ENTRY M0772 20090512 M050M077200000001 SUBENT M0772001 20090512 M050M077200100001 BIB 12 34 M077200100002 TITLE Photofission of 235U and 238U at intermediate M077200100003 energies: absolute cross sections and fragment mass M077200100004 distributions. M077200100005 AUTHOR (TH.FROMMHOLD,F.STEIPER,W.HENKEL,U.KNEISSL, M077200100006 J.AHRENS,R.BECK,J.PEISE,M.SCHMITZ,I.ANTHONY, M077200100007 J.D.KELLIE,S.J.HALL,G.J.MILLER) M077200100008 REFERENCE (J,ZP/A,350,249,1994) M077200100009 INSTITUTE (2GERIFS,2GERMNZ,2UK GLS) M077200100010 FACILITY (MICRT,2GERMNZ) The 100 % duty cycle Mainz microtron M077200100011 MAMI. M077200100012 INC-SOURCE (MPH,TAGD) Glasgow Tagger photon facility. M077200100013 SAMPLE The fissile material (U3O8) was evaporated onto 200 M077200100014 microgram/cm**2 mylar foils, 7 x 10 cm**2 for 238U M077200100015 and a diameter of 6.5 cm for 235U. M077200100016 For the natural uranium target containing 0.72 % of M077200100017 235U a total target thickness of 238U was 264.7(43) M077200100018 microgram/cm**2. M077200100019 The 235U target enriched to about 93 % also M077200100020 containined other U-isotopes (mainly 238U (6.04 %)). M077200100021 The thickness of the target was measured to be M077200100022 154.4(62) microgram/cm**2, and a total thickness, M077200100023 after taking into account the impurities of other M077200100024 U-isotopes, of 166.3 (67) microgram/cm**2 was M077200100025 obtained. M077200100026 DETECTOR (D4PI,PPAC) 4pi-arrangement of 12 position sensitive M077200100027 double-grid avalanche counters (DGAC). M077200100028 METHOD Direct photofission reaction cross section M077200100029 measurement. M077200100030 ERR-ANALYS (ERR-S) Statistical errors. M077200100031 (ERR-SYS) The total relative systematic errors amount M077200100032 to 7.4 % for 238U and 8.0 % for the 235U. M077200100033 STATUS (CURVE) Data from Fig. 7 were compiled at the Russia M077200100034 MSU SINP CDFE by V.V.Varlamov. M077200100035 HISTORY (20090507C) M077200100036 ENDBIB 34 0 M077200100037 NOCOMMON 0 0 M077200100038 ENDSUBENT 37 0 M077200199999 SUBENT M0772002 20090512 M050M077200200001 BIB 1 1 M077200200002 REACTION (92-U-235(G,F),,SIG) M077200200003 ENDBIB 1 0 M077200200004 COMMON 1 3 M077200200005 ERR-SYS M077200200006 PER-CENT M077200200007 8. M077200200008 ENDCOMMON 3 0 M077200200009 DATA 3 44 M077200200010 EN DATA ERR-S M077200200011 MEV MB MB M077200200012 50. 19.11 1.48 M077200200013 68. 17.93 1.33 M077200200014 92. 15.53 1.63 M077200200015 104. 16.27 1.78 M077200200016 123. 16.43 1.92 M077200200017 142. 19.23 2.14 M077200200018 160. 24.5 2.5 M077200200019 180. 31. 2.81 M077200200020 203. 48.08 2.14 M077200200021 216. 55.47 1.4 M077200200022 236. 63.6 1.5 M077200200023 255. 76.11 1.85 M077200200024 277. 82.84 2.22 M077200200025 293. 90.24 1.7 M077200200026 312. 93.2 2.19 M077200200027 332. 95.36 2.21 M077200200028 350. 96.15 2.22 M077200200029 370. 93.98 2.2 M077200200030 389. 88.76 2.24 M077200200031 408. 82.84 2.37 M077200200032 424. 77.54 2.59 M077200200033 444. 73.28 2.44 M077200200034 461. 71.72 2.66 M077200200035 480. 66.57 2.37 M077200200036 500. 63.6 2.44 M077200200037 515. 59.82 2.66 M077200200038 533. 59.17 2.24 M077200200039 551. 59.07 2.38 M077200200040 570. 52.51 2.68 M077200200041 584. 51.68 2.24 M077200200042 600. 48.74 2.22 M077200200043 620. 48.1 2.53 M077200200044 633. 45.75 2.8 M077200200045 646. 47.33 2.83 M077200200046 658. 46. 2.88 M077200200047 677. 45.12 2.89 M077200200048 690. 42.16 2.74 M077200200049 704. 45.86 2.51 M077200200050 718. 42.1 2.74 M077200200051 732. 44.38 2.9 M077200200052 745. 41.83 2.95 M077200200053 760. 36.12 3. M077200200054 773. 46.61 3.25 M077200200055 784. 40. 3.25 M077200200056 ENDDATA 46 0 M077200200057 ENDSUBENT 56 0 M077200299999 SUBENT M0772003 20090512 M050M077200300001 BIB 1 1 M077200300002 REACTION (92-U-238(G,F),,SIG) M077200300003 ENDBIB 1 0 M077200300004 COMMON 1 3 M077200300005 ERR-SYS M077200300006 PER-CENT M077200300007 7.4 M077200300008 ENDCOMMON 3 0 M077200300009 DATA 3 44 M077200300010 EN DATA ERR-S M077200300011 MEV MB MB M077200300012 50. 17. .96 M077200300013 68. 17.1 1. M077200300014 92. 15.53 1.63 M077200300015 104. 16.27 1.78 M077200300016 123. 16.43 1.92 M077200300017 142. 21.31 1.48 M077200300018 160. 28.85 2. M077200300019 180. 33.31 2.59 M077200300020 203. 48.08 2.14 M077200300021 216. 53.78 1.04 M077200300022 236. 63.6 1.5 M077200300023 255. 76.11 1.85 M077200300024 277. 82.84 2.22 M077200300025 293. 91.72 2.4 M077200300026 312. 96.98 2.23 M077200300027 332. 99. 2.51 M077200300028 350. 101.3 2.24 M077200300029 370. 99.18 2.2 M077200300030 389. 93.1 2.25 M077200300031 408. 89.34 2.37 M077200300032 424. 84.32 2.22 M077200300033 444. 78.28 2.22 M077200300034 461. 72.49 2.36 M077200300035 480. 66.57 2.37 M077200300036 500. 63.6 2.44 M077200300037 515. 59.82 2.66 M077200300038 533. 59.17 2.24 M077200300039 551. 59.07 2.38 M077200300040 570. 58.43 2. M077200300041 584. 55.28 2.07 M077200300042 600. 51.78 1.98 M077200300043 620. 53.25 2.2 M077200300044 633. 54.78 2.22 M077200300045 646. 54.19 2.2 M077200300046 658. 53.25 2.08 M077200300047 677. 51.78 2.19 M077200300048 690. 45.76 2.34 M077200300049 704. 41.38 2.38 M077200300050 718. 45.75 2.05 M077200300051 732. 41.83 2.3 M077200300052 745. 42. 2.25 M077200300053 760. 41.41 2.3 M077200300054 773. 40.19 2. M077200300055 784. 43. 2.74 M077200300056 ENDDATA 46 0 M077200300057 ENDSUBENT 56 0 M077200399999 ENDENTRY 3 0 M077299999999