ENTRY O1012 20200829 O079O101200000001 SUBENT O1012001 20200829 O079O101200100001 BIB 12 47 O101200100002 TITLE Low-energy fission investigated in reactions of 750*A O101200100003 MeV U-238 ions with Pb and Be targets O101200100004 AUTHOR (P.Armbruster, M.Bernas, S.Czajkowski, H.Geissel, O101200100005 T.Aumann, Ph.Dessagne, C.Donzaud, E.Hanelt, A.Heinz, O101200100006 M.Hesse, C.Kozhuharov, Ch.Miehe, G.Muenzenberg, O101200100007 M.Pfuetzner, K.-H.Schmidt, W.Schwab, C.Stephan, O101200100008 K.Suemmerer, L.Tassan-Got, B.Voss) O101200100009 INSTITUTE (2GERGSI) O101200100010 (2FR PAR) IPN Orsay, IN2P3,CNRS. O101200100011 (2FR STR) CRN Strasbourg, IN2P3,CNRS. O101200100012 (2GERTUE) Institute of Physics O101200100013 (2GERTHD) Institute of Nuclear Physics O101200100014 (2GERMNZ) Institute of Nuclear Chemistry O101200100015 (3POLWWA) O101200100016 REFERENCE (J,ZP/A,355,191,1996) O101200100017 FACILITY (SYNCH,2GERGSI) Heavy-ion synchrotron. O101200100018 REL-REF (M,O0955001,M.Hesse+,J,ZP/A,355,69,1996) Details of O101200100019 experiment. O101200100020 SAMPLE Lead target (1.26 g/cm**2) and beryllium O101200100021 target (1.01 g/cm**2) O101200100022 DETECTOR (IOCH) 4-stage multiple-sampling ionization chambers O101200100023 MUSIC. O101200100024 (SCIN) Two 5-mm thick plastic scintillation detectors O101200100025 located in the intermediate and final focal planes. O101200100026 Horizontal slit in order to let the beam through. O101200100027 METHOD (TOF) O101200100028 (BCINT) Ion current was monitored by a secondary O101200100029 electron detector. O101200100030 (EXTB) 2.E+5 uranium/second O101200100031 ADD-RES (COMP) Glauber-type calculations. O101200100032 COMMENT - By authors. In fission, the two fragments are emittedO101200100033 back to back with equal momenta in any direction in theO101200100034 C.-M. System. This momentum distribution is converted O101200100035 in the laboratory system into a narrow cone centered inO101200100036 the beam direction. Only fragments emitted forward and O101200100037 backward in the C.-M. System can pass the fragment O101200100038 separator, and those emitted in directions O101200100039 perpendicular to the beam direction cannot be O101200100040 observed. Low energy fission is separable by delta-E O101200100041 measurements, by detecting one of the fragments only inO101200100042 the restricted phase space of forward emitted fragmentsO101200100043 at the largest momenta. O101200100044 HISTORY (20021105C) O101200100045 (20021228U) Last checking has been done. O101200100046 (20200829A) SD: Corrections in all Subents. O101200100047 PART-DET deleted. STATUS moved to Subents 002-004. O101200100048 Energy units changed (GEV -> MEV/A). O101200100049 ENDBIB 47 0 O101200100050 COMMON 1 3 O101200100051 EN O101200100052 MEV/A O101200100053 750. O101200100054 ENDCOMMON 3 0 O101200100055 ENDSUBENT 54 0 O101200199999 SUBENT O1012002 20200829 O079O101200200001 BIB 4 6 O101200200002 REACTION (82-PB-208(92-U-238,F)ELEM,CHG,FY) O101200200003 COMMENT -By authors. The yields are normalized on light O101200200004 fragments only. O101200200005 STATUS (TABLE) Tbl.2 from Zeitsch.Phys.,A355(1996)191 O101200200006 HISTORY (20200829A) SD: SF5=IND -> CHG in REACTION code. O101200200007 STATUS added. O101200200008 ENDBIB 6 0 O101200200009 NOCOMMON 0 0 O101200200010 DATA 2 19 O101200200011 ELEMENT DATA O101200200012 NO-DIM PRT/FIS O101200200013 28. 