ENTRY O1708 20221216 O092O1708 0 1 SUBENT O1708001 20221216 O092O1708 1 1 BIB 10 45 O1708 1 2 TITLE Proton-induced fission on actinide nuclei at energies O1708 1 3 27 and 63 MeV. O1708 1 4 AUTHOR (S.Isaev, R.Prieels, Th.Keutgen, J.van Mol, Y.El Masri,O1708 1 5 P.Demetriou) O1708 1 6 REFERENCE (J,NP/A,809,1,2008) O1708 1 7 (C,2007CORSEN,,55,2007) data only on figs. O1708 1 8 INSTITUTE (2BLGLVN,2GRCATH) O1708 1 9 FACILITY (CYCLO,2BLGLVN) Louvain-La-Neuve (LLN) Cyclotron O1708 1 10 facility CYCLONE O1708 1 11 METHOD (TOF) O1708 1 12 (COINC) neutron and fission fragments in coincidence O1708 1 13 DETECTOR (SPEC) Three different types of detectors were used- O1708 1 14 Two microchannel Si-diode detector, two large positionO1708 1 15 sensitive Multi-Wire Proportional gas Counters(MWPC), O1708 1 16 69 liquid-scintillator cells allowed the determinationO1708 1 17 of the neutron energy and angular distributions O1708 1 18 associated with the fission process(DEMON O1708 1 19 multidetector).Each DEMON counter, consisting of an O1708 1 20 active volume of 16 cm diameter by 20 cm depth, is O1708 1 21 filled with NE213 liquid-type scintillator. O1708 1 22 (SI) In order to monitor the reaction chamber residual O1708 1 23 activity(contamination from the target sputtering O1708 1 24 under the beam impact), up to three thin Si detectorsO1708 1 25 shielded from the target by thick aluminum blocks, O1708 1 26 allow the detection of the 5 MeV alpha-type particlesO1708 1 27 emitted by the eventual actinide material O1708 1 28 contamination in the reaction chamber wall. O1708 1 29 (MWPC) for fission fragments O1708 1 30 (SCIN) Neutrons were detected with the multidetector O1708 1 31 DEMON. O1708 1 32 SAMPLE The targets were sealed between two C-12 layers, thick O1708 1 33 enough(50 mug/cm**2) to stop either the recoiling O1708 1 34 target nucleus or the evaporation heavy residues of theO1708 1 35 reactions but not the fission fragments. The targets O1708 1 36 themselves had the following thickness-Th-232 145 mug/ O1708 1 37 cm**2, Np-237 159 mug/cm**2, U-238 180 mug/cm**2, O1708 1 38 Pu-239 106 mug/cm**2, Am-241 124 mug/cm**2. O1708 1 39 ERR-ANALYS (ERR-1) The uncertainty in the target thickness. O1708 1 40 (main source of systematic uncertainties) O1708 1 41 HISTORY (20090109C) SB O1708 1 42 (20120614U) SD: a few keywords DETECTOR O1708 1 43 moved to right position O1708 1 44 (20180630U) SD: Ref. 2007CORSEN,,55 added. Small O1708 1 45 corrections in all Subents. STATUS moved to Subents. O1708 1 46 (20221216A) SD: Corrections in Subents 007-011. O1708 1 47 ENDBIB 45 0 O1708 1 48 COMMON 1 3 O1708 1 49 ERR-1 O1708 1 50 PER-CENT O1708 1 51 5. O1708 1 52 ENDCOMMON 3 0 O1708 1 53 ENDSUBENT 52 0 O1708 199999 SUBENT O1708002 20180630 O066O1708 2 1 BIB 4 4 O1708 2 2 REACTION (90-TH-232(P,F),,SIG) O1708 2 3 ERR-ANALYS (ERR-T) total uncertainty O1708 2 4 STATUS (TABLE) Tbl. 1 from Nucl.Phys.A809,p.1(2008) O1708 2 5 HISTORY (20180630U) SD: ERR-ANALYS was updated.DATA-ERR->ERR-T.O1708 2 6 ENDBIB 4 0 O1708 2 7 NOCOMMON 0 0 O1708 2 8 DATA 3 2 O1708 2 9 EN DATA ERR-T O1708 2 10 MEV MB MB O1708 2 11 26.5 1190. 