ENTRY 10841 20120618 13831084100000001 SUBENT 10841001 20120618 13831084100100001 BIB 12 39 1084100100002 INSTITUTE (1USAORL,3BZLIPE) 1084100100003 REFERENCE (J,BAP,23,526(BI3),197804) Abstract only, preliminary 1084100100004 data. 1084100100005 (T,RENNER,1978) Institute Atomic Energy, Sao Paulo, 1084100100006 Brazil (in Portuguese). Full details, final data. 1084100100007 AUTHOR (C.Renner,J.A.Harvey,N.W.Hill,G.L.Morgan,K.Rush) 1084100100008 TITLE The Li-6(n,alpha) cross section from 80-470 keV 1084100100009 FACILITY (LINAC,1USAORL) Oak Ridge electron linear accelerator. 1084100100010 DETECTOR (SCIN) 1-mm thick Li-6 glass scintillator with Li-6 1084100100011 content uncertainty less than 1% was used for alpha 1084100100012 particles, neutron flux was measured with 12.7-mm 1084100100013 Li-6 and 6.6-cm thick by 10-cm diameter NE-110 1084100100014 detector. 1084100100015 PART-DET (N,A) 1084100100016 METHOD (FLUX,TOF,PHD) Two series of measurements were 1084100100017 performed: with a flight path of 80 m (1) and with 1084100100018 the 30 m (2). Iron filters of 20 and 30 cm thick were 1084100100019 used. NE-110 scintillator spectra were used to 1084100100020 monitor neutron fluxes. 1084100100021 CORRECTION Corrected for multiple interactions in Li-6 detector 1084100100022 using Monte Carlo technique. 1084100100023 SAMPLE The 1-cm thick Li-6 scintillator was an active 1084100100024 target. 1084100100025 ANALYSIS The data analysis was based on the following 1084100100026 formula: sigma(E)=C(n,alpha)/(Na phi(E)), where E is 1084100100027 energy of incident neutron, C(n,alpha) is number of 1084100100028 reactions, Na is number of 6Li atoms and phi(E) is 1084100100029 the neutron flux. Measurements were performed at two 1084100100030 neutron flight paths of 80 and 30 m and the final 1084100100031 result was averaged. Monte Carlo techniques were used 1084100100032 to compute efficiency of neutron flux detectors using 1084100100033 the 05S code by R.E. Textor and V.V. Verbinski. 1084100100034 HISTORY (19790214C) 1084100100035 (20120618A) BP: Added thesis data for 30 and 80 m 1084100100036 flight paths and averaged numbers, revised the fist 1084100100037 and second subentry using the thesis data and 1084100100038 experiment description, converted to new date formats, 1084100100039 lower case, corrected according to last EXFOR rules 1084100100040 and Dict. 1084100100041 ENDBIB 39 0 1084100100042 NOCOMMON 0 0 1084100100043 ENDSUBENT 42 0 1084100199999 SUBENT 10841002 20120618 13831084100200001 BIB 4 8 1084100200002 REACTION (3-LI-6(N,T)2-HE-4,,SIG) 1084100200003 STATUS (SPSDD,10841003) Presentation at the APS meeting was 1084100200004 superseded by PhD thesis. 1084100200005 (TABLE) Text in Bull.Am.Phys.Soc.23(1978)526 1084100200006 ERR-ANALYS (DATA-ERR) No information given in the 1084100200007 J,BAP,23,526(BI3),197804. 1084100200008 HISTORY (19800117U) Reaction corrected 1084100200009 (20120628A) BP: Status was changed. 1084100200010 ENDBIB 8 0 1084100200011 NOCOMMON 0 0 1084100200012 DATA 3 3 1084100200013 EN DATA DATA-ERR 1084100200014 KEV B B 1084100200015 218.7 2.86 0.06 1084100200016 243.7 3.30 0.08 1084100200017 272.7 2.46 0.05 1084100200018 ENDDATA 5 0 1084100200019 ENDSUBENT 18 0 1084100299999 SUBENT 10841003 20120618 13831084100300001 BIB 5 10 1084100300002 REACTION 1(3-LI-6(N,T)2-HE-4,,SIG) 1084100300003 2(3-LI-6(N,T)2-HE-4,,SIG) 1084100300004 STATUS (TABLE) Cross sections from Table V-3.a, page 108 and 1084100300005 uncertainties from Table V.1-b, page 105 and 1084100300006 Table V.2-a, page 107 of the thesis 1084100300007 METHOD 1Flight path = 80 m 1084100300008 2Flight path = 30 m 1084100300009 ERR-ANALYS (ERR-T) Total error is based on statistical and 1084100300010 systematic errors. 1084100300011 HISTORY (20120628A) BP 1084100300012 ENDBIB 10 0 1084100300013 NOCOMMON 0 0 1084100300014 DATA 5 12 1084100300015 EN DATA 1ERR-T 1DATA 2ERR-T 2 1084100300016 KEV B PER-CENT B PER-CENT 1084100300017 81.6 0.6816 3.5 0.7003 4.0 1084100300018 127.5 0.7624 2.6 0.7432 3.0 1084100300019 136.7 0.8169 1.8 0.8087 1.7 1084100300020 167.4 1.1994 2.0 1.1688 2.0 1084100300021 183.5 1.4491 1.8 1.4879 1.6 1084100300022 218.7 2.8494 1.7 2.8595 1.4 1084100300023 243.7 3.2916 2.4 3.3018 2.1 1084100300024 272.7 2.4376 1.0 2.4751 0.8 1084100300025 311.1 1.3273 1.2 1.3811 0.9 1084100300026 352.0 0.8981 1.5 0.8502 1.2 1084100300027 375.1 0.6971 1.9 0.7200 1.5 1084100300028 466.5 0.4340 3.4 0.4206 2.2 1084100300029 ENDDATA 14 0 1084100300030 ENDSUBENT 29 0 1084100399999 SUBENT 10841004 20120618 13831084100400001 BIB 4 9 1084100400002 REACTION (3-LI-6(N,T)2-HE-4,,SIG) 1084100400003 STATUS (DEP,10841003) 1084100400004 (TABLE) Table V-3.a, page 108 of the thesis 1084100400005 This result is an average of two cross section 1084100400006 measurements at flight paths of 80 and 30 m and 1084100400007 essentially represents the final numbers. 1084100400008 ERR-ANALYS (ERR-T) Error analysis included statistical and 1084100400009 systematical errors at both distances. 1084100400010 HISTORY (20120628A) BP 1084100400011 ENDBIB 9 0 1084100400012 NOCOMMON 0 0 1084100400013 DATA 3 12 1084100400014 EN DATA ERR-T 1084100400015 KEV B PER-CENT 1084100400016 81.6 0.691 3.5 1084100400017 127.5 0.753 2.8 1084100400018 136.7 0.813 2.2 1084100400019 167.4 1.184 2.4 1084100400020 183.5 1.469 2.2 1084100400021 218.7 2.855 2.2 1084100400022 243.7 3.297 2.5 1084100400023 272.7 2.456 2.0 1084100400024 311.1 1.354 2.3 1084100400025 352.0 0.874 2.4 1084100400026 375.1 0.709 2.5 1084100400027 466.5 0.427 3.0 1084100400028 ENDDATA 14 0 1084100400029 ENDSUBENT 28 0 1084100499999 ENDENTRY 4 0 1084199999999