0.0003 O101200200014 29. 0.0011 O101200200015 30. 0.0036 O101200200016 31. 0.0061 O101200200017 32. 0.0153 O101200200018 33. 0.0247 O101200200019 34. 0.0516 O101200200020 35. 0.0686 O101200200021 36. 0.1126 O101200200022 37. 0.1107 O101200200023 38. 0.1343 O101200200024 39. 0.1221 O101200200025 40. 0.1289 O101200200026 41. 0.0813 O101200200027 42. 0.0537 O101200200028 43. 0.0296 O101200200029 44. 0.0247 O101200200030 45. 0.0213 O101200200031 46. 0.0206 O101200200032 ENDDATA 21 0 O101200200033 ENDSUBENT 32 0 O101200299999 SUBENT O1012003 20200829 O079O101200300001 BIB 5 9 O101200300002 REACTION (82-PB-208(92-U-238,F),,SIG) O101200300003 Low energy fission cross section is presented. O101200300004 MISC-COL (MISC1) The fission by electromagnetic dissociation. O101200300005 (MISC1-ERR). 'Misc1' uncertainty. O101200300006 (MISC2) The fission by nuclear interaction. O101200300007 (MISC2-ERR). 'Misc2' uncertainty. O101200300008 ERR-ANALYS (DATA-ERR) No information about source of uncertainty O101200300009 STATUS (TABLE) Tbl.3 from Zeitsch.Phys.,A355(1996)191 O101200300010 HISTORY (20200829U) SD: STATUS added. ERR-T -> DATA-ERR. O101200300011 ENDBIB 9 0 O101200300012 NOCOMMON 0 0 O101200300013 DATA 6 1 O101200300014 DATA DATA-ERR MISC1 MISC1-ERR MISC2 MISC2-ERR O101200300015 B B B B B B O101200300016 2.10 0.2 1.84 0.2 0.26 0.09O101200300017 ENDDATA 3 0 O101200300018 ENDSUBENT 17 0 O101200399999 SUBENT O1012004 20200829 O079O101200400001 BIB 4 6 O101200400002 REACTION (4-BE-9(92-U-238,F)ELEM,CHG,FY) O101200400003 COMMENT -By authors. The yields are normalized on light O101200400004 fragment only. O101200400005 STATUS (TABLE) Tbl.2 from Zeitsch.Phys.,A355(1996)191 O101200400006 HISTORY (20200829A) SD: SF5=IND -> CHG in REACTION code. O101200400007 STATUS added. O101200400008 ENDBIB 6 0 O101200400009 NOCOMMON 0 0 O101200400010 DATA 2 19 O101200400011 ELEMENT DATA O101200400012 NO-DIM PRT/FIS O101200400013 28. 0.0016 O101200400014 29. 0.0046 O101200400015 30. 0.0088 O101200400016 31. 0.0146 O101200400017 32. 0.025 O101200400018 33. 0.0351 O101200400019 34. 0.0533 O101200400020 35. 0.0644 O101200400021 36. 0.0845 O101200400022 37. 0.0905 O101200400023 38. 0.095 O101200400024 39. 0.094 O101200400025 40. 0.0955 O101200400026 41. 0.0803 O101200400027 42. 0.0717 O101200400028 43. 0.0637 O101200400029 44. 0.0524 O101200400030 45. 0.044 O101200400031 46. 0.0422 O101200400032 ENDDATA 21 0 O101200400033 ENDSUBENT 32 0 O101200499999 SUBENT O1012005 20200829 O079O101200500001 BIB 5 9 O101200500002 REACTION (4-BE-9(92-U-238,F),,SIG) O101200500003 Low energy fission is presented only. O101200500004 COMMENT - By author. The low-energy fission process observed inO101200500005 this experiment for the U/Be-system is induced by a O101200500006 soft nuclear reaction in which one or two nucleons are O101200500007 removed. Electromagnetic dissociation is negligible. O101200500008 ERR-ANALYS (DATA-ERR) No information about source of uncertainty O101200500009 STATUS (TABLE) Tbl.3 from Zeitsch.Phys.,A355(1996)191 O101200500010 HISTORY (20200829U) SD: STATUS added. ERR-T -> DATA-ERR. O101200500011 ENDBIB 9 0 O101200500012 NOCOMMON 0 0 O101200500013 DATA 2 1 O101200500014 DATA DATA-ERR O101200500015 B B O101200500016 0.115 0.04 O101200500017 ENDDATA 3 0 O101200500018 ENDSUBENT 17 0 O101200599999 ENDENTRY 5 0 O101299999999