ENTRY 40705 20110812 4070500000001
SUBENT 40705001 20110812 20111005 4070500100001
BIB 13 40 4070500100002
TITLE Measurement and analysis of the neutron emission 4070500100003
spectrum arising at the 14 MeV neutron bombardment 4070500100004
of niobium 4070500100005
AUTHOR (A.A.Lychagin,V.A.Vinogradov,O.T.Grudzevich,B.V.Devkin,4070500100006
G.V.Kotel'Nikova,V.I.Plyaskin,O.A.Sal'nikov) 4070500100007
INSTITUTE (4RUSFEI) 4070500100008
REFERENCE (R,FEI-1385,1983) Cross-section curves are given 4070500100009
REL-REF (M,,A.A.Lychagin+,R,FEI-923,26,1979) 4070500100010
Method of detector efficiency measurement. 4070500100011
Spectrometer details are in : 4070500100012
(I,,V.B.Anufrienko+,J,VAT/R,1977,(5/19),34,1977) 4070500100013
V.B.Anufrienko+, Universal spectrometer of fast 4070500100014
neutrons by time of flight, Voprosy Atomnoy Nauki i 4070500100015
Tekhniki,ser. Reactorostroenie,iss.(5/19),page 34,1977.4070500100016
METHOD (TOF) Flight bases are 2.4m and 7.m, resolution 1.3 4070500100017
and .65 nsec/m . 4070500100018
DETECTOR (STANK) Liquid scintillator NE-218 and photomultiplier 4070500100019
XP-2041 4070500100020
Neutron registration threshold 100 keV and 0.5 Mev for 4070500100021
2.4 m and 7 m, respectively. 4070500100022
Detector efficiency was defined by Cf-252 spectrum 4070500100023
measurement as described in REL-REF of A.A.Lychagin+. 4070500100024
(SCIN) Stilbene crystal of 30 mm diameter, 20mm 4070500100025
thickness, with FEU-30 -for neutron flux monitoring . 4070500100026
(LONGC) For neutron flux monitoring 4070500100027
INC-SOURCE (D-T) 4070500100028
FACILITY (ACCEL,4RUSFEI) 4070500100029
SAMPLE Cylindrical samples height 45 mm and diameters 45 4070500100030
and 35 mm 4070500100031
ANALYSIS Neutron spectrum analysis on the basis of the statis- 4070500100032
tical theory of nuclear reactions and Hauser-Feshbach 4070500100033
formalism. 4070500100034
HISTORY (19840411C) Compiled at the CJD 4070500100035
(19861211A) Secondary neutron spectrum data are trans- 4070500100036
ferred into ENTRY 40851 4070500100037
(20110812A) M.M. COREL was added. 4070500100038
Reference J,YK,1977,(5/19),34,1977 was deleted as wrong4070500100039
coded - right ref. is given in REL-REF as free text. 4070500100040
CORRECTION Corrections were made on multiple scattering and 4070500100041
neutron flux attenuation by Monte Carlo method. 4070500100042
ENDBIB 40 0 4070500100043
NOCOMMON 0 0 4070500100044
ENDSUBENT 43 0 4070500199999
SUBENT 40705002 20110812 20111005 4070500200001
BIB 3 10 4070500200002
REACTION (41-NB-93(N,2N)41-NB-92,,SIG) 4070500200003
ANALYSIS (INTED) CS extracted from the second-neutrons spectrum,4070500200004
which was obtained by subtraction of calculated on the 4070500200005
base of theoretical models (parameters for analysis 4070500200006
were found by using exp. data) spectrum of first 4070500200007
neutrons from the measured neutron emission spectrum. 4070500200008
of other authors. 4070500200009
STATUS (TABLE) Text, pages 11, 13 of R,FEI-1385,1983. 4070500200010
(PRELM) Preliminary datum 4070500200011
(COREL,40851003) Different analysis. 4070500200012
ENDBIB 10 0 4070500200013
NOCOMMON 0 0 4070500200014
DATA 3 1 4070500200015
EN DATA DATA-ERR 4070500200016
MEV MB MB 4070500200017
14.3 1370. 110. 4070500200018
ENDDATA 3 0 4070500200019
ENDSUBENT 18 0 4070500299999
NOSUBENT 40705003 861211 4070500300001
ENDENTRY 3 0 4070599999999