ENTRY 32208 20171228 31813220800000001 SUBENT 32208001 20171228 31813220800100001 BIB 13 43 3220800100002 TITLE Measurements of 52Cr effective total neutron cross 3220800100003 section at the energy 24 keV 3220800100004 AUTHOR (O.O.Gritzay, V.V.Kolotyi, A.I.Kaltchenko, P.M.Vorona, 3220800100005 M.L.Gnidak) 3220800100006 INSTITUTE (4UKRIJD) 3220800100007 REFERENCE (J,ZNJD,,(1/7),15,2002) 3220800100008 FACILITY (REAC,4UKRIJD) Reactor WWR-M 3220800100009 INC-SOURCE (REAC) Neutron filters installed in horizontal channel 3220800100010 of the reactor 3220800100011 INC-SPECT Filtered neutron spectrum with average energy 3220800100012 24.3+-0.8keV and flux density at the filter output 3220800100013 (2.28+-0.20)*10**5 neutron/cm2*s 3220800100014 METHOD (TRN,FNB) Transmission measurement of filtered neutrons3220800100015 Neutron filter composition: 3220800100016 Fe(236.1g/cm2), Al(115.02g/cm2),S(19.02g/cm), 3220800100017 B-10(1g/cm2); 3220800100018 DETECTOR (PROPC) Proportional hydrogen counter CHM-38 (the 3220800100019 counter is filled: 90% H2 + 9.56% CH4 + 0.44% He3, 3220800100020 pressure 3 atm.,voltage 2500V) 3220800100021 SAMPLE Metal powder of Cr (with isotope Cr-52 enrichment 3220800100022 99.3%) loaded into aluminum container with internal 3220800100023 diameter 31.75 mm, sample thickness 3220800100024 0.1208+-0.004 at/barn 3220800100025 ERR-ANALYS (ERR-T) Total error includes the following components: 3220800100026 (ERR-S) statistical error of the transmission 3220800100027 measurements - 0.35% 3220800100028 (ERR-1) measurement errors of dimension and weight of 3220800100029 the sample - 0.33% 3220800100030 (ERR-2) error due to presence of 50Cr - 0.1% 3220800100031 (ERR-3) error due to presence of 53Cr - 0.5% 3220800100032 (ERR-4) error due to presence of 54Cr - 0.1% 3220800100033 correction on the contribution of other chromium 3220800100034 isotopes(Cr-50(0.1%),Cr-53(0.5%),Cr-54(0.1%) to the 3220800100035 Cr-52 total cross section was fulfilled 3220800100036 STATUS (APRVD) Approved by author(Gritzay) 3220800100037 (TABLE) Abstract of the article 3220800100038 HISTORY (20010921C) LC 3220800100039 (20021018A) NDS 3220800100040 (20021202U) NK 3220800100041 (20100305A) SD: AUTHOR and TITLE letters were changed 3220800100042 on lower case, ref. was corrected. 3220800100043 (20141212A) VS. ERR-ANALYS updated. 3220800100044 (20171228U) On. REFERENCE corrected. 3220800100045 ENDBIB 43 0 3220800100046 NOCOMMON 0 0 3220800100047 ENDSUBENT 46 0 3220800199999 SUBENT 32208002 20141212 31673220800200001 BIB 2 9 3220800200002 REACTION (24-CR-52(N,TOT),,SIG) 3220800200003 ADD-RES (COMP) No resonance self-shielding factor was taken 3220800200004 into account. 3220800200005 Evaluated value of data (with self-shielding factor 3220800200006 taken into account) were calculated from different 3220800200007 ENDF/B libraries. 3220800200008 Possible value of Cr52 isotope total neutron 3220800200009 cross-section is in limits from 2.172 +- 0.012 to 3220800200010 2.493+-0.014 barns. 3220800200011 ENDBIB 9 0 3220800200012 NOCOMMON 0 0 3220800200013 DATA 9 1 3220800200014 EN EN-RSL DATA ERR-T ERR-S ERR-1 3220800200015 ERR-2 ERR-3 ERR-4 3220800200016 KEV KEV B B PER-CENT PER-CENT 3220800200017 PER-CENT PER-CENT PER-CENT 3220800200018 24.3 0.8 2.099 0.012 0.35 0.33 3220800200019 0.1 0.5 0.1 3220800200020 ENDDATA 6 0 3220800200021 ENDSUBENT 20 0 3220800299999 ENDENTRY 2 0 3220899999999