ENTRY 40774 20200515 418740774 0 1 SUBENT 40774001 20200515 418740774 1 1 BIB 9 22 40774 1 2 INSTITUTE (4RUSLEB) 40774 1 3 REFERENCE (J,AE/S,,(5),75,1957) 40774 1 4 (J,SJA/S,,(5),56,1957) 40774 1 5 AUTHOR (A.V.Elpidinskii,F.L.Shapiro,I.V.Shtranikh) 40774 1 6 TITLE Measurement of the effective cross section for the 40774 1 7 Li6(n,alpha) reaction for 2.5-MeV neutrons. 40774 1 8 FACILITY (ACCEL,4RUSLEB) Cascade generator 40774 1 9 EXP-YEAR (1953) 40774 1 10 INC-SOURCE (D-D) Heavy ice target were bombarded by D2+ ions of 40774 1 11 370 keV energy. 40774 1 12 DETECTOR (IOCH) Ionization chamber filled with Ar with 40774 1 13 0.03-0.1 % oxygen and 0.2-0.3 % nitrogen. 40774 1 14 19-channel pulse-height analyzer. 40774 1 15 Cd sheets of 0.5 mm thickness to protect from thermal 40774 1 16 neutrons. 40774 1 17 HISTORY (19840622T) Converted from ENTRY 80111 40774 1 18 (20010319A) Date is corrected 40774 1 19 (20191101A) M.M. Upper -> lower case correction. 40774 1 20 Subent 003 was added. 40774 1 21 Refs. were corrected. 40774 1 22 BIB information was updated 40774 1 23 (20200515U) History line was inserted in Subent 003. 40774 1 24 ENDBIB 22 0 40774 1 25 NOCOMMON 0 0 40774 1 26 ENDSUBENT 25 0 40774 199999 SUBENT 40774002 20191101 418440774 2 1 BIB 8 32 40774 2 2 REACTION (3-LI-6(N,T)2-HE-4,,SIG) 40774 2 3 SAMPLE Li6F layers of 0.12-0.32 mg/cm2 thickness (+-5%) were 40774 2 4 deposited by vacuum evaporation on Au foil of 40774 2 5 0.2 mg/cm2 thickness . The sample shape - square of 40774 2 6 6.5 x 6.5 cm with rounded corners. 40774 2 7 ANALYSIS Mean value of 12 measurements. 40774 2 8 CORRECTION For the gaps between analyzer channels, 40774 2 9 for particle absorption in the layer, 40774 2 10 for backgrounds of neutrons from d-d reaction. 40774 2 11 Degradation of the beam by the front wall and the 40774 2 12 electrodes of the chamber ( 1-7 %) are compensated by 40774 2 13 neutron scattering in the sample, hence the correction 40774 2 14 for scattering was not introduced. 40774 2 15 ERR-ANALYS (ERR-S) Statistical - 2.% 40774 2 16 (ERR-1) Error in resolution of the background of 40774 2 17 neutrons of other energies - 7.% 40774 2 18 (ERR-2) Error in the measurement of the distance 40774 2 19 target - sample - 5.% 40774 2 20 (ERR-3) Error in measurement of neutron flux - 3.% 40774 2 21 (ERR-4) Error in corrections - 5.% 40774 2 22 (ERR-T) Total error 11.% 40774 2 23 REL-REF (A,,F.L.Ribe,J,PR,87,205(L5),1952) and 40774 2 24 (A,,F.L.Ribe,J,PR,103,741,1956) 40774 2 25 188+-25 mb 40774 2 26 (A,,K.D.Tolstov+,W,TOLSTOV,1953) 40774 2 27 210+-30 mb for En=2.2+-0.1 MeV 40774 2 28 STATUS (TABLE) Text of abstract and text on page 63 of 40774 2 29 SJA/S,,(5),56,1957 40774 2 30 HISTORY (20191101A) EN-RSL=7.% was removed (not found in the 40774 2 31 article) . 40774 2 32 SAMPLE,ANALYSIS,CORRECTION,ERR-ANALYS,REL-REF were 40774 2 33 added . 40774 2 34 ENDBIB 32 0 40774 2 35 COMMON 4 3 40774 2 36 ERR-1 ERR-2 ERR-3 ERR-4 40774 2 37 PER-CENT PER-CENT PER-CENT PER-CENT 40774 2 38 7. 5. 3. 4. 40774 2 39 ENDCOMMON 3 0 40774 2 40 DATA 4 1 40774 2 41 EN DATA ERR-T ERR-S 40774 2 42 MEV MB MB PER-CENT 40774 2 43 2.5 170. 20. 2. 40774 2 44 ENDDATA 3 0 40774 2 45 ENDSUBENT 44 0 40774 299999 SUBENT 40774003 20200515 418740774 3 1 BIB 6 8 40774 3 2 REACTION (18-AR-36(N,A)16-S-33,,SIG) 40774 3 3 SAMPLE Gas in the ionization chamber. 40774 3 4 REL-REF (A,11561002,B.J.Toppel+,J,PR,91,473(PA8),1953) 40774 3 5 ERR-ANALYS (DATA-ERR) Type on uncertainty is not explained in the 40774 3 6 article 40774 3 7 STATUS (TABLE) Text, page 60 of 40774 3 8 Sov.J.Atom.Energ.Suppl.5,p.56,1957 40774 3 9 HISTORY (20191101C) Subent was added. 40774 3 10 ENDBIB 8 0 40774 3 11 NOCOMMON 0 0 40774 3 12 DATA 3 1 40774 3 13 EN DATA DATA-ERR 40774 3 14 MEV MB PER-CENT 40774 3 15 2.5 46. 30. 40774 3 16 ENDDATA 3 0 40774 3 17 ENDSUBENT 16 0 40774 399999 ENDENTRY 3 0 4077499999999