60. O1708 2 12 62.9 1550. 78. O1708 2 13 ENDDATA 4 0 O1708 2 14 ENDSUBENT 13 0 O1708 299999 SUBENT O1708003 20180630 O066O1708 3 1 BIB 4 4 O1708 3 2 REACTION (92-U-238(P,F),,SIG) O1708 3 3 ERR-ANALYS (ERR-T) total uncertainty O1708 3 4 STATUS (TABLE) Tbl. 1 from Nucl.Phys.A809,p.1(2008) O1708 3 5 HISTORY (20180630U) SD: ERR-ANALYS was updated.DATA-ERR->ERR-T.O1708 3 6 ENDBIB 4 0 O1708 3 7 NOCOMMON 0 0 O1708 3 8 DATA 3 2 O1708 3 9 EN DATA ERR-T O1708 3 10 MEV MB MB O1708 3 11 26.5 1540. 77. O1708 3 12 62.9 1980. 99. O1708 3 13 ENDDATA 4 0 O1708 3 14 ENDSUBENT 13 0 O1708 399999 SUBENT O1708004 20180630 O066O1708 4 1 BIB 4 9 O1708 4 2 REACTION (93-NP-237(P,F),,SIG) O1708 4 3 ERR-ANALYS (ERR-T) total uncertainty. O1708 4 4 The uncertainty is reported by authors in O1708 4 5 table-the experimental uncertainties for the Np-237 O1708 4 6 cross sections were doubled with respect to the O1708 4 7 statistical errors in order to account for the target O1708 4 8 inhomogeneity. O1708 4 9 STATUS (TABLE) Tbl. 1 from Nucl.Phys.A809,p.1(2008) O1708 4 10 HISTORY (20180630U) SD: ERR-ANALYS was updated.DATA-ERR->ERR-T.O1708 4 11 ENDBIB 9 0 O1708 4 12 NOCOMMON 0 0 O1708 4 13 DATA 3 2 O1708 4 14 EN DATA ERR-T O1708 4 15 MEV MB MB O1708 4 16 26.5 1170. 118. O1708 4 17 62.9 1830. 184. O1708 4 18 ENDDATA 4 0 O1708 4 19 ENDSUBENT 18 0 O1708 499999 SUBENT O1708005 20180630 O066O1708 5 1 BIB 4 4 O1708 5 2 REACTION (94-PU-239(P,F),,SIG) O1708 5 3 ERR-ANALYS (ERR-T) total uncertainty O1708 5 4 STATUS (TABLE) Tbl. 1 from Nucl.Phys.A809,p.1(2008) O1708 5 5 HISTORY (20180630U) SD: ERR-ANALYS was updated.DATA-ERR->ERR-T.O1708 5 6 ENDBIB 4 0 O1708 5 7 NOCOMMON 0 0 O1708 5 8 DATA 3 2 O1708 5 9 EN DATA ERR-T O1708 5 10 MEV MB MB O1708 5 11 26.5 1760. 88. O1708 5 12 62.9 2320. 116. O1708 5 13 ENDDATA 4 0 O1708 5 14 ENDSUBENT 13 0 O1708 599999 SUBENT O1708006 20180630 O066O1708 6 1 BIB 4 4 O1708 6 2 REACTION (95-AM-241(P,F),,SIG) O1708 6 3 ERR-ANALYS (ERR-T) total uncertainty O1708 6 4 STATUS (TABLE) Tbl. 1 from Nucl.Phys.A809,p.1(2008) O1708 6 5 HISTORY (20180630U) SD: ERR-ANALYS was updated.DATA-ERR->ERR-T.O1708 6 6 ENDBIB 4 0 O1708 6 7 NOCOMMON 0 0 O1708 6 8 DATA 3 2 O1708 6 9 EN DATA ERR-T O1708 6 10 MEV MB MB O1708 6 11 26.5 1650. 83. O1708 6 12 62.9 2150. 