LA-UR-02-5485 Approved for public release; distribution is unlimited. Title: Author(s): DANCE: A 4π BARRIUM FLUORIDE DETECTOR FOR MEASURING NEUTRON CAPTURE ON UNSTABLE NUCLEI J.L. Ullmann, R. C. Haight, L. Hunt, R. Reifarth, R. S. Rundberg, T. A. Bredeweg, M.M. Fowler, G. G. Miller, J. B. Wilhelmy, D. D. Strottman, H. Heil, F. Kappeler and E. P. Chamberlin Submitted to: http://lib-www.lanl.gov/cgi-bin/getfile?00852059.pdf Los Alamos National Laboratory, an affirmative action/equal opportunity employer, is operated by the University of California for the U.S. Department of Energy under contract W-7405-ENG-36. By acceptance of this article, the publisher recognizes that the U.S. Government retains a nonexclusive, royaltyfree license to publish or reproduce the published form of this contribution, or to allow others to do so, for U.S. Government purposes. Los Alamos National Laboratory requests that the publisher identify this article as work performed under the auspices of the U.S. Department of Energy. Los Alamos National Laboratory strongly supports academic freedom and a researcher's right to publish; as an institution, however, the Laboratory does not endorse the viewpoint of a publication or guarantee its technical correctness. FORM 836 (10/96) !" # " $% &'( '()* # " +" , " " !"# $ % & ' "# ( & ( )) Æ ! " ! ) # $ % "&' "&' ( ) * + * ! ' " $ $ ,, * ! - " Æ . * / 0 # 1 2 " * 3"#4 5 6 7 28 7 # $ 2"#$4 5 6 , , * 9 : 9 6 ; < * , , !. <! ! " % 0 * 28 = * 6>' * ' 9 " ! > 5 ; $ <! 5 ? * * & 9 * @@@ * * < * < ! A < A ) '6 ? 3 ' " * <! 5 6 % + 5 B #! '@C A D 2 6C A 25 " $ 2E F * <! 5 * % < % * <! * * B 2 0 & "A4 4 " & ! #A AAA " '6 " ' <! G & E9> ! #A AAFA4 !"# "" $% "& 3 ' > 8 C " " 2 '9C> D 2 *3 A * " D + . $ + . $ + ! +, - " .. & E' F * * * . 5 ' < $ * >? $ 9? $ >? $ C? $ ? $ * 6 @@ $ # * * . < &' * Æ 8 ; * * ¯ ¯ 0 ¯ $ E 9> . Sum Ge0AT sum-px Nent = 141343 Mean = 5724 RMS = 5046 1000 800 600 400 200 0 0 2000 4000 6000 8000 10000 12000 14000 16000 + ) & !/ 0 & & $ & 1 AF 4! 14"#*9 ) ;5 EC F 0 % = * 6 + * B C' 6 % + * > >96 ''H 4 4 * HH' > + . =*C ! D * $ 5 I #! @ 2B 6'? B C 2B 5 , , * 4 ;5 * + "+ 3'C @ . * . B. 4 . % * @? C9 * ? C * . 5 9 + "+ 3'> 1B. . 5 6 >H * 99' ? Digitizer Waveform wave Entries 0 Mean 508.1 RMS 579.6 100 80 60 40 20 0 -500 0 500 1000 1500 2000 Channel + * & $ 2 '"3) 456 6 7 & 6 ( !!"# " "& * 3"#4 " " 'H CH ! 3 Fast + Slow sum Entries 929807 Mean 2.179e+04 RMS 7966 1600 1400 1200 1000 800 600 400 200 0 0 10000 20000 30000 40000 50000 + " $ 456 6 & '' " 0 # $ 4 022 '' 6 4 * 0 ! 3"#4 '' $ )& !" # $%&! $! - " . ''( "- $)*% +,,-. ( /, 0 ((% $ $ $ 1,#1-2 +,,,. 2 * &* $!3* &)$*! ))(455%!%!%6*7 1 %% ) % $! -" $ / $"- " 0" 1$$02 *%" ) % "- * %" $!)$8 $!6(* (( ,# 1+0999. / &! ( $7) *&&!$)$*! : $% ) % 3 " 00,#01: 099. $% ) % * %&* )$*!% ;* )* < (* ) ##,,#191: +,,,. = $3 ) ) % * %&* )$*!% ;* )* < (* ) ##9#1-/ +099. - ; )(! !" $&*!" > ! ?%< ;* )* < (* ) #-,1/ +,=,.
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