ENTRY L0139 20110831 L016L013900000001 SUBENT L0139001 20110831 L016L013900100001 BIB 9 29 L013900100002 TITLE Nuclear resonance fluorescence excitations near 2 L013900100003 MeV in 235U and 239Pu L013900100004 AUTHOR (W.Bertozzi,J.A.Caggiano,W.K.Hensley,M.S.Johnson, L013900100005 S.E.Korbly, R.J.Ledoux,D.P.Mcnabb,E.B.Norman, L013900100006 W.H.Park,G.A.Warren) L013900100007 INSTITUTE (1USABNW,1USALRL) L013900100008 (1USAUSA) Passport Systems Incorporated,Acton,MA,USA L013900100009 REFERENCE (J,PR/C,78,041601,2008) L013900100010 FACILITY (VDG,1USAMIT) Experiment performed at the 4 MeV Van L013900100011 de Graaff electron accelerator at the High Voltage L013900100012 Research Laboratory at the Massachusetts Institute L013900100013 of Technology. Bremsstrahlung photons were produced by L013900100014 impinging an electron beam onto a radiator consisting L013900100015 of 102-mum Au backed by 1-cm Cu L013900100016 DETECTOR (HPGE) Scattered gamma rays were measured with two L013900100017 HPGe detectors at 40 to 50 cm from the target and L013900100018 +/- 120 deg with respect to the beam direction. Both L013900100019 detectors were encased in thick Pb shielding to L013900100020 reduce background and collimated to view only the L013900100021 NRF target L013900100022 ERR-ANALYS (DATA-ERR) No information given L013900100023 INC-SOURCE (BRST) Bremsstrahlung photons were produced by L013900100024 electron beam impinging onto a radiator consisting L013900100025 of 102 mum Au backed by 1-cm Cu (used for cooling and L013900100026 electron cleanup).The bremsstrahlung photons L013900100027 immediately pass through a 20-cm long lead collimator L013900100028 with a 2.5 deg half angle conical opening. L013900100029 HISTORY (20090106C) Compiled by S.H. L013900100030 (20110727A) OS. Monitor coding in Sub.2,3 corrected L013900100031 ENDBIB 29 0 L013900100032 COMMON 1 3 L013900100033 EN-RES-MAX L013900100034 MEV L013900100035 2.5 L013900100036 ENDCOMMON 3 0 L013900100037 ENDSUBENT 36 0 L013900199999 SUBENT L0139002 20110831 L016L013900200001 BIB 4 7 L013900200002 REACTION (92-U-235(G,SCT),PAR,ARE) L013900200003 SAMPLE 235U sample with weight of 220 g enriched to 93% 235U L013900200004 placed inside a polyethylene terephtalate container L013900200005 MONITOR (25-MN-55(G,SCT),PAR,ARE) 1884 keV line L013900200006 used as reference to normalize 235U cross sections L013900200007 STATUS (TABLE) data taken from tab. 1 of the reference L013900200008 (DEP,L0139004) Monitor cross section integral given L013900200009 ENDBIB 7 0 L013900200010 COMMON 3 3 L013900200011 E-NRM MONIT MONIT-ERR L013900200012 KEV B*EV B*EV L013900200013 1884. 45.0 3.7 L013900200014 ENDCOMMON 3 0 L013900200015 DATA 4 9 L013900200016 E E-ERR DATA DATA-ERR L013900200017 KEV KEV B*EV B*EV L013900200018 1656.23 0.80 4.1 0.13 L013900200019 1687.26 0.33 6.1 0.11 L013900200020 1733.60 0.22 29.8 0.39 L013900200021 1769.16 0.28 4.4 0.10 L013900200022 1815.31 0.22 9.7 0.17 L013900200023 1827.54 0.23 6.7 0.12 L013900200024 1862.31 0.20 9.6 0.17 L013900200025 2003.32 0.25 9.7 0.17 L013900200026 2006.19 0.31 4.7 0.16 L013900200027 ENDDATA 11 0 L013900200028 ENDSUBENT 27 0 L013900299999 SUBENT L0139003 20110831 L016L013900300001 BIB 4 9 L013900300002 REACTION (94-PU-239(G,SCT),PAR,ARE) L013900300003 SAMPLE (94-PU-239,ENR=0.93) L013900300004 Pu target containing approx. 4 g of 93% 239Pu L013900300005 with diameter of 1.5 cm and thickness of 1.5mm L013900300006 encapsulated in 25 g of Nitronic-40 with a L013900300007 1-mil stainless steel window. L013900300008 MONITOR (13-AL-27(G,SCT),PAR,ARE) 2211 keV line L013900300009 used as reference to normalize 239Pu cross sections L013900300010 STATUS (TABLE) data taken from tab. 1 of the reference L013900300011 ENDBIB 9 0 L013900300012 COMMON 1 3 L013900300013 E-NRM L013900300014 KEV L013900300015 2211. L013900300016 ENDCOMMON 3 0 L013900300017 DATA 4 12 L013900300018 E E-ERR DATA DATA-ERR L013900300019 KEV KEV B*EV B*EV L013900300020 2040.25 0.21 8.0 0.2 L013900300021 2046.89 0.31 5.0 0.2 L013900300022 2135.00 0.37 4.0 0.2 L013900300023 2143.56 0.13 13.0 0.2 L013900300024 2150.98 0.31 5.0 0.2 L013900300025 2289.02 0.25 8.0 0.2 L013900300026 2423.48 0.22 10.0 0.2 L013900300027 2431.66 0.25 9.0 0.3 L013900300028 2454.37 0.26 9.0 0.3 L013900300029 2460.46 0.37 6.0 0.4 L013900300030 2464.60 0.30 8.0 0.4 L013900300031 2471.07 0.34 4.6 0.2 L013900300032 ENDDATA 14 0 L013900300033 ENDSUBENT 32 0 L013900399999 SUBENT L0139004 20090106 L015L013900400001 BIB 3 4 L013900400002 REACTION (25-MN-55(G,SCT),PAR,ARE) L013900400003 MONITOR (13-AL-27(G,SCT),PAR,ARE) 2211 keV line L013900400004 used as reference to normalize 55Mn cross section L013900400005 STATUS (TABLE) data taken from text p. 4 of the reference L013900400006 ENDBIB 4 0 L013900400007 COMMON 1 3 L013900400008 E-NRM L013900400009 KEV L013900400010 2211. L013900400011 ENDCOMMON 3 0 L013900400012 DATA 3 1 L013900400013 E DATA DATA-ERR L013900400014 KEV B*EV B*EV L013900400015 1884.0 45.0 3.7 L013900400016 ENDDATA 3 0 L013900400017 ENDSUBENT 16 0 L013900499999 ENDENTRY 4 0 L013999999999