108. O1708 6 13 ENDDATA 4 0 O1708 6 14 ENDSUBENT 13 0 O1708 699999 SUBENT O1708007 20221216 O092O1708 7 1 BIB 6 31 O1708 7 2 REACTION 1(90-TH-232(P,F),PRE,KE,LF+HF) O1708 7 3 2(90-TH-232(P,F),,NU,,MSC) pre-scission neutron O1708 7 4 multiplicity O1708 7 5 3(90-TH-232(P,F),,NU,,MSC) compound nucleus neutron O1708 7 6 multiplicity. O1708 7 7 4(90-TH-232(P,F),,NU,,MSC) post-scission neutron O1708 7 8 multiplicity. O1708 7 9 ANALYSIS The relative contributions of pre-equilibrium neutron O1708 7 10 emission and compound nucleus evaporation, as well as O1708 7 11 of post-scission evaporation from the fission fragmentsO1708 7 12 were analyzed with moving multisource fits- O1708 7 13 -the emission spectra of neutron from a compound O1708 7 14 nuclei are described by a Maxwellian type distribution.O1708 7 15 -the spectra for neutron emitted from the FFs are O1708 7 16 described by the Watt distribution. O1708 7 17 -the PE source is not thermally equilibrated, the O1708 7 18 surface source form used to fit the corresponding O1708 7 19 curves and the fitting parameter are non-physical and O1708 7 20 hence inadequate to describe PE neutron emission. O1708 7 21 Due to the very weak PE contributions, the preceding O1708 7 22 observation will not significantly affect the results O1708 7 23 of the other source contribution. O1708 7 24 CORRECTION Corrected for neutron emissions based on the measured O1708 7 25 neutron angular and multiplicity distributions O1708 7 26 measured by the DEMON scintillator O1708 7 27 ERR-ANALYS (DATA-ERR) uncertainties derived from the moving O1708 7 28 multisource fits for symmetric (sym) mass partitions O1708 7 29 STATUS (TABLE) Tbl. 2 from Nucl.Phys.A809,p.1(2008) O1708 7 30 HISTORY (20180630U) SD: ERR-ANALYS was updated. O1708 7 31 (20221216A) SD: SF5=PRE; SF6=AKE -> KE; SF7=FF -> LF+HFO1708 7 32 in REACTION (1). Col.DATA -> DATA-ERR for REACTION (2).O1708 7 33 ENDBIB 31 0 O1708 7 34 NOCOMMON 0 0 O1708 7 35 DATA 9 2 O1708 7 36 EN DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3O1708 7 37 DATA-ERR 3DATA 4DATA-ERR 4 O1708 7 38 MEV MEV MEV PRT/FIS PRT/FIS PRT/FIS O1708 7 39 PRT/FIS PRT/FIS PRT/FIS O1708 7 40 26.5 166.3 25.8 0.94 O1708 7 41 0.53 1.48 0.39 O1708 7 42 62.9 173.6 21.8 0.18 0.05 3.47 O1708 7 43 0.35 1.52 0.32 O1708 7 44 ENDDATA 8 0 O1708 7 45 ENDSUBENT 44 0 O1708 799999 SUBENT O1708008 20221216 O092O1708 8 1 BIB 6 30 O1708 8 2 REACTION 1(92-U-238(P,F),PRE,KE,LF+HF) O1708 8 3 2(92-U-238(P,F),,NU,,MSC) pre-scission multiplicity O1708 8 4 3(92-U-238(P,F),,NU,,MSC) compound nucleus neutron O1708 8 5 multiplicity. O1708 8 6 4(92-U-238(P,F),,NU,,MSC) post-scission neutron O1708 8 7 multiplicity. O1708 8 8 ANALYSIS The relative contributions of pre-equilibrium neutron O1708 8 9 emission and compound nucleus evaporation, as well as O1708 8 10 of post-scission evaporation from the fission fragmentsO1708 8 11 were analyzed with moving multisource fits- O1708 8 12 -the emission spectra of neutron from a compound O1708 8 13 nuclei are described by a Maxwellian