 of the thermal and the spontaneous fission data. The 2178800100046 s.f. results are very similar, but strongly different 2178800100047 from the n-th. data. 2178800100048 Results are interpreted using the scission point 2178800100049 model of Wilkins+ (PR/C,14,1832,1976). 2178800100050 CORRECTION Data corrected for neutron emission. 2178800100051 The pre-neutron emission data for fragment mass 2178800100052 and energy distribution are given in the reference. 2178800100053 STATUS (TABLE) Table 1 of Nucl.Phys.A380(1982)61 2178800100054 HISTORY (19820730C) B.N. 2178800100055 (19830131A) A.P.T. Laboratory codes corrected. 2178800100056 (19830919A) A.P.T. Subentry 1 common section moved to 2178800100057 subentry 2 and energy unit heading corrected.2178800100058 (19840601A) A.P.T. Subentries 2,3,4 split into two 2178800100059 to separate mass and charge data 2178800100060 (20090401A) Date is corrected. BIB information updated.2178800100061 Upper case to low case converted 2178800100062 (20121108U) SD: INC-SOURCE moved to Subents 002, 005. 2178800100063 (20220208U) SD: Ref. INDC(EUR)-16,4,1982 added. 2178800100064 ENDBIB 62 0 2178800100065 NOCOMMON 0 0 2178800100066 ENDSUBENT 65 0 2178800199999 SUBENT 21788002 20121108 22342178800200001 BIB 4 9 2178800200002 REACTION 1(94-PU-241(N,F),SEC,AKE,LF+HF,MXW) Aver.Kin.Energy 2178800200003 2(94-PU-241(N,F),PRE,AKE,LF+HF,MXW) Aver.Kin.Energy 2178800200004 INC-SOURCE (PHOTO) .Thermal neutrons selected by time-of-flight 2178800200005 out of the moderated N-spectrum produced by GELINA. 2178800200006 ERR-ANALYS (ERR-S) Statistical errors are given 2178800200007 HISTORY (19840601A) A.P.T. Mass data moved to subentry 5 2178800200008 (20090401A) ERR-ANALYS keyword and new REACTION line 2178800200009 with pointer 2 added. SF7 changed to LF+HF 2178800200010 (20121108U) SD: INC-SOURCE was added 2178800200011 ENDBIB 9 0 2178800200012 COMMON 1 3 2178800200013 EN-DUMMY 2178800200014 EV 2178800200015 2.53E-02 2178800200016 ENDCOMMON 3 0 2178800200017 DATA 4 1 2178800200018 DATA 1ERR-S 1DATA 2ERR-S 2 2178800200019 MEV MEV MEV MEV 2178800200020 1.7656E+02 7.E-02 1.7897E+02 7.E-02 2178800200021 ENDDATA 3 0 2178800200022 ENDSUBENT 21 0 2178800299999 SUBENT 21788003 20090401 22112178800300001 BIB 3 6 2178800300002 REACTION 1(94-PU-242(0,F),SEC,AKE,LF+HF) Aver.Kin.Energy 2178800300003 2(94-PU-242(0,F),PRE,AKE,LF+HF) Aver.Kin.Energy 2178800300004 ERR-ANALYS (ERR-S) Statistical errors are given 2178800300005 HISTORY (19840601A) A.P.T. Mass data moved to subentry 6 2178800300006 (20090401A) ERR-ANALYS keyword and REACTION pointer 2 2178800300007 added. SF7 changed to LF+HF. SF5 pt.1 added 2178800300008 ENDBIB 6 0 2178800300009 NOCOMMON 0 0 2178800300010 DATA 4 1 2178800300011 DATA 1ERR-S 1DATA 2ERR-S 2 2178800300012 MEV MEV MEV MEV 2178800300013 1.8003E+02 9.E-02 1.8178E+02 9.E-02 2178800300014 ENDDATA 3 0 2178800300015 ENDSUBENT 14 0 2178800399999 SUBENT 21788004 20090401 22112178800400001 BIB 3 7 2178800400002 REACTION 1(94-PU-244(0,F),SEC,AKE,LF+HF) Aver.Kin.Energy 2178800400003 2(94-PU-244(0,F),PRE,AKE,LF+HF) Aver.Kin.Energy 2178800400004 ERR-ANALYS (DATA-ERR) Statistical errors are given and 2178800400005 error due to energy loss corrections. 2178800400006 HISTORY (19840601A) A.P.T. Mass data moved to subentry 7 2178800400007 (20090401A) ERR-ANALYS keyword and REACTION line 2178800400008 pointer 2 added. SF7 changed to LF+HF. 2178800400009 ENDBIB 7 0 2178800400010 NOCOMMON 0 0 2178800400011 DATA 4 1 2178800400012 DATA 1DATA-ERR 1DATA 2DATA-ERR 2 2178800400013 MEV MEV MEV MEV 2178800400014 1.82E+02 1. 