ENTRY 41491 20150225 41684149100000001 SUBENT 41491001 20150225 41684149100100001 BIB 11 35 4149100100002 TITLE A Setup with a Mechanical Chopper for Monochromating 4149100100003 Neutrons and Shortening a Neutron Flux from a Pulsed 4149100100004 Neutron Source 4149100100005 AUTHOR (Zh.V.Mezentseva, A.P.Sirotin, Yu.V.Grigoriev, 4149100100006 H.Faikov-Stanczyk) 4149100100007 INSTITUTE (4ZZZDUB) Zh.V.Mezentseva, A.P.Sirotin 4149100100008 (4RUSFEI) Yu.Grigoriev 4149100100009 (3POLLOU) H.Faikov-Stanczyk 4149100100010 REFERENCE (J,PTE,,(5),27,2006) Main Reference 4149100100011 (J,IET,49,(5),617,2006) English translation of J,PTE 4149100100012 #doi:10.1134/S0020441206050022 4149100100013 FACILITY (REAC,4ZZZDUB) Reactor IBR-2. 4149100100014 Spectrometric setup consist of two rotor-type 4149100100015 mechanical neutron choppers with dc motors, 4149100100016 an electronic system for stabilizing the rotation of 4149100100017 rotors and phasing the moment of opening slits along 4149100100018 a neutron beam with a neutron pulse,collimators, and 4149100100019 neutron detectors. 4149100100020 The angular rotational velocity of rotors changes from4149100100021 0 to 6000 rpm, their synchronization with the neutron 4149100100022 pulse is provided with accuracy of 10 microsec at 4149100100023 minimum time of opening slits along the neutron beam 4149100100024 of 20 microsec. 4149100100025 INC-SOURCE (REAC) IBR-2 Reactor. Neutron beam collimated by mirror4149100100026 neutron guide. 4149100100027 METHOD (TOF) Time-Of-Flight, Flight path 32.6m 4149100100028 DETECTOR (PROPC) SNM-18 counter placed at 1.6m distance from 4149100100029 chopper. 4149100100030 SAMPLE Metallic sample of natural tungsten of thickness 4149100100031 0.00184 atom/b. 4149100100032 ERR-ANALYS (DATA-ERR) Errors are not specified. 4149100100033 HISTORY (20070302C) Compiled at CJD. M.M. 4149100100034 (20150225A) Minor correction of free text. 4149100100035 Code TABLE was added. 4149100100036 Transmission data were moved in Subent 003. 4149100100037 ENDBIB 35 0 4149100100038 NOCOMMON 0 0 4149100100039 ENDSUBENT 38 0 4149100199999 SUBENT 41491002 20150225 41684149100200001 BIB 3 7 4149100200002 REACTION (74-W-0(N,TOT),,SIG) Total cross-section 4149100200003 STATUS (APRVD) Text, p.33 of J,PTE,,(5),27,2006 . 4149100200004 (TABLE) 4149100200005 COMMENT There are several misprints in the text of article, 4149100200006 page 33. The energy units are "meV", but not "MeV". 4149100200007 It was confirmed by the author - Zh.Mezentseva 4149100200008 (22.03.2007). 4149100200009 ENDBIB 7 0 4149100200010 NOCOMMON 0 0 4149100200011 DATA 4 1 4149100200012 EN EN-RSL DATA DATA-ERR 4149100200013 EV PER-CENT B B 4149100200014 1.25E-03 0.26 94.1 1.0 4149100200015 ENDDATA 3 0 4149100200016 ENDSUBENT 15 0 4149100299999 SUBENT 41491003 20150225 41684149100300001 BIB 3 7 4149100300002 REACTION (74-W-0(N,TOT),,TRN) Total transmission 4149100300003 STATUS (APRVD) Text, p.33 of J,PTE,,(5),27,2006 . 4149100300004 (TABLE) 4149100300005 COMMENT There are several misprints in the text of article, 4149100300006 page 33. The energy units are "meV", but not "MeV". 4149100300007 It was confirmed by the author - Zh.Mezentseva 4149100300008 (22.03.2007). 4149100300009 ENDBIB 7 0 4149100300010 NOCOMMON 0 0 4149100300011 DATA 5 1 4149100300012 EN EN-RSL THICKNESS DATA DATA-ERR 4149100300013 EV PER-CENT ATOMS/B NO-DIM NO-DIM 4149100300014 1.25E-03 0.26 0.00184 0.842 0.008 4149100300015 ENDDATA 3 0 4149100300016 ENDSUBENT 15 0 4149100399999 ENDENTRY 3 0 4149199999999