type distribution.O1708 8 14 -the spectra for neutron emitted from the FFs are O1708 8 15 described by the Watt distribution. O1708 8 16 -the PE source is not thermally equilibrated, the O1708 8 17 surface source form used to fit the corresponding O1708 8 18 curves and the fitting parameter are non-physical and O1708 8 19 hence inadequate to describe PE neutron emission. O1708 8 20 Due to the very weak PE contributions, the preceding O1708 8 21 observation will not significantly affect the results O1708 8 22 of the other source contribution. O1708 8 23 CORRECTION Corrected for neutron emissions based on the measured O1708 8 24 neutron angular and multiplicity distributions O1708 8 25 measured by the DEMON scintillator O1708 8 26 ERR-ANALYS (DATA-ERR) uncertainties derived from the moving O1708 8 27 multisource fits for symmetric (sym) mass partitions O1708 8 28 STATUS (TABLE) Tbl. 2 from Nucl.Phys.A809,p.1(2008) O1708 8 29 HISTORY (20180630U) SD: ERR-ANALYS was updated. O1708 8 30 (20221216A) SD: SF5=PRE; SF6=AKE -> KE; SF7=FF -> LF+HFO1708 8 31 in REACTION (1). Col.DATA -> DATA-ERR for REACTION (2).O1708 8 32 ENDBIB 30 0 O1708 8 33 NOCOMMON 0 0 O1708 8 34 DATA 9 2 O1708 8 35 EN DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3O1708 8 36 DATA-ERR 3DATA 4DATA-ERR 4 O1708 8 37 MEV MEV MEV PRT/FIS PRT/FIS PRT/FIS O1708 8 38 PRT/FIS PRT/FIS PRT/FIS O1708 8 39 26.5 167.6 27.8 1.49 O1708 8 40 0.70 1.63 0.36 O1708 8 41 62.9 172.3 24.1 0.14 0.07 3.01 O1708 8 42 0.26 1.66 0.17 O1708 8 43 ENDDATA 8 0 O1708 8 44 ENDSUBENT 43 0 O1708 899999 SUBENT O1708009 20221216 O092O1708 9 1 BIB 6 30 O1708 9 2 REACTION 1(93-NP-237(P,F),PRE,KE,LF+HF) O1708 9 3 2(93-NP-237(P,F),,NU,,MSC) pre-scission multiplicity O1708 9 4 3(93-NP-237(P,F),,NU,,MSC) compound nucleus neutron O1708 9 5 multiplicity. O1708 9 6 4(93-NP-237(P,F),,NU,,MSC) post-scission neutron O1708 9 7 multiplicity. O1708 9 8 ANALYSIS The relative contributions of pre-equilibrium neutron O1708 9 9 emission and compound nucleus evaporation, as well as O1708 9 10 of post-scission evaporation from the fission fragmentsO1708 9 11 were analyzed with moving multisource fits- O1708 9 12 -the emission spectra of neutron from a compound O1708 9 13 nuclei are described by a Maxwellian type distribution.O1708 9 14 -the spectra for neutron emitted from the FFs are O1708 9 15 described by the Watt distribution. O1708 9 16 -the PE source is not thermally equilibrated, the O1708 9 17 surface source form used to fit the corresponding O1708 9 18 curves and the fitting parameter are non-physical and O1708 9 19 hence inadequate to describe PE neutron emission. O1708 9 20 Due to the very weak PE contributions, the preceding O1708 9 21 observation will not significantly affect the results O1708 9 22 of the other source contribution. O1708 9 