1.84E+02 1. 2178800400015 ENDDATA 3 0 2178800400016 ENDSUBENT 15 0 2178800499999 SUBENT 21788005 20121108 22342178800500001 BIB 4 11 2178800500002 REACTION 1(94-PU-241(N,F),SEC,AP,LF,MXW) Aver.Mass of light frag.2178800500003 2(94-PU-241(N,F),SEC,AP,HF,MXW) Aver.Mass of heavy frag.2178800500004 3(94-PU-241(N,F),PRE,AP,LF,MXW) Aver.Mass of light frag.2178800500005 4(94-PU-241(N,F),PRE,AP,HF,MXW) Aver.Mass of heavy frag.2178800500006 INC-SOURCE (PHOTO) .Thermal neutrons selected by time-of-flight 2178800500007 out of the moderated N-spectrum produced by GELINA. 2178800500008 ERR-ANALYS (ERR-S) Statistical errors are given 2178800500009 HISTORY (19850419E) 2178800500010 (20090401A) ERR-ANALYS keyword and REACTION lines 2178800500011 pointers 3, 4 added. SF5 = SEC for pt.1-2 added 2178800500012 (20121108U) SD: INC-SOURCE was added 2178800500013 ENDBIB 11 0 2178800500014 COMMON 1 3 2178800500015 EN-DUMMY 2178800500016 EV 2178800500017 2.53E-02 2178800500018 ENDCOMMON 3 0 2178800500019 DATA 8 1 2178800500020 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 32178800500021 DATA 4ERR-S 4 2178800500022 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 2178800500023 NO-DIM NO-DIM 2178800500024 1.0064E+02 4.E-02 1.3845E+02 4.E-02 1.0245E+02 4.E-022178800500025 1.3955E+02 4.E-02 2178800500026 ENDDATA 6 0 2178800500027 ENDSUBENT 26 0 2178800599999 SUBENT 21788006 20090401 22112178800600001 BIB 3 8 2178800600002 REACTION 1(94-PU-242(0,F),SEC,AP,LF) Aver.Mass of light frag. 2178800600003 2(94-PU-242(0,F),SEC,AP,HF) Aver.Mass of heavy frag. 2178800600004 3(94-PU-242(0,F),PRE,AP,LF) Aver.Mass of light frag. 2178800600005 4(94-PU-242(0,F),PRE,AP,HF) Aver.Mass of heavy frag. 2178800600006 ERR-ANALYS (ERR-S) Statistical errors are given 2178800600007 HISTORY (19850419E) 2178800600008 (20090401A) ERR-ANALYS keyword and REACTION lines 2178800600009 pointers 3, 4 and SF5 = SEC pt. 1-2 added 2178800600010 ENDBIB 8 0 2178800600011 NOCOMMON 0 0 2178800600012 DATA 8 1 2178800600013 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 32178800600014 DATA 4ERR-S 4 2178800600015 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 2178800600016 NO-DIM NO-DIM 2178800600017 1.0312E+02 5.E-02 1.3677E+02 5.E-02 1.0450E+02 5.E-022178800600018 1.3750E+02 5.E-02 2178800600019 ENDDATA 6 0 2178800600020 ENDSUBENT 19 0 2178800699999 SUBENT 21788007 20090401 22112178800700001 BIB 3 8 2178800700002 REACTION 1(94-PU-244(0,F),SEC,AP,LF) Aver.Mass of light frag. 2178800700003 2(94-PU-244(0,F),SEC,AP,HF) Aver.Mass of heavy frag. 2178800700004 3(94-PU-244(0,F),PRE,AP,LF) Aver.Mass of light frag. 2178800700005 4(94-PU-244(0,F),PRE,AP,HF) Aver.Mass of heavy frag. 2178800700006 ERR-ANALYS (ERR-S) Statistical errors are given 2178800700007 HISTORY (19850419E) 2178800700008 (20090401A) ERR-ANALYS keyword and REACTION lines 2178800700009 pointers 3, 4 and SF5 = SEC pt. 1-2 added 2178800700010 ENDBIB 8 0 2178800700011 NOCOMMON 0 0 2178800700012 DATA 8 1 2178800700013 DATA 1ERR-S 1DATA 2ERR-S 2DATA 3ERR-S 32178800700014 DATA 4ERR-S 4 2178800700015 NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM NO-DIM 2178800700016 NO-DIM NO-DIM 2178800700017 1.0476E+02 8.E-02 1.3692E+02 8.E-02 1.0631E+02 8.E-022178800700018 1.3769E+02 8.E-02 2178800700019 ENDDATA 6 0 2178800700020 ENDSUBENT 19 0 2178800799999 ENDENTRY 7 0 2178899999999