23 CORRECTION Corrected for neutron emissions based on the measured O1708 9 24 neutron angular and multiplicity distributions O1708 9 25 measured by the DEMON scintillator O1708 9 26 ERR-ANALYS (DATA-ERR) uncertainties derived from the moving O1708 9 27 multisource fits for symmetric (sym) mass partitions O1708 9 28 STATUS (TABLE) Tbl. 2 from Nucl.Phys.A809,p.1(2008) O1708 9 29 HISTORY (20180630U) SD: ERR-ANALYS was updated. O1708 9 30 (20221216A) SD: SF5=PRE; SF6=AKE -> KE; SF7=FF -> LF+HFO1708 9 31 in REACTION (1). Col.DATA -> DATA-ERR for REACTION (2).O1708 9 32 ENDBIB 30 0 O1708 9 33 NOCOMMON 0 0 O1708 9 34 DATA 9 2 O1708 9 35 EN DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3O1708 9 36 DATA-ERR 3DATA 4DATA-ERR 4 O1708 9 37 MEV MEV MEV PRT/FIS PRT/FIS PRT/FIS O1708 9 38 PRT/FIS PRT/FIS PRT/FIS O1708 9 39 26.5 178.8 32.5 0.85 O1708 9 40 0.51 1.85 0.29 O1708 9 41 62.9 179.1 29.3 0.15 0.07 2.64 O1708 9 42 0.58 1.79 0.44 O1708 9 43 ENDDATA 8 0 O1708 9 44 ENDSUBENT 43 0 O1708 999999 SUBENT O1708010 20221216 O092O1708 10 1 BIB 6 30 O1708 10 2 REACTION 1(94-PU-239(P,F),PRE,KE,LF+HF) O1708 10 3 2(94-PU-239(P,F),,NU,,MSC) pre-scission multiplicity O1708 10 4 3(94-PU-239(P,F),,NU,,MSC) compound nucleus neutron O1708 10 5 multiplicity. O1708 10 6 4(94-PU-239(P,F),,NU,,MSC) post-scission neutron O1708 10 7 multiplicity. O1708 10 8 ANALYSIS The relative contributions of pre-equilibrium neutron O1708 10 9 emission and compound nucleus evaporation, as well as O1708 10 10 of post-scission evaporation from the fission fragmentsO1708 10 11 were analyzed with moving multisource fits- O1708 10 12 -the emission spectra of neutron from a compound O1708 10 13 nuclei are described by a Maxwellian type distribution.O1708 10 14 -the spectra for neutron emitted from the FFs are O1708 10 15 described by the Watt distribution. O1708 10 16 -the PE source is not thermally equilibrated, the O1708 10 17 surface source form used to fit the corresponding O1708 10 18 curves and the fitting parameter are non-physical and O1708 10 19 hence inadequate to describe PE neutron emission. O1708 10 20 Due to the very weak PE contributions, the preceding O1708 10 21 observation will not significantly affect the results O1708 10 22 of the other source contribution. O1708 10 23 CORRECTION Corrected for neutron emissions based on the measured O1708 10 24 neutron angular and multiplicity distributions O1708 10 25 measured by the DEMON scintillator O1708 10 26 ERR-ANALYS (DATA-ERR) uncertainties derived from the moving O1708 10 27 multisource fits for symmetric (sym) mass partitions O1708 10 28 STATUS (TABLE) Tbl. 2 from Nucl.Phys.A809,p.1(2008) O1708 10 29 HISTORY (20180630U) SD: ERR-ANALYS was updated. O1708 10 30 (20221216A) SD: SF5=PRE; SF6=AKE -> KE; SF7=FF -> LF+HFO1708 10 31 in REACTION (1). Col.DATA -> DATA-ERR for REACTION (2).O1708 10 32 ENDBIB 30 0 O1708 10 33 NOCOMMON 0 0 O1708 10 34 DATA 9 2 O1708 10 35 EN DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3O1708 10 36 DATA-ERR 3DATA 4DATA-ERR 4 O1708 10 37 MEV MEV MEV PRT/FIS PRT/FIS PRT/FIS O1708 10 38 PRT/FIS PRT/FIS PRT/FIS O1708 10 39 26.5 171.2 20.1 1.16 O1708 10 40 0.59 2.06 0.15 O1708 10 41 62.9 175.0 21.2 0.16 0.09 2.51 O1708 10 42 0.09 2.07 0.41 O1708 10 43 ENDDATA 8 0 O1708 10 44 ENDSUBENT 43 0 O1708 1099999 SUBENT O1708011 20221216 O092O1708 11 1 BIB 6 30 O1708 11 2 REACTION 1(95-AM-241(P,F),PRE,KE,LF+HF) O1708 11 3 2(95-AM-241(P,F),,NU,,MSC) pre-scission multiplicity O1708 11 4 3(95-AM-241(P,F),,NU,,MSC) compound nucleus neutron O1708 11 5 multiplicity. O1708 11 6 4(95-AM-241(P,F),,NU,,MSC) post-scission neutron O1708 11 7 multiplicity. O1708 11 8 ANALYSIS The relative contributions of pre-equilibrium neutron O1708 11 9 emission and compound nucleus evaporation, as well as O1708 11 10 of post-scission evaporation from the fission fragmentsO1708 11 11 were analyzed with moving multisource fits- O1708 11 12 -the emission spectra of neutron from a compound O1708 11 13 nuclei are described by a Maxwellian type distribution.O1708 11 14 -the spectra for neutron emitted from the FFs are O1708 11 15 described by the Watt distribution. O1708 11 16 -the PE source is not thermally equilibrated, the O1708 11 17 surface source form used to fit the corresponding O1708 11 18 curves and the fitting parameter are non-physical and O1708 11 19 hence inadequate to describe PE neutron emission. O1708 11 20 Due to the very weak PE contributions, the preceding O1708 11 21 observation will not significantly affect the results O1708 11 22 of the other source contribution. O1708 11 23 CORRECTION Corrected for neutron emissions based on the measured O1708 11 24 neutron angular and multiplicity distributions O1708 11 25 measured by the DEMON scintillator O1708 11 26 ERR-ANALYS (DATA-ERR) uncertainties derived from the moving O1708 11 27 multisource fits for symmetric (sym) mass partitions O1708 11 28 STATUS (TABLE) Tbl. 2 from Nucl.Phys.A809,p.1(2008) O1708 11 29 HISTORY (20180630U) SD: ERR-ANALYS was updated. O1708 11 30 (20221216A) SD: SF5=PRE; SF6=AKE -> KE; SF7=FF -> LF+HFO1708 11 31 in REACTION (1). Col.DATA -> DATA-ERR for REACTION (2).O1708 11 32 ENDBIB 30 0 O1708 11 33 NOCOMMON 0 0 O1708 11 34 DATA 9 2 O1708 11 35 EN DATA 1DATA-ERR 1DATA 2DATA-ERR 2DATA 3O1708 11 36 DATA-ERR 3DATA 4DATA-ERR 4 O1708 11 37 MEV MEV MEV PRT/FIS PRT/FIS PRT/FIS O1708 11 38 PRT/FIS PRT/FIS PRT/FIS O1708 11 39 26.5 179.1 29.3 1.03 O1708 11 40 0.24 2.09 0.10 O1708 11 41 62.9 186.4 25.5 0.16 0.06 2.53 O1708 11 42 0.03 2.09 0.15 O1708 11 43 ENDDATA 8 0 O1708 11 44 ENDSUBENT 43 0 O1708 1199999 ENDENTRY 11 0 O170899999999